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ISSN1001-3806 CN51-1125/TN Map

1990 Vol. 14, No. 4

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The measurement and evaluation of the safe parameter for a hand laser rangefinder
Xu Guidao, Zhou Shuying, Xu Jiemin, Shi Liangshun, Qian Huanwen, Hu Fugen, Zhang Guisu, Wang Denglong, Chen Zhongli
1990, 14(4): 1-4.
Abstract:
The safe parameter of a kind of hand laser rangefinder was determinned and evaluated with measurements and animal experiments, and then possible injury boundary and safe distance are given.
Sound-controlled laser detonators for mines
Gan Jianguo
1990, 14(4): 5-8.
Abstract:
The principle of sound-controlled laser detonators for mines which increase attack width of mines by a factor of four and save mines by a factor of 90% is introduced.
Matrix methods for analysing optical resonators (Part 2)
Liao Yan, Chen Wenyu, Cai Bangwei
1990, 14(4): 9-15.
Abstract:
Telescopic resonator with a thermal lens (TRTL) A typical TRTL is formed by two mirrors with radius of curvature R1, R2 and a telescope composed by two lenses of focal length f1,f2 separated by 1 and an internal thermal lens with variable focal length f. The other parameters are denoted in Fig.
Effacts of injection locking on the performance of optical phase-locked loop
Li Linlin
1990, 14(4): 16-20.
Abstract:
The effects of injection locking on the performance of an optical phase-locked loop are presented.The phase transfer function and the noise properties of an optical phase-locked loop using injectionlocked semiconductor laser as local oscillator are discussed.
The change rule of He-Ne laser output during the igniting procedure
Yang Zhichang, Shan Chenghong
1990, 14(4): 21-27.
Abstract:
The output of He-Ne laser will change with increasing igniting time. By means of many reliability experiments, we proceeded a great deal of data processing by micro-computer and have found the change rule of the long-life He-Ne laser output.
Study of laser detector microwave bias
Zhang Shuren, Zeng Lipeng
1990, 14(4): 28-31.
Abstract:
Through study of laser detector microwave bias, the useful method of microwave bias is given.And the experimental results are given.
Effects on the output beam coherence of the array waveguide CO2 laser due to the fluctuation of the laser amplitude and phase
Yang Suidong, Hou Tianjing, Qiu Qianhua
1990, 14(4): 32-34.
Abstract:
Effects on the output beam coherence of the array waveguide CO2 laser due to the fluctuation of the laser amplitude and phase.
Determine quality of laser stearate soap film crystal (LS) on the quartz slice by means of the positron annihilation life spectroscopy
Shi Zikang, Yu Xianchun, Zheng Guiying
1990, 14(4): 35-40.
Abstract:
In this paper is first repored determination of quality in the LS soap film crystal by means of the positron annihilation life spectroscopy and its result, found technology to make soap film have influence on it, pointed out just heat treatment is a method to improve film quality.
The simple and convenient quantitative method of acceptance range——the extinction test way
Fang Qiwan
1990, 14(4): 40-47.
Abstract:
This article has discussed the basic principle of the extinction method, has analysed the selection of the extinction parameters, has expounded the test steps of the extinction method, and has put forward a method of using the extinction test to determine the meteorological visibility.
Designs of the parallel beam-splitting polarizers
Li Guohua, Li Jizhong, Song Lianke
1990, 14(4): 47-50.
Abstract:
Four types of parallel beam-splitting polarizer are provided using a birefringent crystal. The features of the devices are large displacement, high extinction ratio, high transmittance and small splitting angle. They are expecially designed for the usage of optical switch and modulating systems, and with calcite as an example, the properties of several differet designs are compared.
1990, 14(4): 50-50.
Abstract:
Hiding and seeking technology development tendency
Tan Xianyu
1990, 14(4): 51-54.
Abstract:
In this paper, we base on the vehicles antirader hiding and describe hiding principle and technology, seeking way, development tendency of foreign hiding technology.
Techniques of holographic experiment
Wang Dianmin, Wang Mincao, Ha Liuzhu
1990, 14(4): 55-57.
Abstract:
Four new techniques in holographic experiment are introduced.They are beneficial to researchers in holography.
Investigations of laser alloying with chromium and molybdenum on surface of carbon steel and thermal stability of the alloyed layer
Yang Dehua
1990, 14(4): 58-62.
Abstract:
The layer alloyed with chromium and molybdenum on surface of carbon steel was obtained by using high power CO2 laser in this study. Experimental results show that the distributions of microhardness and compositions in the alloyed layer are uniform. The microhardness of alloyed layer is increased to 2 or 3 times compared with that of carbon steel. Meanwhile the thermal stability of the alloyed layer is obviously higher than that of carbon steel. In addition, the reason for improving these properties has been discussed.
1990, 14(4): 63-63.
Abstract: