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Picosecond optical pulses generation from actively mode-locked semiconductor lasers in an external cavity 外腔内主动锁模半导体激光器产生皮秒光脉冲
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294756
Fengzhen Guo
{"title":"Picosecond optical pulses generation from actively mode-locked semiconductor lasers in an external cavity","authors":"Fengzhen Guo","doi":"10.1117/12.2294756","DOIUrl":"https://doi.org/10.1117/12.2294756","url":null,"abstract":"We report the observation of 17 ps optical pulses from actively mode-locked BCS laser diode in an external resonator. Repetition frequency up to 458. 5MHz. The optimal active mode- locked conditions and the dependence of the pulse width on external cavity will be discussed.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124827945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compression of YAG mode-locked optical pulses and its application in microwave measurements YAG锁模光脉冲的压缩及其在微波测量中的应用
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294692
Z. Zhu
{"title":"Compression of YAG mode-locked optical pulses and its application in microwave measurements","authors":"Z. Zhu","doi":"10.1117/12.2294692","DOIUrl":"https://doi.org/10.1117/12.2294692","url":null,"abstract":"The optical pulses from a cw mode-locked Nd:YAG laser are compressed from 100ps down to 3ps by using a single -mode optical fiber and a grating dispersion delay line. The compressed pulses are successfully used to detect the standing-wave in GaAs CPW (coplanar waveguide) in utilizing the electro-optical probing technique.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125438548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coarse grating precision displacement measuring system with opto-scanner 带光扫描仪的粗光栅精密位移测量系统
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294703
Xiang-hui Yuan
{"title":"Coarse grating precision displacement measuring system with opto-scanner","authors":"Xiang-hui Yuan","doi":"10.1117/12.2294703","DOIUrl":"https://doi.org/10.1117/12.2294703","url":null,"abstract":"A coarse grating precision displacement measuring system is described in the paper. The system consists of an opto-scanner used as a displacement sensor, a simple optical system, a large pitch reflecting coarse grating (X=0.635mm) and signal processing circuits etc. After describing the opto-scanner briefly, the paper expounds the principle of the system, the schematic circuits and the theory of dynamic phase discriminating and subdivision. Experiment results is satisfactory.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115203059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Some recent progresses on opto-electronics in China 中国光电子学的最新进展
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294639
Daheng Wang
{"title":"Some recent progresses on opto-electronics in China","authors":"Daheng Wang","doi":"10.1117/12.2294639","DOIUrl":"https://doi.org/10.1117/12.2294639","url":null,"abstract":"A brief account on some of recent developments on opto-electronics and relevant subjects in China is given. Topics include opto-electronic systems, opto-electronic materials and devices, opto -electronic integrating technology, image converters and streak camera tubes, optical information processing, special laser systems and ultra-short laser pulses, optical chaos, fiber optics etc.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114264279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of 1-MeV electron irradiation on the AlGa/GaAs lieterof ace solar cell 1-MeV电子辐照对ace太阳能电池AlGa/GaAs性能的影响
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294648
Z. Wu
{"title":"Effect of 1-MeV electron irradiation on the AlGa/GaAs lieterof ace solar cell","authors":"Z. Wu","doi":"10.1117/12.2294648","DOIUrl":"https://doi.org/10.1117/12.2294648","url":null,"abstract":"The change of performance of AlGaAs/GaAs heteroface solar cell before and after irradiation has been studied by experiments and numerical fitting. The major reasons for the degradation of cell performance are discussed, and a method for improving the irradiation resistance of the cell is proposed.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122134336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Output characteristics of a stable resonator for a transverse: flow CW CO2 laser 横向流连续波CO2激光器稳定谐振腔的输出特性
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294743
G. Rabczuk
