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LIGHT MODULATION COMBINING POCKELS EFFECT WITH FARADAY EFFECT AND ITS FUNCTIONS
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作者 陈纪东 乔松 《Journal of China University of Mining and Technology》 1996年第2期104-113,共10页
With brief statements of the linear electro-optical modulation and magnetooptical modulation, using the method of resultant of optical amplitude vectors and the methed of Jones matrix, formulas for intensity of transm... With brief statements of the linear electro-optical modulation and magnetooptical modulation, using the method of resultant of optical amplitude vectors and the methed of Jones matrix, formulas for intensity of transmitted light through the optical analyzer of various composition of electro-optical effect with magneto-optical effect are derived. The results show that the output beam from the analyzer carries information on current (or magnetic field), voltage (or electric field), active power and apparent power. When the light beam transmitted through the analyzer are transformed into electric signals, three kinds of information are included: the DC term corresponding to an active power, the term with frequency ω(50 Hz) corresponding to current or voltage, and the term with frequency 2ω(100 Hz) corresponding to an apparnt power.So, we can use the electric filter circuit to pick out the DC component for measuring active power; to pick out the component with frequency ω(50 Hz) for measuring current or voltage; and to pick out the component with frequency 2ω(100 Hz) for measuring apparent power. The paper discusses what quantities are measured when the analyzer is set on certain definite values, and ponts out the optimum selection for various measurements. 展开更多
关键词 Pockels-effect Faraday-effect electric quantity MEASUREMENT light modulation
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Spatial light modulation for femtosecond laser manufacturing:Current developments and challenges 被引量:1
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作者 ZANG Xue LIU ZiTing +4 位作者 XU YiShi WANG Yi WANG Qing LI ZhenZe WANG Lei 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2024年第1期60-72,共13页
Since the invention of lasers,spatial-light-modulated laser processing has become a powerful tool for various applications.It enables multidimensional and dynamic modulation of the laser beam,which significantly impro... Since the invention of lasers,spatial-light-modulated laser processing has become a powerful tool for various applications.It enables multidimensional and dynamic modulation of the laser beam,which significantly improves the processing efficiency,accuracy,and flexibility,and presents wider prospects over traditional mechanical technologies for machining three-dimensional,hard,brittle,or transparent materials.In this review,we introduce:(1)The role of spatial light modulation technology in the development of femtosecond laser manufacturing;(2)the structured light generated by spatial light modulation and its generation methods;and(3)representative applications of spatial-light-modulated femtosecond laser manufacturing,including aberration correction,parallel processing,focal field engineering,and polarization control.Finally,we summarize the present challenges in the field and possible future research. 展开更多
关键词 femtosecond laser manufacturing spatial light modulation structured light aberration correction parallel processing focal field engineering polarization control
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Light-field modulation and optimization near metal nanostructures utilizing spatial light modulators
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作者 Zini Cao Hai Lin +3 位作者 Yuqing Cheng Yixuan Xu Qihuang Gong Guowei Lü 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第10期1-14,共14页
Plasmonic modes within metal nanostructures play a pivotal role in various nanophotonic applications.However,a significant challenge arises from the fixed shapes of nanostructures post-fabrication,resulting in limited... Plasmonic modes within metal nanostructures play a pivotal role in various nanophotonic applications.However,a significant challenge arises from the fixed shapes of nanostructures post-fabrication,resulting in limited modes under ordinary illumination.A promising solution lies in far-field control facilitated by spatial light modulators(SLMs),which enable on-site,real-time,and non-destructive manipulation of plasmon excitation.Through the robust modulation of the incident light using SLMs,this approach enables the generation,optimization,and dynamic control of surface plasmon polariton(SPP)and localized surface plasmon(LSP)modes.The versatility of this technique introduces a rich array of tunable degrees of freedom to plasmon-enhanced spectroscopy,offering novel approaches for signal optimization and functional expansion in this field.This paper provides a comprehensive review of the generation and modulation of SPP and LSP modes through far-field control with SLMs and highlights the diverse applications of this optical technology in plasmon-enhanced spectroscopy. 展开更多
关键词 surface plasmon spatial light modulator dynamic control plasmon-enhanced spectroscopy
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A high-contrast imaging coronagraph for segmented-mirror large aperture telescopes using a spatial light modulator
