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Double Q-switched 946 nm laser with MgO:LN electro-optic crystal and MoSe2 saturable absorber 被引量:2
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作者 Bing Bai Yang Bai +3 位作者 Diao Li Yanxiao Sun Jianlin Li Jintao Bai 《Chinese Optics Letters》 SCIE EI CAS CSCD 2018年第3期29-34,共6页
We report a double Q-switched 946 nm laser with a magnesium-oxide-doped LiNbO3 (MgO:LN) electro-optic (EO) crystal and a monolayer molybdenum diselenide (MoSe2) saturable absorber (SA). A pulsed laser diode s... We report a double Q-switched 946 nm laser with a magnesium-oxide-doped LiNbO3 (MgO:LN) electro-optic (EO) crystal and a monolayer molybdenum diselenide (MoSe2) saturable absorber (SA). A pulsed laser diode side-pumped long neodymium-doped yttrium aluminum garnet rod (φ3×65 mm) is used as the gain medium. Large pulse energy up to 3.15 mJ and peak power up to 346 kW are generated at the repetition rate of 550 Hz, corresponding to the beam quality factors of Mx^2=3.849, My^2=3.868. Monolayer MoSe2 nanosheets applied in the experiment would be a promising SA for a passive Q-switching operation. 展开更多
关键词 LN Double Q-switched 946 nm laser with MgO:LN electro-optic crystal and MoSe2 saturable absorber SA YAG MGO
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Electro-optical properties cholesteric liquid of polymer stabilized crystal film* 被引量:2
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作者 Ma Ji Zheng Zhi-Gang +1 位作者 Liu Yong-Gang Xuan Li 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第2期295-301,共7页
Liquid crystals (LCs) and polymers are extensively used in various electro-optical applications. In this paper, normal mode polymer stabilized cholesteric LC film is prepared and studied. The effects of chiral dopan... Liquid crystals (LCs) and polymers are extensively used in various electro-optical applications. In this paper, normal mode polymer stabilized cholesteric LC film is prepared and studied. The effects of chiral dopant and monomer concentrations on the electro-optical properties, such as contrast ratio, driving voltage, hysteresis width and response time, are investigated. The reasons of electro-optical properties influenced by the concentrations of the materials are discussed. Through the proper material recipe, the electro-optical properties of polymer stabilized cholesteric LC film can be optimized. 展开更多
关键词 liquid crystal POLYMER electro-optical property cholesteric liquid crystal
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Electro-optical properties of high birefringence liquid crystal compounds with isothiocyanate and naphthyl group 被引量:1
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作者 彭增辉 王启东 +7 位作者 王少鑫 姚丽双 刘永刚 胡立发 曹召良 穆全全 杨程亮 宣丽 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第9期242-247,共6页
Liquid crystal(LC) compound with isothiocyanate and naphthyl group is an attractive high birefringence LC material,and can be used in optical devices. In this paper, the electro-optical properties of a series of thi... Liquid crystal(LC) compound with isothiocyanate and naphthyl group is an attractive high birefringence LC material,and can be used in optical devices. In this paper, the electro-optical properties of a series of this type of LC compounds were investigated. The melting points and enthalpy values of these LC compounds were higher than those of corresponding compounds with the phenyl group. These compounds exhibited high birefringence with a maximum value of 0.66. Fluorine substitution in the molecular almost does not affect the birefringence value. When these LC compounds with the naphthyl group were dissolved in a commercial LC mixture, the electro-optical properties depending on temperature were investigated. In the low-temperature region, LC mixtures with the naphthyl-group LC compounds exhibited higher viscosity than pure commercial LCs. In the high-temperature region, viscosity values very closely approached each other. When response performance was investigated, figure-of-merit(FoM) values were measured. The Fo M values of LC mixtures containing LC compounds with naphthyl group were lower than those of reference benzene LCs in the low-temperature region. However, in the high-temperature region, the results were reversed. These isothiocyanate LC compounds with naphthyl group can be applied in special fast-response LC device, particularly the ones used under high-temperature conditions. 展开更多
关键词 naphthalene isothiocyanate liquid crystals high birefringence electro-optical property
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A 200 kHz Q-Switched Adhesive-Free Bond Composite Nd:YVO4 Laser using a Double-Crystal RTP Electro-optic Modulator 被引量:3
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作者 于永吉 陈薪羽 +3 位作者 王超 吴春婷 刘瑞 金光勇 《Chinese Physics Letters》 SCIE CAS CSCD 2012年第2期98-101,共4页
A diode-end-pumped electro-optic (EO) Q-switched adhesive-free bond composite Nd:YVO4 laser operating at a repetition rate of 200 kHz is reported.A pair of RbTiOPO4 (RTP) crystals are used as a high repetition EO Q-sw... A diode-end-pumped electro-optic (EO) Q-switched adhesive-free bond composite Nd:YVO4 laser operating at a repetition rate of 200 kHz is reported.A pair of RbTiOPO4 (RTP) crystals are used as a high repetition EO Q-switch.At the repetition rate of 200kHz,the maximum average output power of 11.8 W at wavelength 1064 nm and full width at half maximum of pulses of 16.65ns are achieved at an incident pump power of 27 W,corresponding to an optical conversion efficiency of 43.7% and a slope efficiency of 44.6%,respectively.To the best of our knowledge,this is the highest repetition rate reported on the EO Q-switched laser by using RTP crystals. 展开更多
关键词 ND:YVO4 RTP crystal
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Effect of BaTiO<sub>3</sub>Nanoparticle on Electro-Optical Properties of Polymer Dispersed Liquid Crystal Displays 被引量:1
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作者 Mallikharjuna Rao Darla Sriharsha Hegde Soney Varghese 《Journal of Crystallization Process and Technology》 2014年第1期60-63,共4页
Ferro nematic suspensions are the prominent materials to enhance the electro optical performance of liquid crystal displays. Electro optical properties of polymer dispersed liquid crystal (PDLC) display with the intro... Ferro nematic suspensions are the prominent materials to enhance the electro optical performance of liquid crystal displays. Electro optical properties of polymer dispersed liquid crystal (PDLC) display with the introduction of Barium Titanate nanoparticles have been investigated in this article and it is shown that there is a considerable enhancement in electro-optical response of the displays. The nanoparticles lower the switch-on electric field and thereby increase the optical transmission at certain voltages of the displays. The electro-optical characteristics of the PDLC cells were investigated with a He-Ne laser followed by MatLab calculations. 展开更多
关键词 Polymer Dispersed LIQUID crystal Barium TITANATE LIQUID crystal
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Dichroic Electro-Optical Behavior of Rhenium Sulfide Layered Crystal 被引量:1
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作者 Ching-Hwa Ho 《Crystal Structure Theory and Applications》 2013年第2期65-69,共5页
Dichroic behaviors of layered ReS2 have been characterized using angular dependent polarizedabsorption and resistivity measurements in the van der Waal plane. The angular dependent optical and electrical measurements ... Dichroic behaviors of layered ReS2 have been characterized using angular dependent polarizedabsorption and resistivity measurements in the van der Waal plane. The angular dependent optical and electrical measurements are carried out with angles ranging from θ= 0°(E || b) to θ= 90°(E ^b) with respect to the layer crystal’s b-axis. The angular de pendence of polarized energy gaps of ReS2 shows a sinusoidal variation of energies from ~1.341 eV (E ||b to ~1.391 eV (E ^ b). The experimental evidence of polarized energy gap leaves ReS2 apotential usage for fabrication of a polarized optical switch suitable for polarized optical communication in nearinfrared (NIR) region. Angular dependence of resistivities of ReS2 in?the vander Waal plane has also been evaluated. The relationship of inplane resistivities shows a sinusoidallike variation from θ= 0°(E ||b) to 90°(E ^ b) and repeated periodically to 360°. The experimental results of optical and electrical measurements indicated that ReS2 is not only an opticaldichroic layer but also an electricaldichroism material presented in the layer plane. 展开更多
关键词 TRICLINIC crystalS Optical Materials Polarization-Sensitive Devices
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Magneto and Electro-Optic Intensity Modulator Based on Liquid Crystal and Magnetic Fluid Filled Photonic Crystal Fiber
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作者 Yue-Lan Lu Fei-Ru Wang +4 位作者 Chi Zhang ai-Wen Yin Yu Huang Wei-min Sun Yong-Jun Liu 《Chinese Physics Letters》 SCIE CAS CSCD 2018年第10期36-39,共4页
