期刊文献+
共找到14篇文章
< 1 >
每页显示 20 50 100
Numerical Simulation of External-Cavity Distributed Feedback Semiconductor Laser
1
作者 Tianyu Guan Chaoze Zhang +2 位作者 Yuqin Mao Ligang Huang Tao Zhu 《Optics and Photonics Journal》 2023年第6期109-118,共10页
We propose a theoretical model to describe external-cavity distributed feedback semiconductor lasers and investigate the impact of the number of external feedback points on linewidth and side-mode suppression ratio th... We propose a theoretical model to describe external-cavity distributed feedback semiconductor lasers and investigate the impact of the number of external feedback points on linewidth and side-mode suppression ratio through numerical simulation. The simulation results demonstrate that the linewidth of external-cavity semiconductor lasers can be reduced by increasing the external cavity length and feedback ratio, and adding more external feedback points can further narrow the linewidth and enhance the side mode suppression ratio. This research provides insight into the external cavity distributed feedback mechanism and can guide the design of high-performance external cavity semiconductor lasers. . 展开更多
关键词 external-cavity Distributed Feedback Linewidth Compression Mul-ti-Point Feedback Narrow-Linewidth Laser Semiconductor Laser
下载PDF
Continuous-wave operation of InAs/InP quantum dot tunable external-cavity laser grown by metal-organic chemical vapor deposition 被引量:3
2
作者 Yan Wang Shuai Luo +2 位作者 Haiming Ji Di Qu Yidong Huang 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第1期568-571,共4页
We demonstrate high-performance broadband tunable external-cavity lasers(ECLs) with the metal-organic chemical vapor deposition(MOCVD) grown In As/In P quantum dots(QDs) structures. Without cavity facet coatings, the ... We demonstrate high-performance broadband tunable external-cavity lasers(ECLs) with the metal-organic chemical vapor deposition(MOCVD) grown In As/In P quantum dots(QDs) structures. Without cavity facet coatings, the 3-d B spectral bandwidth of the Fabry–Perot(FP) laser is approximately 10.8 nm, while the tuning bandwidth of ECLs is 45 nm.Combined with the anti-reflection(AR)/high-reflection(HR) facet coating, a 92 nm bandwidth tuning range has been obtained with the wavelength covering from 1414 nm to 1506 nm. In most of the tuning range, the threshold current density is lower than 1.5 k A/cm2. The maximum output power of 6.5 m W was achieved under a 500 m A injection current.All achievements mentioned above were obtained under continuous-wave(CW) mode at room temperature(RT). 展开更多
关键词 InAs/InP quantum dot external-cavity laser continuous-wave operation metal-organic chemical vapor deposition
原文传递
A Broadband Pulsed External-Cavity Quantum Cascade Laser Operating near 6.9μm 被引量:2
3
作者 罗威 段传喜 《Chinese Physics Letters》 SCIE CAS CSCD 2016年第2期55-57,共3页
We report an external cavity quantum cascade laser (EC-QCL) operating near 6.9μm using the Littman Metcalf configuration. The EC-QCL works in a pulsed mode and can be tuned continuously from 1340 to 1640cm^-1 by on... We report an external cavity quantum cascade laser (EC-QCL) operating near 6.9μm using the Littman Metcalf configuration. The EC-QCL works in a pulsed mode and can be tuned continuously from 1340 to 1640cm^-1 by only tilting the tuning mirror. The fine tuning ability of the EC-QCL is demonstrated by measuring the absorption spectrum of water in the ambient air with a lock-in amplifier. 展开更多
关键词 QCL EC in A Broadband Pulsed external-cavity Quantum Cascade Laser Operating near 6.9 of MODE
原文传递
External-cavity birefringence feedback effects of microchip Nd:YAG laser and its application in angle measurement 被引量:2
4
作者 任成 谈宜东 张书练 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第8期3438-3443,共6页
External-cavity birefringence feedback effects of the microchip Nd:YAG laser are presented. When a birefringence element is placed in the external feedback cavity of the laser, two orthogonally polarized laser beams ... External-cavity birefringence feedback effects of the microchip Nd:YAG laser are presented. When a birefringence element is placed in the external feedback cavity of the laser, two orthogonally polarized laser beams with a phase difference are output. The phase difference is twice as large as the phase retardation in the external cavity along the two orthogonal directions. The variable extra-cavity birefringence, caused by rotation of the external-cavity birefringenee element, results in tunable phase difference between the two orthogonally polarized beams. This means that the roll angle information has been translated to phase difference of two output laser beams. A theoretical analysis based on the Fabry-Perot cavity equivalent model and refractive index ellipsoid is presented, which is in good agreement with the experimental results. This phenomenon has potential applications for roll angle measurement. 展开更多
关键词 microchip laser external-cavity birefringence feedback orthogonally polarized lasers angle measurement
原文传递
High power external-cavity surface-emitting laser with front and end pump
5
作者 Lidan Jiang Renjiang Zhu +4 位作者 Maohua Jiang Dingke Zhang Yuting Cui Peng Zhang Yanrong Song 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第8期265-269,共5页