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作者 Jiangpei Dou Huanyu Dong 《Astronomical Techniques and Instruments》 CSCD 2024年第3期166-170,共5页
The primary mirrors of current and future large telescopes always employ a segmented mirror configuration.The small but non-negligible gaps between neighboring segments cause additional diffraction,which restricts the... The primary mirrors of current and future large telescopes always employ a segmented mirror configuration.The small but non-negligible gaps between neighboring segments cause additional diffraction,which restricts the performance of high-contrast coronagraph.To solve this problem,we propose a coronagraph system based on a single liquid crystal spatial light modulator(SLM).This spatial light modulator is used for amplitude apodization,and its feasibility and potential performance are demonstrated using a laboratory setup using the stochastic parallel gradient descent(SPGD)algorithm to control the spatial light modulator,which is based on point spread function(PSF)sensing and evaluation and optimized for maximum contrast in the discovery working area as a merit function.The system delivers a contrast in the order of 10−6,and shows excellent potential to be used in current and future large aperture telescopes,both on the ground and in space. 展开更多
关键词 Liquid crystal spatial light modulator Amplitude apodized pupil Large aperture telescopes
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Intelligent Solar Chasing Street Light System Design and Fabrication Summaries
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作者 Liyan Zhang Qingying Zhou +1 位作者 Yueming Zhan Hu Guo 《Journal of Electronic Research and Application》 2024年第6期103-111,共9页
This project adopts an advanced microcontroller as the core control unit,which accurately commands the servo drive,realizes the real-time light chasing and charging function of the solar panel,and effectively manages ... This project adopts an advanced microcontroller as the core control unit,which accurately commands the servo drive,realizes the real-time light chasing and charging function of the solar panel,and effectively manages the power supply system of the street light.At the same time,the system is able to continuously monitor the operation status of the servo within the range of 0°to 180°to ensure that it is trouble-free and not offline.The hardware system construction consists of five modules:a power module,solar panel module,servo module,street light module,and Organic Light-Emitting Diode(OLED)display module.Each module works together to support the stable operation of the whole system.The system workflow is to accurately determine the direction of the light source by collecting real-time light intensity data through four precision photoresistors.Subsequently,the microcontroller intelligently controls the helm module based on these data to drive the solar panel to rotate within a range of 180°to accurately track the sun’s orientation.The street light provides two lighting modes,automatic and manual,to meet the needs of different scenarios.During the daytime,the solar panels work actively to monitor and collect solar energy efficiently in real-time,meanwhile,when night falls,the solar panels switch to standby mode and the streetlights light up automatically,illuminating the road ahead for pedestrians.Compared with the traditional solar street lights on the market,the intelligent solar light chasing road system introduced in this project has significant advantages.Its unique light-chasing algorithm enables the solar panel to continuously track the light source from sunrise to sunset,thus significantly improving the charging efficiency.Compared with traditional street lights,the biggest advantage of this project is the proposed light-chasing algorithm,which can always charge from sunrise until sunset,making the charging efficiency increase by 38%to 47%.The charging efficiency is 20%to 38%higher than that of traditional street lamps.Simultaneously,the biggest advantage of this project is that the power storage capacity is higher than 35%of the traditional solar street light.Bringing users a more durable and stable lighting experience. 展开更多
关键词 Microcontroller control Power supply module Solar panel module Servo module Street light module OLED display module
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Ultra-broadband spatial light modulation with dual-resonance coupled epsilon-near-zero materials 被引量:2
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作者 Qin Chen Shichao Song +3 位作者 Huacun Wang Li Liang Yajin Dong Long Wen 《Nano Research》 SCIE EI CSCD 2021年第8期2673-2680,共8页
It has been found that the dielectric constants of transparent conductive oxides(TCOs)can be adjusted in an extremely large range by tuning the carrier density.Due to the remarkable light confinement property of the e... It has been found that the dielectric constants of transparent conductive oxides(TCOs)can be adjusted in an extremely large range by tuning the carrier density.Due to the remarkable light confinement property of the epsilon-near-zero(ENZ)effect of TCOs,it has attracted extensive interests of light modulation.However,the operation wavelength bandwidth is usually limited by optical resonance that is applied to enhance the light-TCOs interaction.In this work,a dual-resonance light coupling scheme is proposed to expand the modulation depth-bandwidth product with almost one order-of-magnitude improvement.In a metallic subwavelength grating structure with deep trenches backed by a ground plane,the ENZ mode can be coupled to both magnetic resonance and Fabry-Perot resonance respectively by tuning the bias.Decent light modulation can be obtained in a large operation wavelength band covering two resonances by optimizing the dual-resonance configuration.Such a reconfigurable efficient broadband modulation is important for robust communication link and possesses remarkable capacity for wavelength division multiplexing. 展开更多
关键词 epsilon-near-zero spatial light modulation plasmonics transparent conductive oxides field effect
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Repaired morphology of CO_(2)laser rapid ablation mitigation of fused silica and its influence on downstream light modulation 被引量:1
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作者 TAN Chao ZHAO LinJie +5 位作者 CHEN MingJun CHENG Jian ZHANG Yu ZHANG Jiong YANG Hao YIN ZhaoYang 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2022年第5期1116-1126,共11页
The threat of cascading damage to downstream components caused by the light modulation intensification of laser repaired morphology on the surface of fused silica optics cannot be ignored in high-power laser systems.T... The threat of cascading damage to downstream components caused by the light modulation intensification of laser repaired morphology on the surface of fused silica optics cannot be ignored in high-power laser systems.This paper uses the angular spectrum diffraction theory based on the analysis of repaired surface morphology of CO_(2)laser rapid ablation mitigation to study the influence of different repaired morphologies on the downstream 355 nm laser transmission.Studies show that the arc-shaped laser processing lines on the repaired surface are formed by the residual height superposition of the material after laser scanning of two adjacent layers,and the short-pulse laser can substantially suppress the heat-affected zone of the repaired area.The offaxis ring caustic and on-axis hotspot are sequentially generated in the downstream modulated light fields of the conical repaired sites with different diameters.A secondary peak with modulation larger than 3 emerges downstream of the modulation curve.Meanwhile,the maximum modulation and the secondary peak increase with the diameter and cone angle of the repaired site,and the position of the secondary peak appears farther away from the rear surface.The modulations of three repaired sites with cone angles of 15°,20°,and 25°can finally be stabilized below 3.Overall,the downstream optics should be installed far away from the positions where the maximum modulation and the secondary peak emerge.Additionally,the maximum value and the secondary peak of the downstream light modulation of double repaired sites are larger than that of the single repaired site,and both rise as the repaired sizes increase.Thus,large-scale and large-size repairing of multiple surface damages in the same area should be avoided in the laser repairing of fused silica. 展开更多
关键词 fused silica laser repairing morphology light modulation secondary peak double repaired sites
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Simulation and optimization of spatial light modulation of twisted-nematic liquid crystal display
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作者 马百恒 姚保利 +4 位作者 严绍辉 彭飞 闵俊伟 雷铭 叶彤 《Chinese Optics Letters》 SCIE EI CAS CSCD 2010年第10期960-963,共4页
The approaches to obtaining desired intensity or phase modulation by twisted-nematic liquid crystal display (TN-LCD) have been extensively studied based on the knowledge of the LCD's internal structure parameters. ... The approaches to obtaining desired intensity or phase modulation by twisted-nematic liquid crystal display (TN-LCD) have been extensively studied based on the knowledge of the LCD's internal structure parameters. Generally, the TN-LCD placed between two linear polarizers (P) produces coupled intensity and phase modulation. To obtain the commonly used phase-only modulation, quarter wave plates (QWPs) are often used in front of and/or behind the LCD. Here we present a method to optimize the optical modulation properties of the TN-LCD to obtain phase-only modulation in the configuration of P-QWP-LCD-QWP-P each with proper orientation. Our method is based on the macroscopical Jones matrix descriptions for the LCD, the QWPs, and the linear polarizers. Through Jones matrix calculations, the orientations of the polarizers and QWPs can be optimized to satisfy differently desired modulation demands. In contrast to the traditional method, which requires knowledge of the LCD's internal structure parameters, our method simplified the complicated theory analysis and can work in the absence of information on the LCD's internal structure parameters, which are usually not available for the commercial products. 展开更多
关键词 Crystal structure light modulation Liquid crystals Liquids Nematic liquid crystals Optical instruments Optical properties Optimization Phase modulation
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A review of liquid crystal spatial light modulators:devices and applications 被引量:4
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作者 Yiqian Yang Andrew Forbes Liangcai Cao 《Opto-Electronic Science》 2023年第8期1-29,共29页
Spatial light modulators,as dynamic flat-panel optical devices,have witnessed rapid development over the past two decades,concomitant with the advancements in micro-and opto-electronic integration technology.In partic... Spatial light modulators,as dynamic flat-panel optical devices,have witnessed rapid development over the past two decades,concomitant with the advancements in micro-and opto-electronic integration technology.In particular,liquid-crystal spatial light modulator(LC-SLM)technologies have been regarded as versatile tools for generating arbitrary optical fields and tailoring all degrees of freedom beyond just phase and amplitude.These devices have gained significant interest in the nascent field of structured light in space and time,facilitated by their ease of use and real-time light manipulation,fueling both fundamental research and practical applications.Here we provide an overview of the key working principles of LC-SLMs and review the significant progress made to date in their deployment for various applications,covering topics as diverse as beam shaping and steering,holography,optical trapping and tweezers,measurement,wavefront coding,optical vortex,and quantum optics.Finally,we conclude with an outlook on the potential opportunities and technical challenges in this rapidly developing field. 展开更多
关键词 liquid crystal spatial light modulators liquid crystal devices structured light HOLOGRAPHY APPLICATIONS
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Superpixel-Based Complex Field Modulation Using a Digital Micromirror Device for Focusing Light through Scattering Media 被引量:1
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作者 You-Quan Jia Qi Feng +3 位作者 Bin Zhang Wei Wang Cheng-You Lin Ying-Chun Ding 《Chinese Physics Letters》 SCIE CAS CSCD 2018年第5期39-42,共4页
We present a digital micromirror device(DMD) based superpixel method for focusing light through scattering media by modulating the complex field of incident light. Firstly, we numerically and experimentally investig... We present a digital micromirror device(DMD) based superpixel method for focusing light through scattering media by modulating the complex field of incident light. Firstly, we numerically and experimentally investigate focusing light through a scattering sample using the superpixel methods with different target complex fields.Then, single-point and multiple-point focusing experiments are performed using this superpixel-based complex modulation method. In our experiment, up to 71.5% relative enhancement is realized. The use of the DMDbased superpixel method for the control of the complex field of incident light opens an avenue to improve the enhancement of focusing light through scattering media. 展开更多
关键词 DMD Superpixel-Based Complex Field modulation Using a Digital Micromirror Device for Focusing light through Scattering Media
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Diffractive characteristics of the liquid crystal spatial light modulator 被引量:3
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作者 曹召良 穆全全 +2 位作者 胡立发 刘永刚 宣丽 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第6期1665-1671,共7页
The liquid crystal spatial light modulator (LC SLM) is very suitable for wavefront correction and optical testing and can produce a wavefront with large phase change and high accuracy. The LC SLM is composed of thou... The liquid crystal spatial light modulator (LC SLM) is very suitable for wavefront correction and optical testing and can produce a wavefront with large phase change and high accuracy. The LC SLM is composed of thousands of pixels and the pixel size and shape have effects on the diffractive characteristics of the LC SLM. This paper investigates the pixel effect on the phase of the wavefront with the scalar diffractive theory. The results show that the maximum optical path difference modulation is 41μm to produce the paraboloid wavefront with the peak to valley accuracy better than λ/10. Effects of the mismatch between the pixel and the period, and black matrix on the diffraction efficiency of the LC SLM are also analysed with the Fresnel phase lens model. The ability of the LC SLM is discussed for optical testing and wavefront correction based on the calculated results. It shows that the LC SLM can be used as a wavefront corrector and a compensator. 展开更多
关键词 liquid crystal spatial light modulator diffraction efficiency PIXEL WAVEFRONT
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3D fluorescence emission difference microscopy based on spatial light modulator 被引量:1
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作者 Guangyuan Zhao Zihao Rong +2 位作者 Cuifang Kuang Cheng Zheng Xu Liu 《Journal of Innovative Optical Health Sciences》 SCIE EI CAS 2016年第3期83-92,共10页
We report three-dimensional fluorescence emission difference(3D-FED)microscopy using a spatial light modulator(SLM).Zero phase,0–2vortex phase and binary 0-pi phase are loaded on the SLM to generate the correspondin... We report three-dimensional fluorescence emission difference(3D-FED)microscopy using a spatial light modulator(SLM).Zero phase,0–2vortex phase and binary 0-pi phase are loaded on the SLM to generate the corresponding solid,doughnut and z-axis hollow excitation spot,respectively.Our technique achieves super-resolved image by subtracting three di®erently acquired images with proper subtractive factors.Detailed theoretical analysis and simulation tests are proceeded to testify the performance of 3D-FED.Also,the improvement of lateral and axial resolution is demonstrated by imaging 100 nm°uorescent beads.The experiment yields lateral resolution of 140 nm and axial resolution of approximate 380 nm. 展开更多
关键词 SUPER-RESOLUTION fluorescence imaging 3D-FED microscopy spatial light modulator
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Fast generation of controllable equal-intensity four beams based on isosceles triangle multilevel phase grating realized by liquid crystal spatial light modulator 被引量:1
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作者 刘翔 张健 +1 位作者 吴丽莹 甘雨 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第2期287-294,共8页
Liquid crystal spatial light modulator (LCSLM) realizing equal-intensity multiple beams often has some features, i.e., phase valley between two adjacent pixels, flybaek region when phase decreases immediately from 2... Liquid crystal spatial light modulator (LCSLM) realizing equal-intensity multiple beams often has some features, i.e., phase valley between two adjacent pixels, flybaek region when phase decreases immediately from 2~r to 0, and inevitable backplane curvature, which are different from those of most conventional diffractive optical elements (DOEs), such as static DOEs. For optimal intensity uniformity, equal-intensity multi-beam generation must be considered for these artifacts. We present a tunable-grating method in which the intensity uniformity can be improved by considering the LCSLM artifacts. For instance, tuning phase modulation depth of the grating, called isosceles triangle multilevel phase grating (ITMPG), can be used not only to improve the intensity uniformity, but also to fast steer four beams with narrow beamwidths, determined by the same effective aperture of ITMPG. Improved intensity uniformity and high relative diffraction efficiency are demonstrated through experiments with phase-only LCSLM. 展开更多
关键词 liquid crystal spatial light modulator phase grating SPLITTER
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High-voltage super-junction lateral double-diffused metal-oxide semiconductor with a partial lightly doped pillar 被引量:3
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作者 伍伟 张波 +2 位作者 方健 罗小蓉 李肇基 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第6期633-636,共4页
A novel super-junction lateral double-diffused metal-oxide semiconductor (SJ-LDMOS) with a partial lightly doped P pillar (PD) is proposed. Firstly, the reduction in the partial P pillar charges ensures the charge... A novel super-junction lateral double-diffused metal-oxide semiconductor (SJ-LDMOS) with a partial lightly doped P pillar (PD) is proposed. Firstly, the reduction in the partial P pillar charges ensures the charge balance and suppresses the substrate-assisted depletion effect. Secondly, the new electric field peak produced by the P/P junction modulates the surface electric field distribution. Both of these result in a high breakdown voltage (BV). In addition, due to the same conduction paths, the specific on-resistance (Ron,sp) of the PD SJ-LDMOS is approximately identical to the conventional SJ-LDMOS. Simulation results indicate that the average value of the surface lateral electric field of the PD SJ-LDMOS reaches 20 V/μm at a 15 μm drift length, resulting in a BV of 300 V. 展开更多
关键词 super-junction lateral double-diffused metal-oxide semiconductor partial lightly doped pillar electric field modulation breakdown voltage
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Steering light into logic patterns with two-dimensional cascaded multimode waveguide
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作者 周海峰 杨建义 +1 位作者 王明华 江晓清 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第3期740-745,共6页
Steering light into logic patterns with two-dimensional cascaded multimode waveguide is demonstrated. By employing the imaging properties of 2D multimode interference (MMI) and partial phase modulation method, the d... Steering light into logic patterns with two-dimensional cascaded multimode waveguide is demonstrated. By employing the imaging properties of 2D multimode interference (MMI) and partial phase modulation method, the design ideas and the implementing methods of the 2^(2×2) bits type spatial logic steering are discussed; therefore the structure of logical pattern is proposed. Numerical simulation is carried out to verify the design in detail by using the beam propagation method. It is expected to realize logic coders by using the integrated optical methods and exploit their potential applications in the field of optical logic. 展开更多
关键词 integrated optics multimode interference spatial light modulators logic patterns
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Generation of Mathieu beams using angular pupil modulation
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作者 Zhijun Ren Jinping He Yile Shi 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第12期277-281,共5页
By using an amplitude-type spatial light modulator to load angular spectrum of Mathieu function distribution along a narrow annular pupils, the Durnin’s experimental setup is extended to generate various types of Mat... By using an amplitude-type spatial light modulator to load angular spectrum of Mathieu function distribution along a narrow annular pupils, the Durnin’s experimental setup is extended to generate various types of Mathieu beams. As a special type of Mathieu beams, Bessel beams are also generated using this optical setup. Furthermore, the optical morphology of the Mathieu beams family are also presented and analyzed. 展开更多
关键词 diffraction-free beams Mathieu beams angular modulation spatial light modulator
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Calibration and data restoration of light field modulated imaging spectrometer
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作者 Li-Juan Su Qiang-Qiang Yan +2 位作者 Yan Yuan Shi-Feng Wang Yu-Jian Liu 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第8期179-186,共8页
A light field modulated imaging spectrometer (LFMIS) can acquire the spatial-spectral datacube of targets of interest or a scene in a single shot. The spectral information of a point target is imaged on the pixels c... A light field modulated imaging spectrometer (LFMIS) can acquire the spatial-spectral datacube of targets of interest or a scene in a single shot. The spectral information of a point target is imaged on the pixels covered by a microlens. The pixels receive spectral information from different spectral filters to the diffraction and misalignments of the optical components. In this paper, we present a linear spectral multiplexing model of the acquired target spectrum. A calibration method is proposed for calibrating the center wavelengths and bandwidths of channels of an LFMIS system based on the liner-variable filter (LVF) and for determining the spectral multiplexing matrix. In order to improve the accuracy of the restored spectral data, we introduce a reconstruction algorithm based on the total least square (TLS) approach. Simulation and experimental results confirm the performance of the spectrum reconstruction algorithm and validate the feasibility of the proposed calibrating scheme. 展开更多
关键词 light field modulated imaging spectrometer linear-variable filter spectral calibration spectral re-construction
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Spatial Light Modulator with BSO Crystal and Its Application in Holography
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作者 WANG Wensheng (Changchun College of Optics and Fine Mechanics,Changchun 130022,CHN) 《Semiconductor Photonics and Technology》 CAS 1998年第1期36-39,共4页
The combined use of the photoelectric and electro-optic properties of BSO crystal (Bi 12 SiO 20 ) leads to realize spatial light modulation.Under some condition,BSO crystal can become birefringent depending on... The combined use of the photoelectric and electro-optic properties of BSO crystal (Bi 12 SiO 20 ) leads to realize spatial light modulation.Under some condition,BSO crystal can become birefringent depending on a local illuminance.The relationship between the distributions of an illuminance and a birefringence will be discussed.This spatial light modulator can work in real-time. The experiment shows,in order to increase the sensitivity of BSO crystal,an electric field of 6 kV/cm at an atmosphere pressure of 15×10 5 Pa should be applied to BSO crystal.With BSO we have measured 3-dimensional deformation by means of real-time holography. 展开更多
关键词 BSO Crystal Computer HOLOGRAPHY INTERFEROGRAM Spatial light Modulator TV-monitor
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Liquid Crystal Television Spatial Light Modulator
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作者 SHIHongju SHIYongji 《Semiconductor Photonics and Technology》 CAS 1998年第4期197-208,234,共13页
The liquid crystal television spatial light modulator (LCTVSLM) characterized is usable in optical processing applications,e.g.,optical pattern recognition,associative memory, optical computing,correlation detection a... The liquid crystal television spatial light modulator (LCTVSLM) characterized is usable in optical processing applications,e.g.,optical pattern recognition,associative memory, optical computing,correlation detection and optical data processing systems.The array performance and real-time optical correlation applications are reviewed. 展开更多
关键词 Associative Memory Correlation Detection Liquid Crystal Television Optical Computing Optical Data Optical Pattern Recognition Spatial light Modulator
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Multi-channel generation of vortex beams with controllable polarization states and orbital angular momentum
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作者 吕子瑶 王潘 王长顺 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第12期90-97,共8页
Optical vortices with tunable polarization states and topological charges are widely investigated in various physical systems and practical devices for high-capacity optical communication.However,this kind of structur... Optical vortices with tunable polarization states and topological charges are widely investigated in various physical systems and practical devices for high-capacity optical communication.However,this kind of structured light beams is usually generated using several polarization and spatial phase devices,which decreases the configurability of optical systems.Here,we have designed a kind of polarized optical multi-vortices generator based on the Stokes-Mueller formalism and cross-phase modulation.In our scheme,multi-channel generation of polarized vortex beams can be realized through a single optical element and a single-input Gaussian beam.The polarization states and orbital angular momentum of the generated light beams are all-optically controllable.Furthermore,the proposed polarized optical multi-vortices generator has also been demonstrated experimentally through one-step holographic recording in an azobenzene liquid-crystalline film and the experimental results agree with theoretical analysis. 展开更多
关键词 light field modulation HOLOGRAPHY optical vortex POLARIZATION
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