We propose a novel light intensity modulator based on magnetic fluid and liquid crystal(LC) filled photonic crystal fibers(PCFs). The influences of electric and magnetic fields on the transmission intensity are th... We propose a novel light intensity modulator based on magnetic fluid and liquid crystal(LC) filled photonic crystal fibers(PCFs). The influences of electric and magnetic fields on the transmission intensity are theoretically and experimentally analyzed and investigated. Both the electric and magnetic fields can manipulate the molecular arrangement of LC to array a certain angle without changing the refractive index of the LC. Therefore, light loss in the PCF varies with the electric and magnetic fields whereas the peak wavelengths remain constant. The experimental results show that the transmission intensity decreases with the increase of the electric and magnetic fields. The cut-off electric field is 0.899 V/um at 20 Hz and the cut-off magnetic field is 195 m T. This simple and compacted optical modulator will have a great prospect in sensing applications. 展开更多
关键词 PCF LC Magneto and electro-optic Intensity Modulator Based on Liquid crystal and Magnetic Fluid Filled Photonic crystal Fiber
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Electro-optical properties and(E,F) phase diagram of fluorinated chiral smectic liquid crystals
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作者 R Zgueb H Dhaouadi T Othman 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第10期570-577,共8页
Fluorinated smectic liquid crystals each with a biphenyl benzoate rigid core are investigated. Molecular structures of the studied compounds have difference only in fluorine position and the length of the carbon chain... Fluorinated smectic liquid crystals each with a biphenyl benzoate rigid core are investigated. Molecular structures of the studied compounds have difference only in fluorine position and the length of the carbon chain. Dielectric relaxation study and electro-optical measurements are carried out with the classical SSFLC geometry. The field-induced phase transitions are studied and the(E,T) phase diagram is established. 展开更多
关键词 smectic liquid crystal dielectric relaxation electro-optical properties phase transition (E T)phase diagram
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SYNTHESIS OF DIACETYLENE-CONTAINING COPOLYESTERS AND THEIR DFFECT ON ELECTRO-OPTICAL PROPERTIES OF LIQUID CRYSTALS
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作者 Xiao-fang Chen Yao-wen Bai +4 位作者 Yu-guo Ma Chen-hui Wang Dong Zhang Xin-hua Wan Qi-feng Zhou Department of Polymer Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1999年第2期193-196,共4页
Some diacetylene-containing copolyesters with different ratios of dipropargyl 1,10-decanate anddipropargyl terephthalate were synthesized. Properties of these copolymers were characterized by differentialscanning calo... Some diacetylene-containing copolyesters with different ratios of dipropargyl 1,10-decanate anddipropargyl terephthalate were synthesized. Properties of these copolymers were characterized by differentialscanning calorimetry and polarizing optical microscopy. The copolymer could be cross-linked easily by UVirradiation in a liquid crystal matrix without adding any photoinitiator. The preliminary studies showed thatthe diacetylene-containing polymer network can assist liquid crystal molecules to align with the externalelectric field, thus reducing the response time of display devices. 展开更多
关键词 Diacetylene-containing copolyesters Polymer-stabilized liquid crystals Electo-optical of liquid crystals
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Electro-optical Properties of Liquid Crystal Composite Materials
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作者 SHIYong-ji BAIXu-can 《Semiconductor Photonics and Technology》 CAS 1999年第2期65-73,81,共10页
The liquid crystal composite materials consist of microdroplets of liquid crystals which are spontaneously formed in a matrix of a polymer at the time of its polymerization. The director configuration in liquid crysta... The liquid crystal composite materials consist of microdroplets of liquid crystals which are spontaneously formed in a matrix of a polymer at the time of its polymerization. The director configuration in liquid crystal droplets, the model of orientation of droplets, and the contrast ratios of a cell are investigated. Droplet size, spacing and distribution are readily controlled in these materials to allow optimization of displays based upon electrically controlled light scattering from the liquid crystal droplets. Preliminary experimental and theoretical studies of the light scattering and electro-optic response of new material show that these materials can offer new features suitable for large area displays and light valves. 展开更多
关键词 electro-optic Response Light Scattering Light Valves Liquid crystal Displays Liquid crystal Microdroplets CLC number:TN104.3 Document code:A
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Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy
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作者 Junjie Li Wenbo Yu +5 位作者 Zhenyu Sun Weichen Zheng Liangwei Zhang Yanling Xue Wenning Liu Shoumei Xiong 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS 2025年第1期147-153,共7页
High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile industry.Mg can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress aro... High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile industry.Mg can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated die-castings.Herein,the development of non-heat treatment Al alloys is becoming the hot topic.In addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of castings.To achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and Ce.Their influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic simulation.Our results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased porosity.Meanwhile,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical properties.Subsequent introduction of Ce resulted in the poisoning effect and reduced mechanical properties. 展开更多
关键词 aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment
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Electro-optic Sampling of Proton-bombarded GaP Crystal
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作者 ZHANGDa-ming TIANXiao-jian 《Semiconductor Photonics and Technology》 CAS 2000年第2期77-82,共6页
An electro-optic sampling system utilizing proton-bombarded GaP crystal as probe material has been built. Microwave signals propagating on the indium -tin oxide coplanar waveguide were measured by the system. Measurem... An electro-optic sampling system utilizing proton-bombarded GaP crystal as probe material has been built. Microwave signals propagating on the indium -tin oxide coplanar waveguide were measured by the system. Measurements of bombarded sample gave the resistance value of four orders greater than that of un- bombarded. The electric field shield effect induced by doped GaP was effectively decreased to approximate semi-insulator material. The system has the voltage sensitivity of about 40 mV/21/Hz with the microwave frequency of 1.15 GHz. 展开更多
关键词 Proton bombardment electro-optic sampling Gain-switched semiconductor laser
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Synthesis and electro-optic properties of fluorine-containing polyimide 被引量:1
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作者 邱凤仙 周钰明 +2 位作者 杨艳芳 刘举正 曹庄琪 《Journal of Southeast University(English Edition)》 EI CAS 2007年第1期131-134,共4页
The fluorine-containing organic polymer was synthesized from 3, 3', 4, 4'-Bisphenyltetracarboxylic (BPDA), and 2,2-Bis (3-amino-4-hydroxyyphenyl) hexafluoropropane (6FHP). It is a first-step preparation of a p... The fluorine-containing organic polymer was synthesized from 3, 3', 4, 4'-Bisphenyltetracarboxylic (BPDA), and 2,2-Bis (3-amino-4-hydroxyyphenyl) hexafluoropropane (6FHP). It is a first-step preparation of a preimided hydroxy-containing polyimide, followed by the covalent bonding of an active chromophore, dispersed red 19 (DR19), onto the backbone of the polyimide via the Mitsunobu reaction. The nonlinear optical (NLO) containing polyimide was synthesized. The differential scanning calorimeter (DSC)and thermal gravimetric analysis (TGA) exhibited Tg and the temperature Tg at which 5 % mass losses occurring of polymer were 248 and 309 ℃, respectively. A reflective electro-optic (EO) modulator using this polymer was fabricated. The optical nonlinearities were determined to be d33 = 5. 209×10^-9 esu (poling voltage of 3.6 kV, 205 ℃) and d33 =7. 418×10^-9esu (poling voltage of 3. 8 kV, 210 ℃) by the second harmonic generation method in in-situ condition at a fundamental wavelength of 1 064 nm. The EO coefficients 733 of the polymer layer in the EO modulator were determined to be 2. 182 pm/V (poling voltage of 3.6 kV, 205 ℃) and 3. 107 pm/V (poling voltage of 3.8 kV, 210 ℃) at 1064 nm by an attenuated-total-reflection (ATR) method. 展开更多
关键词 nonlinear optical electro-optic property POLYIMIDE
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A High-Performance Silicon Electro-Optic Phase Modulator with a Triple MOS Capacitor 被引量:2
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作者 黄北举 陈弘达 +2 位作者 刘金彬 顾明 刘海军 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2006年第12期2089-2093,共5页
We propose and analyze a novel Si-based electro-optic modulator with an improved metal-oxide-semiconductor (MOS) capacitor configuration integrated into silicon-on-insulator (SOl). Three gate-oxide layers embedded... We propose and analyze a novel Si-based electro-optic modulator with an improved metal-oxide-semiconductor (MOS) capacitor configuration integrated into silicon-on-insulator (SOl). Three gate-oxide layers embedded in the silicon waveguide constitute a triple MOS capacitor structure, which boosts the modulation efficiency compared with a single MOS capacitor. The simulation results demonstrate that the Vπ Lπ product is 2. 4V · cm. The rise time and fall time of the proposed device are calculated to be 80 and 40ps from the transient response curve, respectively,indicating a bandwidth of 8GHz. The phase shift efficiency and bandwidth can be enhanced by rib width scaling. 展开更多