{"title":"Output characteristics of a stable resonator for a transverse: flow CW CO2 laser","authors":"G. Rabczuk","doi":"10.1117/12.2294743","DOIUrl":"https://doi.org/10.1117/12.2294743","url":null,"abstract":"The Kirchhoff-Fresnel diffraction integrals for the stable resonator with nonlinear gain medium have been solved in order to specify conditions for fundamental mode ope- ration of a 1 kW transverse - flow CO2 laser. The basic output characteristics such as the beam intensity profile and the laser output power for the different resonator geometries are presented in the paper.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128324573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Fabrication and characteristics of 1.3 Urn InGaAsp-InP large optical cavity lasers 1.3 Urn InGaAsp-InP大光腔激光器的制备与特性
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294755
J. Zhong
{"title":"Fabrication and characteristics of 1.3 Urn InGaAsp-InP large optical cavity lasers","authors":"J. Zhong","doi":"10.1117/12.2294755","DOIUrl":"https://doi.org/10.1117/12.2294755","url":null,"abstract":"Analysing in InGaAsP-InP semiconductor lasers the effects of carrier leakage, non-radiative Auger electron process, inter-valence-band absorption as well as lattice mismatch on lasing characteristics, we have successfully designed and perfectly grown by a modified LPE technique a large optical cavity (LOC) structure in order to obtain the 1. 3 u m InGaAsP-InP lasers with low threshold current density, high output power and high characteristic temperature (To). We have also optimized the LPE procedure and diode-making process which accrue benefits in improving performances of, the devices. The lasers exhibit fairly low threshold current density 5 KA / cm for broad area devices), high output power (up to 3 W in pulsed operation) with high external differential quantum efficiency and high characteristic temperature (T0=150K). It is evident that the quaternary system LOC structure provides a laser which is superior to a conventional DH device.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124600508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An experimental study on photon noise limited wavefront sensor 光子噪声受限波前传感器的实验研究
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294803
G. Cao
{"title":"An experimental study on photon noise limited wavefront sensor","authors":"G. Cao","doi":"10.1117/12.2294803","DOIUrl":"https://doi.org/10.1117/12.2294803","url":null,"abstract":"An experimental study on the Hartmann type wavefront tilt sensor is carried out at photon noise limitation. The experimental results and analyses show that A/10 sensitivity of wavefront tilt detection for space objects with about 8th astro- nomical magnitude within 1 ms of time has been achieved. An algorithm and computer program related to the luminous flux and corresponding photo-electron rate for wavefront sensor based on photon counting technique has been established and verified by experiments.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129291218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Measurement of the response time of ultrafast photoelectric detectors and dispersive broadening effect of connector with picosecond photoconductive sampling techniques 用皮秒光导采样技术测量超快光电探测器的响应时间和连接器的色散展宽效应
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294718
S. Yuan
{"title":"Measurement of the response time of ultrafast photoelectric detectors and dispersive broadening effect of connector with picosecond photoconductive sampling techniques","authors":"S. Yuan","doi":"10.1117/12.2294718","DOIUrl":"https://doi.org/10.1117/12.2294718","url":null,"abstract":"For measured the response time of ultrafast detectors and some material, we have made one picosecond photoconductive sampling system, it consists of a mode-locked dye laser sysnchronously pumped by a mode -locked argon ion laser and a photoconductive switch using the SOS as substrate. This system has demonstrated a temporal reslution. of under 7 ps, offering a sensitivity of l0 uv","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123845148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of theory and experiment on signal to noise ratio (SNR) in magneto-optic disc readout system 磁光盘读出系统信噪比的理论与实验研究
Marketplace for Industrial Lasers Pub Date : 1990-07-01 DOI: 10.1117/12.2294874
R. Yu
{"title":"Study of theory and experiment on signal to noise ratio (SNR) in magneto-optic disc readout system","authors":"R. Yu","doi":"10.1117/12.2294874","DOIUrl":"https://doi.org/10.1117/12.2294874","url":null,"abstract":"In magneto-optic storage, increasing of SNR in readout system is pragmatically one of the key techniques. This paper analyzes the signal and noise sources in readout system, puts forward the concept of optimum SNR, sets up analytical-function expression of SNR under the action of complex factors, and obtains some important results. It provides the basis for optimizing system. Theoretic analysis is identical with experiment results.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124251958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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