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Design of Time-Resolved Shifted Dual Transmission Grating Spectrometer for the X-Ray Spectrum Diagnostics 被引量:1
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作者 王保清 易涛 +6 位作者 王传珂 朱效立 李廷帅 李晋 刘慎业 江少恩 丁永坤 《Plasma Science and Technology》 SCIE EI CAS CSCD 2016年第7期781-785,共5页
A new time-resolved shifted dual transmission grating spectrometer (SDTGS) is designed and fabricated in this work. This SDTGS uses a new shifted dual transmission grating (SDTG) as its dispersive component, which... A new time-resolved shifted dual transmission grating spectrometer (SDTGS) is designed and fabricated in this work. This SDTGS uses a new shifted dual transmission grating (SDTG) as its dispersive component, which has two sub transmission gratings with different line densities, of 2000 lines/mm and 5000 lines/mm. The axes of the two sub transmission gratings in SDTG are horizontally and vertically shifted a certain distance to measure a broad range of 0.1-5 keV time-resolved X-ray spectra. The SDTG has been calibrated with a soft X-ray beam of the synchrotron radiation facility and its diffraction efficiency is also measured. The designed SDTGS can take full use of the space on a record panel and improve the precision for measuring spatial and temporal spectrum simultaneously. It will be a promising application for accurate diagnosis of the soft X-ray spectrum in inertial confinement fusion. 展开更多
关键词 shifted dual transmission grating spectrometer GRATING X-ray spectra diag-nosis of the soft X-ray spectrum
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DEFORMATION MEASUREMENT USING DUAL-FREQUENCY PROJECTION GRATING PHASE-SHIFT PROFILOMETRY 被引量:2
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作者 Yanming Chen Yuming He Eryi Hu Hongmao Zhu 《Acta Mechanica Solida Sinica》 SCIE EI 2008年第2期110-115,共6页
2π phase ambiguity problem is very important in phase measurement when a deformed object has a large out of plane displacement. The dual-frequency projection grating phaseshifting profilometry (PSP) can be used to ... 2π phase ambiguity problem is very important in phase measurement when a deformed object has a large out of plane displacement. The dual-frequency projection grating phaseshifting profilometry (PSP) can be used to solve such an issue. In the measurement, two properchosen frequency gratings are utilized to synthesize an equivalent wavelength grating which ensures the computed phase in a principal phase range. Thus, the error caused by the phase unwrapping process with the conventional phase reconstruct algorithm can be eliminated. Finally, experimental result of a specimen with large plastic deformation is given to prove that the proposed method is effective to handle the phase discontinuity. 展开更多
关键词 dual-frequency phase-shift profilometry projection grating phase unwrapping DEFORMATION
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Single order soft X-ray diffraction with quasi-random radius pinhole array spectroscopic photon sieves
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作者 张强强 魏来 +5 位作者 杨祖华 钱凤 范全平 张博 谷渝秋 曹磊峰 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第4期342-346,共5页
A novel single order diffraction grating in the soft X-ray region, called quasi-random radius pinhole array spectro- scopic photon sieves (QRSPS), is proposed in this paper. This new grating is composed of pinholes ... A novel single order diffraction grating in the soft X-ray region, called quasi-random radius pinhole array spectro- scopic photon sieves (QRSPS), is proposed in this paper. This new grating is composed of pinholes on a substrate, whose radii are quasi-random, while their centers are regular. Analysis proves that its transmittance function across the grating bar is similar to that of sinusoidal transmission gratings. Simulation results show that the QRSPS can suppress higher-order diffraction effectively. And the QRSPS would still retain its characteristic of single order diffraction when we take the effect of X-ray penetration into account. These properties indicate that the QRSPS can be used in the soft X-ray spectra measurement. 展开更多
关键词 diffraction properties diffraction gratings soft X-rays single-order diffraction
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Dynamic analysis of holographic gratings in a multi-wavelength visible light sensitive photopolymer
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作者 陈珂 成建群 +1 位作者 王艳 黄明举 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第1期303-310,共8页
A dynamic theoretical model of photochemistry and hologram formation in holographic photopolymer is established, and the dynamic development process of holographic gratings in the photopolymer is discussed with the mo... A dynamic theoretical model of photochemistry and hologram formation in holographic photopolymer is established, and the dynamic development process of holographic gratings in the photopolymer is discussed with the model. A novel multi-wavelength visible light sensitive photopolymer for holographic storage is prepared. The influence of exposure wavelength on holographic storage characteristics is analysed. By fitting the experimental data of transmittance and diffraction efficiency to a function of time with different exposure intensities and wavelengths, the variations of dynamic parameters of photochemistry and photopolymerization diffusion are presented. 展开更多
