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RSS1990 Vol. 14, No. 4
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1990, 14(4): 1-4.
[Abstract]
[PDF 219KB]
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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
Through study of laser detector microwave bias, the useful method of microwave bias is given.And the experimental results are given.
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.
Effects on the output beam coherence of the array waveguide CO2 laser due to the fluctuation of the laser amplitude and phase.
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.
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.
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.
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.
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.
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): 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.
In this paper, we base on the vehicles antirader hiding and describe hiding principle and technology, seeking way, development tendency of foreign hiding technology.
1990, 14(4): 55-57.
Abstract:
Four new techniques in holographic experiment are introduced.They are beneficial to researchers in holography.
Four new techniques in holographic experiment are introduced.They are beneficial to researchers in holography.
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.
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.
