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ISSN1001-3806 CN51-1125/TN Map

1994 Vol. 18, No. 4

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Visible SCH semiconductor lasers
Wang Xiangwu, Zhang Xingde, Ren Dacui
1994, 18(4): 194-197.
Abstract:
In order to achieve the symmetrical distribution of light field,decrease the divergence of laser beam and increase output power,the visible SCH semiconductor lasers are fabricated.The dependence of laser characteristics on the structure parameters has been theoretically and experimentally studied.The optimum structure parameters are established.
Study of cavity dumping technology for picosecond dye laser
Du Jinglei
1994, 18(4): 198-202.
Abstract:
In this paper, the basic principles of cavity dumping and the cavity dumping for picosecond dye laser are described and anew high frequency acoustooptical pulse modulator for cavity dtimping has been developed.The cavity dumping has been realized in a picosecond dye laser and the tlumping effect is satisfied.
The study of a compact laser diode doppler interference system
Yang An, K Nadajima
1994, 18(4): 202-206.
Abstract:
This paper presents a compact laser diode doppler interference system used in velocity measurement.The velocity measurement accuracy and application of the system are discussed.
1994, 18(4): 206-206.
Abstract:
Research on all-fibre optical heterodyne technique
Xiang Yongjiang
1994, 18(4): 207-211.
Abstract:
The principle and experimental results of all-fibre optical heterodyne system, in which ordinary single mode fibres are used, are presented.Two novel fibre devices, fibre optic frequncy shifter and fibre optic polarization controller, are employed in this system.The principle and design method for the two key devices are described.In addition,this paper gives practical system,selection of electricoptic component,and alignment criterionfor optical configuration in detial.
New advances of laser medicine
Yan Jixiang, Li Jiaze, Gao Chunqing
1994, 18(4): 211-214.
Abstract:
This paper surveys the main advances in this area of laser medicine in recent years.Including that based on "classical mechanism" and based onthe photody-namics.Especially, the application prospect of laser diode in laser medicine is emphaslzes.
Structure features and application of superluminescent diodes
Ma Dongge, Shi Jiawei
1994, 18(4): 214-219.
Abstract:
In recent years, the superluminescent diodes(SLD) have been paid much attention to the applications in fiber optical gyroscope and opticaltime domain reflectometer.This paper describes the structure and main features of superluminescent diodes,outlines the important applications.
1994, 18(4): 219-219.
Abstract:
Research on growth rate uniformity in horizontal MOCVD systems
Liu Guojun, Xu Li, Shi Quanlin, Wang Xixiang, Zhang Qianyong
1994, 18(4): 220-224.
Abstract:
This paper discusses the main factor of affecting growth rate in MOCVD system,such as the flow rate of carriers gas and organometallic source, position of substrate,doping and undoping, etc.The experimental results are discussed and comparedwith other literatures.The lateral uniformity problem has been emphasizes.