关键词 photopolymer gratings TRANSMITTANCE diffraction efficiency KINETICS
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Diffraction of an ultrashort pulsed beam with arbitrary polarization state from a volume holographic grating in LiNbO3 crystals
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作者 王春花 刘立人 +3 位作者 闫爱民 周煜 刘德安 胡志娟 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第1期100-105,共6页
Based on a modified coupled wave theory of Kogelnik, we have studied the diffraction of an ultrashort pulsed beam with an arbitrary polarization state from a volume holographic grating in photorefractive LiNbO3 crysta... Based on a modified coupled wave theory of Kogelnik, we have studied the diffraction of an ultrashort pulsed beam with an arbitrary polarization state from a volume holographic grating in photorefractive LiNbO3 crystals. The results indicate that the diffracted intensity distributions in the spectral and temporal domains and the diffraction efficiency of the grating are both changed by the polarization state and spectral bandwidth of the input pulsed beam. A method is given of choosing the grating parameters and input conditions to obtain a large variation range of the spectral bandwidth of the diffracted pulsed beam with an appropriate diffraction efficiency. Our study presents a possibility of using a volume holographic grating recorded in anisotropic materials to shape a broadband ultrashort pulsed beam by modulating its polarization state. 展开更多
关键词 diffraction optics coupled wave theory volume holographic grating ultrashort pulsed beam
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OPTICAL STORAGE MECHANISM AND HIGH-ORDER DIFFRACTION PROPERTIES OF NITROAZOBENZENE-CONTAINING POLYESTER FILMS
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作者 颜星中 魏雄 +3 位作者 罗挺 蔡志岗 梁兆熙 余振新 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1998年第1期67-74,共8页
Using Nd:YAG second harmonic pulse (100 ps), the optical storage properties of two novel polyesters, poly [4'-bis (N, N-oxyethylene) imino-4-nitroazobenzene succinyl] and poly [2'-chloro-4'-bis (N, N-oxyet... Using Nd:YAG second harmonic pulse (100 ps), the optical storage properties of two novel polyesters, poly [4'-bis (N, N-oxyethylene) imino-4-nitroazobenzene succinyl] and poly [2'-chloro-4'-bis (N, N-oxyethylene) imino-4-nitroazobenzene succinyl] have been studied by multiwave mixing. The high-order diffractions of the orientation gratings induced by anisotropy via the reorientation of nitroazobenzene groups and optical information storage with long-term stability have been realized by multiwave mixing in their films. Up to 3rd order forward diffraction was detected in two wave mixing, while up to 4th order backward diffraction was observed in degenerated four wave mixing. The recording mechanism was explained by the trans-cis-trans isomerization cycles of azobenzene groups. The isomerization of these azobenzene groups probably undergoes with inversion mechanism under the experimental conditions. The information recorded in these films has been kept for more than 6 months. 展开更多
关键词 azobenzene-containing polyester multiwave mixing optical storage photoinduced anisotropy high-order diffraction of orientation grating
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Analysis of restriction factors of widening diffraction bandwidth of multilayer dielectric grating
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作者 汪剑鹏 晋云霞 +2 位作者 麻健勇 邵建达 范正修 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第10期265-272,共8页
In order to design a multilayer dielectric grating with wide-bandwidth diffraction spectrum, the restriction factors of both the reflection bandwidth of multilayer dielectric high-reflectivity mirror and the guided-mo... In order to design a multilayer dielectric grating with wide-bandwidth diffraction spectrum, the restriction factors of both the reflection bandwidth of multilayer dielectric high-reflectivity mirror and the guided-mode resonance phe- nomenon are studied in detail. The reflection characteristics of high-reflectivity mirror in zeroth and -lst transmitted diffraction orders are quantitatively evaluated. It is found that the reflection bandwidth of high-reflectivity mirror in -lst transmitted diffraction order, which determines the final diffraction bandwidth of multilayer dielectric grating, is evidently compressed. Furthermore, it is demonstrated that the reducing of grating period is an effective approach to the elimination of guided mode resonance over a required broad band range both spectrally and angularly. In addition, the expressions for calculating the maximum period ensuring no guided mode resonance in the required bandwidth are derived. Finally, two high-efficiency pulse-compression gratings with broad-band are presented. 展开更多
关键词 multilayer dielectric grating broad band diffraction bandwidth reflection bandwidth guided-mode resonance
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Diffraction Pattern of a Rotated Grating
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作者 Pirooz Mohazzabi Daniel J. Mattson Joel Ambriz Ponce Jr 《Journal of Applied Mathematics and Physics》 2019年第8期1870-1876,共7页
Diffraction patterns of a rotated grating are investigated from both theoretical and experimental points of view. It is shown that as the grating rotates, the angle of deviation of each diffracted line relative to the... Diffraction patterns of a rotated grating are investigated from both theoretical and experimental points of view. It is shown that as the grating rotates, the angle of deviation of each diffracted line relative to the incident light goes through a minimum, and that the angle between any two successive diffracted lines goes through a minimum value which is the same for all adjacent diffracted lines. It is also shown that the angle between diffraction lines with n=1 and n=-1 is not sensitive to small variations of the grating from being normal to the incident light. Finally, a method is suggested for determining the line distance of a diffraction grating with high accuracy. 展开更多
关键词 diffraction PATTERN Rotated GRATING ANGLE of Deviation
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Optical diffraction gratings embedded in BK-7 glass by low-density plasma formation using femtosecond laser
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作者 Jung-Kyu PARK Sung-Hak CHO +1 位作者 Kwang-Ho KIM Myung-Chang KANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第A01期165-169,共5页
The optical embedded diffraction gratings with the internal refractive index modification in BK-7 glass plates were demonstrated using low-density plasma formation excited by a high-intensity femtosecond (130 fs) Ti... The optical embedded diffraction gratings with the internal refractive index modification in BK-7 glass plates were demonstrated using low-density plasma formation excited by a high-intensity femtosecond (130 fs) Ti: sapphire laser (λp=790 rim). The refractive index modifications with diameters ranging from 400 nm to 4 gm were photoinduced after plasma formation occurred upon irradiation with peak intensities of more than 1 ×10^13 W/cm2. The graded refractive index profile was fabricated to be a symmetric around the center of the point at which low-density plasma occurred. The maximum refractive index change (An) was estimated to be 1.5x10 2. Several optical embedded gratings in BK-7 glass plate were demonstrated with refractive index modification induced by the scanning of low-density plasma formation. 展开更多
关键词 BK-7 glass plate diffraction grating refractive index modification plasma formation femtosecond laser
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LO-RAY-LIGH@ Diffraction Gratings in UV-VIS Spectroscopy
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作者 Uwe Oppermann Marion Egelkraut-Holtus Tatsuyoshi Fujiwara 《Journal of Chemistry and Chemical Engineering》 2013年第12期1117-1120,共4页
It has been more than half a century since the release of the first Shimadzu UV-VIS (UV-visible) spectrophotometer QB-50 in 1952, and during this time more than 160,000 UV-VIS spectrometers have been produced and in... It has been more than half a century since the release of the first Shimadzu UV-VIS (UV-visible) spectrophotometer QB-50 in 1952, and during this time more than 160,000 UV-VIS spectrometers have been produced and installed in a wide variety of different applications. A lot of technical innovations have been implemented to improve the performance and significantly reduce the stray light levels. The latest innovation during development of sophisticated spectrophotometers is based on a new holographic exposure method and optimized etching process which has made it possible to produce both high-efficient and exceptionally low stray light gratings. These LO-RAY-LIGH~ gratings have guaranteed values of stray light at the intermediate position between zero-order and first-order lights. The values are measured by Shimadzu's laser stray-light-measuring system. The latest development in the series of UV-VIS spectrophotometers is the UV-2700 which is a true double beam double monochromator system in a compact design for high-precision spectral analysis of a wide range of samples including organic and inorganic compounds, biological samples, optical materials and photovoltaics. The high performance optical system is designed with "LO-RAY-LIGH" diffraction gratings, featuring highest efficiency and exceptionally low stray light. The spectrophotometer operates in the wavelength range from 185 nm to 900 nm and allows highly sophisticated applications such as direct measurement of high density samples up to 8 absorbance units without dilution. 展开更多
关键词 LO-RAY-LIGH stray light diffraction grating SPECTROPHOTOMETER single monochromator holographic grating highefficiency double monochromator.
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The Design and Manufacturing of Diffraction Optical Elements to form a Dot-Composed Etalon Image within the Optical Systems
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作者 Sergey Borisovich Odinokov Hike Rafaelovich Sagatelyan 《Optics and Photonics Journal》 2013年第1期102-111,共10页
The possibilities of manufacturing of diffraction optical elements (DOE), using the “Caroline 15 PE” plasma-etching machine were considered. It is established that at thickness of chromic mask of 100 nm the plasma-c... The possibilities of manufacturing of diffraction optical elements (DOE), using the “Caroline 15 PE” plasma-etching machine were considered. It is established that at thickness of chromic mask of 100 nm the plasma-chemical etching (PCE) method reaches depth of surface micro-profile to 1.4 μm on optical glass. It allows increasing the diffraction efficiency of DOE to 0.3 - 0.35 on the second order of diffraction. 展开更多
关键词 Optical Glass Plasma-Chemical Etching SELECTIVITY diffraction gratings MICRO-OPTICS
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Bragg-Angle Diffraction in Slant Gratings Fabricated by Single-Beam Interference Lithography
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作者 Xinping Zhang Shengfei Feng Tianrui Zhai 《Optics and Photonics Journal》 2012年第1期13-16,共4页
A single-beam interference-lithography scheme is demonstrated for the fabrication of large-area slant gratings, which requires exposure of the photoresist thin film spin-coated on a glass plate with polished side-wall... A single-beam interference-lithography scheme is demonstrated for the fabrication of large-area slant gratings, which requires exposure of the photoresist thin film spin-coated on a glass plate with polished side-walls to a single laser beam in the ultraviolet and requires small coherence length of the laser. No additional beam splitting scheme and no adjustments for laser-beam overlapping and for optical path-length balancing are needed. Bragg-angle diffractions are observed as strong optical extinction that is tunable with changing the angle of incidence. This device is important for the design of efficient filters, beam splitters, and photonic devices. 展开更多
关键词 Slant GRATING SINGLE-BEAM Interference Lithography Bragg-Angle diffraction
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典型分形结构光栅的Fraunhofer衍射数值模拟
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作者 曹本澍 左宇轩 +3 位作者 贺禹哲 张博宇 喻有理 王小力 《物理与工程》 2024年第4期176-182,共7页
本文旨在研究Cantor条幅、Cantor地毯、Sierpinski垫片三种自相似分形结构的Fraunhofer衍射场在屏上的光强分布以及自相似分形结构的几何规律.通过复数积分法和位移相移定理,得到了屏幕上不同位置相对光强的数学表达式。随后,使用MATLA... 本文旨在研究Cantor条幅、Cantor地毯、Sierpinski垫片三种自相似分形结构的Fraunhofer衍射场在屏上的光强分布以及自相似分形结构的几何规律.通过复数积分法和位移相移定理,得到了屏幕上不同位置相对光强的数学表达式。随后,使用MATLAB进行数值计算和后处理,以直观的方式呈现出衍射图案.结果显示:衍射光强分布主体对称性由母代衍射图样的对称性确定;随着分形子代的增多,衍射图样在母代对称结构图样上逐渐分支复杂,最终收敛于类母代衍射图样,并满足衍射反比律.内容为光栅衍射和位移相移定理的教学拓展提供参考案例。 展开更多
关键词 分形光栅 分形结构 Fraunhofer衍射 位移相移定理
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Study of transmission grating diffraction efficiencies for soft X-ray
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作者 YANG Jiamin DING Yaonan +8 位作者 ZHENG Zhijian YI Rongqing SUN Kexu CUI Mingqi CUl Congwu ZHU Peiping CHEN Zhenlin LI Chaoguang WANG Yaomei 《Nuclear Science and Techniques》 SCIE CAS CSCD 1999年第2期78-82,共5页
Tansmission grating spectrometers are extensively used to measure absthlute X-ray spectra in a photon-energy range below 1000 eV. The transmission grating,as its dispersive element, must be calibrated to obtain its da... Tansmission grating spectrometers are extensively used to measure absthlute X-ray spectra in a photon-energy range below 1000 eV. The transmission grating,as its dispersive element, must be calibrated to obtain its danaction efficiencies. Calibrations of absolute distraction efficiencies of the tlansmission grating at photon energyof 844eV have been carried out on Beliing Synchrotron mediation Facility. With theaid of grating model, all of the grating structure paraxneters have been determinedand the absolute dchaction efficiencies in a photon-energy range below 2000eV havealso been calculated and discussed. 展开更多