High power optically pumped vertical-external-cavity surface-emitting lasers with front and end pump are re- ported. The gain chip consists of 15 repeats of In0.26GaAs/GaAsP0.02 multiple quantum wells and 30 pairs of ... High power optically pumped vertical-external-cavity surface-emitting lasers with front and end pump are re- ported. The gain chip consists of 15 repeats of In0.26GaAs/GaAsP0.02 multiple quantum wells and 30 pairs of Alo.2GaAs/Alo.98GaAs distributed Bragg reflectors. The maximum output power of 3 W, optical-to-optical conversion efficiency of 22.4%, and slope efficiency of 29.8% are obtained with 5-℃ heatsink temperature under the front pump, while the maximum output power of 1.1 W, optical-to-optical conversion efficiency of 23.2%, and slope efficiency of 30.8% are reached with 5-℃ heatsink temperature under the end pump. Influences of thermal effects on the output power of the laser with front and end pump are discussed. 展开更多
关键词 surface-emitting laser external-cavity high power pump geometry
原文传递
Influence of laser linewidth on external-cavity frequency doubling efficiency of a 1.56 μm master oscillator fiber power amplifier
6
作者 田秀桃 李永民 +1 位作者 刘勤 张宽收 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第6期2324-2327,共4页
By using an external-cavity frequency-doubling master oscillator fiber power amplifier (MOPA), a 700 mW continuous-wave single-frequency laser source at 780 nm is produced. It is shown that the frequency doubling ef... By using an external-cavity frequency-doubling master oscillator fiber power amplifier (MOPA), a 700 mW continuous-wave single-frequency laser source at 780 nm is produced. It is shown that the frequency doubling efficiency is improved when the seed diode laser is optically locked to a resonant frequency of a confocal Fabry-Perot (F-P) cavity. This phenomenon can be attributed to the narrowing of the 1.56 μm laser linewidth and explained by our presented theoretical model. The experimental results are found to be in good agreement with the theoretical predictions. 展开更多
关键词 laser linewidth external-cavity frequency doubling conversion efficiency
原文传递
Design and fabrication of a compact, high-performance interference-filter-based external-cavity diode laser for use in the China Space Station 被引量:1
7
作者 Lingqiang Meng Pengyang Zhao +8 位作者 Fanchao Meng Long Chen Yong Xie Yikun Wang Wei Bian Jianjun Jia Tao Liu Shougang Zhang Jianyu Wang 《Chinese Optics Letters》 SCIE EI CAS CSCD 2022年第2期100-105,共6页
A hertz-linewidth ultra-stable laser(USL), which will be used to detect the clock transition line, in a strontium optical clock will be launched into the China Space Station(CSS) in late 2022. As the core of the USL, ... A hertz-linewidth ultra-stable laser(USL), which will be used to detect the clock transition line, in a strontium optical clock will be launched into the China Space Station(CSS) in late 2022. As the core of the USL, an interference-filter-based externalcavity diode laser(IF-ECDL) was developed. The IF-ECDL has a compact, stable, and environmentally insensitive design.Performances of the IF-ECDL are presented. The developed IF-ECDL can pass the aerospace environmental tests, indicating that the IF-ECDL can be suitable for space missions in the CSS. 展开更多
关键词 external-cavity diode laser interference filter space application
原文传递
External-Cavity Tunable Laser Using MEMS Technology
8
作者 J. Z. Hao X. M. Zhang +1 位作者 C. Lu A. Q. Liu 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期433-434,共2页
This paper introduces a tunable external-cavity diode laser using a MEMS vertical mirror fabricated on a silicon-on-insulator (SOI) wafer. This laser has the merits of simple alignment process, easy integration/packag... This paper introduces a tunable external-cavity diode laser using a MEMS vertical mirror fabricated on a silicon-on-insulator (SOI) wafer. This laser has the merits of simple alignment process, easy integration/packaging, and potentially large wavelength tuning range. 展开更多
关键词 MEMS as in on BE with external-cavity Tunable Laser Using MEMS Technology for MODE of DBM from
原文传递
Influence of Feedback Levels on Polarized Optical Feedback Characteristics in Zeeman-Birefringence Dual Frequency Lasers 被引量:1
9
作者 毛威 张书练 +2 位作者 周鲁飞 刘小艳 王明明 《Chinese Physics Letters》 SCIE CAS CSCD 2007年第3期713-716,共4页
The influence of feedback levels on the intensity and polarization properties of polarized optical feedback in a Zeeman-birefringence dual frequency laser is systematically investigated. By changing the feedback power... The influence of feedback levels on the intensity and polarization properties of polarized optical feedback in a Zeeman-birefringence dual frequency laser is systematically investigated. By changing the feedback power ratio, different feedback levels are obtained. Three distinct regimes of polarized optical feedback effects are found and defined as regimes Ⅰ, Ⅱ and Ⅲ The feedback level boundaries among the regimes are acquired experimentally. The theoretical analysis is presented to be in good agreement with the experimental results. 展开更多
关键词 SELF-MIXING INTERFERENCE external-cavity DIODE
原文传递
Self Mixing Fringes of Vertical-Cavity Surface-Emitting Lasers under Dual Reflector Feedback