关键词 carrier accumulation plasma dispersion effect electro-optic phase modulator METAL-OXIDE-SEMICONDUCTOR optoelectronic integrated circuit
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Mach-Zehnder Electro-Optic Polymer Modulator with C orona Poled Core Layer 被引量:3
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作者 杨晓红 杜云 +1 位作者 石志文 吴荣汉 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2001年第8期971-974,共4页
A Mach-Zehnder(MZ) electro-optic(EO) modulator are real iz ed,with three optical layers as polymer materials.The functional layer is the co rona poled crosslinkable polyurethane.The ridge waveguide is fabricated by us... A Mach-Zehnder(MZ) electro-optic(EO) modulator are real iz ed,with three optical layers as polymer materials.The functional layer is the co rona poled crosslinkable polyurethane.The ridge waveguide is fabricated by using the spin-coating,poling,photolithography and oxygen reactive ion etching(RIE) techniques.The mode and the modulation properties of these devices are demonstra ted in a micron control system,while the light source works at the wavelength of 1 31 or 1 55 micron. 展开更多
关键词 poled polymer M Z waveguide electro-optic modulator
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Electro-Optical Effect Measurement of Thin-Film Material Using PM Fiber Mach-Zehnder Interferometer
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作者 屠晓光 赵雷 +4 位作者 陈平 陈少武 左玉华 余金中 王启明 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2007年第7期1012-1016,共5页
A polarization-maintaining (PM) fiber Mach-Zehnder (MZ) interferometer has been established to measure the EO effect of very thin film materials with optical anisotropy. Unlike a common MZ interferometer, all the ... A polarization-maintaining (PM) fiber Mach-Zehnder (MZ) interferometer has been established to measure the EO effect of very thin film materials with optical anisotropy. Unlike a common MZ interferometer, all the components are connected via polarization-maintaining fibers. At the same time, a polarized DFB laser with a maximum power output of 10mW is adopted as the light source to induce a large extinction ratio. Here,we take it to determine the electro-optical coefficients of a very thin superlattice structure with GaAs, KTP, and GaN as comparative samples. The measured EO coefficients show good comparability with the others. 展开更多
关键词 electro-optic effect polarization-maintaining fiber Mach-Zehnder interferometer
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High-power electro-optic switch technology based on novel transparent ceramic 被引量:2
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作者 张学娇 叶青 +1 位作者 瞿荣辉 蔡海文 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第3期185-193,共9页
A novel high-power polarization-independent electro-optic switch technology based on a reciprocal structtire Sagnac interferometer and a transparent quadratic electro-optic ceramic is proposed and analyzed theoretical... A novel high-power polarization-independent electro-optic switch technology based on a reciprocal structtire Sagnac interferometer and a transparent quadratic electro-optic ceramic is proposed and analyzed theoretically and experimentally. The electro-optic ceramic is used as a phase retarder for the clockwise and counter-clockwise polarized light, and their po- larization directions are adjusted to their orthogonal positions by using two half-wave plates. The output light then becomes polarization-independent with respect to the polarization direction of the input light. The switch characteristics, including splitter ratios and polarization states, are theoretically analyzed and simulated in detail by the matrix multiplication method. An experimental setup is built to verify the analysis and experimental results. A new component ceramic is used and a non- polarizing cube beam splitter (NPBS) replaces the beam splitter (BS) to lower the ON/OFF voltage to 305 V and improve the extinction ratio by 2 dB. Finally, the laser-induced damage threshold for the proposed switch is measured and discussed. It is believed that potential applications of this novel polarization-independent electro-optic switch technology will be wide, especially for ultrafast high-power laser systems. 展开更多
关键词 SWITCH electro-optic switch laser damage optoelectronic material