关键词 同步加器辐射 衍射效率 软X射线
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Theory and method of dual-energy x-ray grating phase-contrast imaging
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作者 Feng Rong Yan Gao +2 位作者 Cui-Juan Guo Wei Xu Wei Xu 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第10期597-602,共6页
The principle of dual-energy x-ray grating phase-contrast imaging(DEPCI) is clarified by using the theory of x-ray interference and Fresnel diffraction. A new method of retrieving phase from the two interferograms is ... The principle of dual-energy x-ray grating phase-contrast imaging(DEPCI) is clarified by using the theory of x-ray interference and Fresnel diffraction. A new method of retrieving phase from the two interferograms is proposed for DEPCI,and its feasibility is verified via simulation. Finally, the proposed method applied to DEPCI experiment demonstrates the effectiveness of the method. This paper lays the theoretical foundation for performance optimization of DEPCI and the further integration of DEPCI and computed tomography. 展开更多
关键词 X-RAY imaging dual-ENERGY ANALYZER GRATING PHASE RETRIEVAL
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Measurement of a discontinuous object based on a dual-frequency grating
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作者 乔闹生 蔡新华 姚春梅 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第11期4881-4886,共6页
The dual-frequency grating measurement theory is proposed in order to carry out the measurement of a discontinuous object. Firstly, the reason why frequency spectra are produced by low frequency gratings and high freq... The dual-frequency grating measurement theory is proposed in order to carry out the measurement of a discontinuous object. Firstly, the reason why frequency spectra are produced by low frequency gratings and high frequency gratings in the field of frequency is analysed, and the relationship between the wrapped-phase and the unwrapping-phase is discussed. Secondly, a method to combine the advantages of the two kinds of gratings is proposed: one stripe is produced in the mutation part of the object measured by a suitable low frequency grating designed by MATLAB, then the phase produced by the low frequency grating need not be unfolded. The integer series of stripes is produced by a high frequency grating designed by MATLAB based on the frequency ratio of the two kinds of gratings and the high frequency wrapped-phase, and the high frequency unwrapping-phase is then obtained. In order to verify the correctness of the theoretical analysis, a steep discontinuous object of 600×600 pixels and 10.00 mm in height is simulated and a discontinuous object of ladder shape which is 32.00 mm in height is used in experiment. Both the simulation and the experiment can restore the discontinuous object height accurately by using the dual-frequency grating measurement theory. 展开更多
关键词 dual-frequency grating Fourier transform profilometry measurement of discontinuous object phase unwrapping
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Analysis and Prediction of Effect of Turning Marks Diffraction on Image Quality of Optical System
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作者 Haokun Ye Jianping Zhang +3 位作者 Shuanglong Tan Shangnan Zhao Mingxin Liu Xin Zhang 《Optics and Photonics Journal》 2023年第6期97-108,共12页