10
作者 程翔 张书练 +1 位作者 张连清 谈宜东 《Chinese Physics Letters》 SCIE CAS CSCD 2006年第12期3275-3277,共3页
The self-mixing fringes which shift due to every one-twentieth wavelength displacement of the target are observed. Taking advantage of the dual reflectors in the external cavity of lasers, the resolution of the sensor... The self-mixing fringes which shift due to every one-twentieth wavelength displacement of the target are observed. Taking advantage of the dual reflectors in the external cavity of lasers, the resolution of the sensors has been improved by 10 times. The role of the each reflector has been discussed in detail. 展开更多
关键词 SEMICONDUCTOR-LASERS OPTICAL-FEEDBACK external-cavity DIODE
原文传递
Output Intensity Variations of the Laser Used in a Prism Coupling System and Its Application
11
作者 张小康 廖常俊 刘颂豪 《Chinese Physics Letters》 SCIE CAS CSCD 2005年第12期3071-3073,共3页
The output intensity variations of the laser used in a prism coupling system are observed and found to be induced by the external optical feedback, which comes from the reflection on the prism. The intensity variation... The output intensity variations of the laser used in a prism coupling system are observed and found to be induced by the external optical feedback, which comes from the reflection on the prism. The intensity variations are explained with laser theory. The trough in the intensity variation corresponds to the position of the prism when the output light beam propagates perpendicularly to the prism. Based on the trough a new method for rotating the prism and reading out the step numbers is proposed, by which the angle 0° in the system need not to be calibrated. It is proven by experiment that the new method would improve the accuracy of the refractive index up to ±0.00001 and thickness to ±1 nm. 展开更多
关键词 SELF-MIXING INTERFERENCE SEMICONDUCTOR-LASER OPTICAL FEEDBACK external-cavity
原文传递
Extremely Increasing the Operating Frequency Range of Mode-Locked Hybrid Soliton Pulse Source
12
作者 Nuran Dogru 《Chinese Physics Letters》 SCIE CAS CSCD 2006年第4期838-841,共4页
Numerical simulations show that proper fundamental mode-locking repetition range of hybrid soliton pulse source where transform-limited pulses are obtained is extremely increased with the use of linearly chirped tanh ... Numerical simulations show that proper fundamental mode-locking repetition range of hybrid soliton pulse source where transform-limited pulses are obtained is extremely increased with the use of linearly chirped tanh apodized fibre Bragg grating. Near transform-limited pulses around a system operating frequency of 2.5 GHz. are generated over a frequency range of 1.6 GHz (1.9-3.4 GHz) 展开更多
关键词 GRATING external-cavity LASERS
原文传递
Maximum and Continuous Wavelength Tuning Ranges of a Grating External- cavity Laser Diode
13
作者 LUHong-chang ZHENGChen 《Semiconductor Photonics and Technology》 CAS 1999年第3期129-133,138,共6页
The wavelength tuning ranges of a grating external-cavity laser diode (ECLD) have been studied by the equivalent cavity method. The maximum tuning range (MTR) and the continuous tuning range (CTR), which are related t... The wavelength tuning ranges of a grating external-cavity laser diode (ECLD) have been studied by the equivalent cavity method. The maximum tuning range (MTR) and the continuous tuning range (CTR), which are related to the maximum and the minimum threshold carrier densities, are deduced from the threshold condition. We define a ratio of the CTR to the MTR. This ratio is only determined by the reflectivities of the external and internal facets of the ECLD. The analysis shows that there is an appropriate combination of the external and internal-cavity reflectivities to obtain a given CTR in the design of an ECLD. 展开更多
关键词 external-cavity Laser Diode REFLECTIVITY Tuning CLC number: TN248.4 Document code:A
下载PDF
Wide and fast-frequency tuning for a stabilized diode laser
14
作者 Yunfei Wang Yuqing Li +6 位作者 Jizhou Wu Wenliang Liu Peng Li Yongming Fu Jie Ma Liantuan Xiao Suotang Jia 《Frontiers of physics》 SCIE CSCD 2022年第2期1-5,共5页
External-cavity diode laser(ECDL)has important applications in many fundamental and applied researches.Here we report a method to fast and widely tune the frequency of a stabilized ECDL.The beat frequency between the ... External-cavity diode laser(ECDL)has important applications in many fundamental and applied researches.Here we report a method to fast and widely tune the frequency of a stabilized ECDL.The beat frequency between the ECDL and a frequency-locked reference laser is identified by the voltagecontrolled oscillator contained in a phase detector,whose output voltage is subtracted from the flexibly controlled PC signal to generate an error signal for stabilizing the ECDL.The output frequency of the stabilized ECDL can be shifted at a short characteristic time of∼150µs within a range of∼620 MHz.The wide and fast-frequency tuning achieved by our method is compared with other previous works.We demonstrated the performance of our method by the efficient sub-Doppler cooling of Cs atoms with the temperature as low as 6µK. 展开更多
关键词 external-cavity diode laser frequency stabilization laser cooling interaction of laser with atoms
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部