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Recent progress in integrated electro-optic frequency comb generation 被引量:2
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作者 Hao Sun Mostafa K.halil +1 位作者 Zifei Wang Lawrence R.Chen 《Journal of Semiconductors》 EI CAS CSCD 2021年第4期5-16,共12页
Optical frequency combs have emerged as an important tool enabling diverse applications from test-and-measurement,including spectroscopy,metrology,precision distance measurement,sensing,as well as optical and microwav... Optical frequency combs have emerged as an important tool enabling diverse applications from test-and-measurement,including spectroscopy,metrology,precision distance measurement,sensing,as well as optical and microwave waveform synthesis,signal processing,and communications.Several techniques exist to generate optical frequency combs,such as mode-locked lasers,Kerr micro-resonators,and electro-optic modulation.Important characteristics of optical frequency combs include the number of comb lines,their spacing,spectral shape and/or flatness,and intensity noise.While mode-locked lasers and Kerr micro-resonators can be used to obtain a large number of comb lines compared to electro-optic modulation,the latter provides increased flexibility in tuning the comb spacing.For some applications in optical communications and microwave photonics,a high degree of integration may be more desirable over a very large number of comb lines.In this paper,we review recent progress on integrated electro-optic frequency comb generators,including those based on indium phosphide,lithium niobate,and silicon photonics. 展开更多
关键词 electro-optic frequency comb generation integrated photonics silicon photonics integrated lithium niobate indium phosphide
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Organic electro-optic polymer materials and organic-based hybrid electro-optic modulators 被引量:1
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作者 Yan Wang Tongtong Liu +3 位作者 Jiangyi Liu Chuanbo Li Zhuo Chen Shuhui Bo 《Journal of Semiconductors》 EI CAS CSCD 2022年第10期28-38,共11页
High performance electro-optic modulator,as the key device of integrated ultra-wideband optical systems,have be-come the focus of research.Meanwhile,the organic-based hybrid electro-optic modulators,which make full us... High performance electro-optic modulator,as the key device of integrated ultra-wideband optical systems,have be-come the focus of research.Meanwhile,the organic-based hybrid electro-optic modulators,which make full use of the advant-ages of organic electro-optic(OEO)materials(e.g.high electro-optic coefficient,fast response speed,high bandwidth,easy pro-cessing/integration and low cost)have attracted considerable attention.In this paper,we introduce a series of high-perform-ance OEO materials that exhibit good properties in electro-optic activity and thermal stability.In addition,the recent progress of organic-based hybrid electro-optic devices is reviewed,including photonic crystal-organic hybrid(PCOH),silicon-organic hy-brid(SOH)and plasmonic-organic hybrid(POH)modulators.A high-performance integrated optical platform based on OEO ma-terials is a promising solution for growing high speeds and low power consumption in compact sizes. 展开更多
关键词 organic electro-optic materials MODULATOR organic-based hybrid modulator heterogeneous integration
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Investigation of the mode splitting induced by electro-optic birefringence in a vertical-cavity surface-emitting laser by polarized electroluminescence 被引量:1
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作者 章杰 俞金玲 +2 位作者 程树英 赖云锋 陈涌海 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第2期457-460,共4页
The mode splitting induced by electro-optic birefringence in a P-I-N InGaAs/GaAs/A1GaAs vertical-cavity surface- emitting laser (VCSEL) has been studied by polarized electroluminescence (EL) at room temperature. T... The mode splitting induced by electro-optic birefringence in a P-I-N InGaAs/GaAs/A1GaAs vertical-cavity surface- emitting laser (VCSEL) has been studied by polarized electroluminescence (EL) at room temperature. The polarized EL spectra with E||[110] and E || [150] directions, are extracted for different injected currents. The mode splitting of the two orthogonal polarized modes for a VCSEL device is determined, and its value increases linearly with the increasing injected current due to electro-optic birefringence; This article demonstrates that the polarized EL is a powerful tool to study the mode splitting and polarization anisotropy of a VCSEL device. 展开更多
关键词 mode splitting electro-optic birefringence vertical-cavity surface-emitting laser polarized elec- troluminescence
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