Single-point diamond turning (SPDT) is widely used in the machining of infrared materials and metal-based mirrors. Diamond tips can scratch material, replicate the shape of the tip, and create annular turning marks on... Single-point diamond turning (SPDT) is widely used in the machining of infrared materials and metal-based mirrors. Diamond tips can scratch material, replicate the shape of the tip, and create annular turning marks on optical surfaces, which can have unpredictable adverse effects on imaging. In order to predict the effect of turning marks diffraction on the degradation of imaging quality, a model of the influence of SPDT processing parameters on the reduction of system imaging MTF under the influence of ideal grating turning marks diffraction was established. The results show that the depth of the turning mark will lead to the decline of MTF, especially the low frequency information. Finally, a method is proposed to reduce the effect of turning marks diffraction through changing the processing parameters. . 展开更多
关键词 Single-Point Diamond Turning diffraction MTF Blaze Grating
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Optical design of the time-resolved ARPES beamline of the new material spectroscopy experimental station for the update of CAEP THz-FEL facility
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作者 Liang-Liang Du Li-Min Meng +1 位作者 Jiang Li Li-Guo Zhu 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第11期70-74,共5页
The Chinese Academy of Engineering Physics Terahertz Free Electron Laser Facility(CAEP THz FEL,CTFEL)is the only high-average power free electron laser terahertz source based on superconducting accelerators in China.T... The Chinese Academy of Engineering Physics Terahertz Free Electron Laser Facility(CAEP THz FEL,CTFEL)is the only high-average power free electron laser terahertz source based on superconducting accelerators in China.The update of the CTFEL is now undergoing and will expand the frequency range from 0.1–4.2 THz to 0.1–125 THz.Two experimental stations for material spectroscopy and biomedicine will be built.A high harmonic generation(HHG)lightsource based beamline at the material spectroscopy experimental station for time-resolved angle-resolved photoemission spectroscopy(ARPES)research will be constructed and the optical design is presented.The HHG lightsource covers the extreme ultraviolet(XUV)photon energy range of 20–50 eV.A Czerny–Turner monochromator with two plane gratings worked in conical diffraction configuration is employed to maintain the transmission efficiency and preserve the pulse time duration.The calculated beamline transmission efficiency is better than 5%in the whole photon energy range.To our knowledge,this is the first time in China to combine THz-infrared FEL with HHG light source,and this experimental station will be a powerful and effective instrument that will give new research opportunities in the future for users doing research on the dynamic evolution of the excited electron band structure of a material’s surface. 展开更多
关键词 high harmonic generation(HHG) femtosecond extreme ultraviolet pulse conical diffraction grating monochromator transient spectral experiment
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方形纹光栅的Fraunhofer衍射场研究
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作者 王鲁川 佟天波 《沈阳师范学院学报(自然科学版)》 CAS 1999年第3期17-20,共4页
对方形纹光栅的Fraunhofer衍射场进行了研究,给出了衍射场强度分析的一般表达式,并利用计算机绘出了该场的一些衍射光样.
关键词 方形纹光栅 Fraunhofer衍射 光栅 衍射场
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一个新的彩色光谱Fraunhofer光栅衍射方法
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作者 胡晓云 马益平 王玉文 《西北大学学报(自然科学版)》 CAS CSCD 北大核心 1998年第2期114-116,共3页
提出一个彩色光谱新的Fraunhofer光栅衍射方法,通过选用不同常数的光栅进行衍射,可以得到不同级数、不同衍射谱线的水银彩色光谱,直观地达到衍射效果。
关键词 光栅衍射 彩色光谱 光栅常数
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