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RSS1990 Vol. 14, No. 2
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1990, 14(2): 1-7.
[Abstract]
[PDF 364KB]
Abstract:
A pulsed micro laser with a new working crystal NAB has been developed. Theoretical analyses and calculations on laser threshold value and energy characteristics etc.,as well as,experimental tests have been carried out for comparision of the new NAB micro laser with the Nd:YAG and NdP5O14 micro lasers.Results show that NAB micro laser has lower threshold value, higher energy gain and transformation efficiency. It is expected to be widely used in various fields. The configuration of the device for attaining higher transfer efficiency have also been discussed.
A pulsed micro laser with a new working crystal NAB has been developed. Theoretical analyses and calculations on laser threshold value and energy characteristics etc.,as well as,experimental tests have been carried out for comparision of the new NAB micro laser with the Nd:YAG and NdP5O14 micro lasers.Results show that NAB micro laser has lower threshold value, higher energy gain and transformation efficiency. It is expected to be widely used in various fields. The configuration of the device for attaining higher transfer efficiency have also been discussed.
1990, 14(2): 8-12.
Abstract:
Types of laser protective materials and their principal properties were introduced briefly in this paper. Some questions of the development and their applications were described also.
Types of laser protective materials and their principal properties were introduced briefly in this paper. Some questions of the development and their applications were described also.
1990, 14(2): 13-16.
Abstract:
After reliability test of He-Ne laser has succeeded, the subject combined with practical production has characteristics of high efficency and high speed. This artical has proved the advantages of this test method by using several examples.
After reliability test of He-Ne laser has succeeded, the subject combined with practical production has characteristics of high efficency and high speed. This artical has proved the advantages of this test method by using several examples.
1990, 14(2): 17-21.
Abstract:
This paper described experimental results about a flashlamp-pumped binary-dye laser.The improving lasing properties such as out-put energy and spectrum band are obtained.
This paper described experimental results about a flashlamp-pumped binary-dye laser.The improving lasing properties such as out-put energy and spectrum band are obtained.
1990, 14(2): 22-27.
Abstract:
The carrying ability for rapid dislocation of parts and brake torque for different locking force in laser coordinatograph are analyzed and calculated. Experiments show that measurements agree with the theory. The product developed has been used on the national shooting range.
The carrying ability for rapid dislocation of parts and brake torque for different locking force in laser coordinatograph are analyzed and calculated. Experiments show that measurements agree with the theory. The product developed has been used on the national shooting range.
1990, 14(2): 28-34.
Abstract:
This paper has analysed problems which exist when the military draws up the range index of laser rangefinder, has discussed the method to draw up the range index of the laser rangefinder agaist the objects of high-speed and low-speed according to mission task,and has expounded the keep condition to ensure the range index.
This paper has analysed problems which exist when the military draws up the range index of laser rangefinder, has discussed the method to draw up the range index of the laser rangefinder agaist the objects of high-speed and low-speed according to mission task,and has expounded the keep condition to ensure the range index.
1990, 14(2): 35-39.
Abstract:
A new experimental system of coherent optical communication is recently accomplished at the Guilin Institute of Optical Communications in China.The system is used to transmit TV signal. The receiving sensitivity of the system reaches -56 dBm at transmitting TV signal. It is about 12 to 14 dB increased in the receiving sensitivity as comparing with the direct detection of optical fiber transmission system nowadays.
A new experimental system of coherent optical communication is recently accomplished at the Guilin Institute of Optical Communications in China.The system is used to transmit TV signal. The receiving sensitivity of the system reaches -56 dBm at transmitting TV signal. It is about 12 to 14 dB increased in the receiving sensitivity as comparing with the direct detection of optical fiber transmission system nowadays.
1990, 14(2): 39-42.
Abstract:
The pernicious effects of vignetting spot on the coaxial speckle inference fringes are analysed and a method for eliminating the vignetting spot is given.Comparative experiments have been carried out and results consist with theoretical analysis.
The pernicious effects of vignetting spot on the coaxial speckle inference fringes are analysed and a method for eliminating the vignetting spot is given.Comparative experiments have been carried out and results consist with theoretical analysis.
1990, 14(2): 43-49.
Abstract:
Self-focusing of a high pawer laser beam in the atmosphere and its relations with air-breakdown, Stimulated Raman Scattering (SRS) and thermal blooming are reviewed. The effects on the propagation through the atmosphere and the requests on designing future large practical laser systems are analysed and discussed preliminarily.
Self-focusing of a high pawer laser beam in the atmosphere and its relations with air-breakdown, Stimulated Raman Scattering (SRS) and thermal blooming are reviewed. The effects on the propagation through the atmosphere and the requests on designing future large practical laser systems are analysed and discussed preliminarily.
1990, 14(2): 50-53.
Abstract:
The oscillotion mechanism of red-light laser in the white-light laser of the He-Cd Ⅱ hollow-cathode type is analysed. By means of using super highly pure metal Cd and the strict electric vacunm technique, the lower threshold and higher output power of red-light laser are achieved, and the color characteristics of white-light laser are greatly improved.
The oscillotion mechanism of red-light laser in the white-light laser of the He-Cd Ⅱ hollow-cathode type is analysed. By means of using super highly pure metal Cd and the strict electric vacunm technique, the lower threshold and higher output power of red-light laser are achieved, and the color characteristics of white-light laser are greatly improved.
1990, 14(2): 54-57.
Abstract:
A software of the optimum design of coaxial bi-reflective optical antenna systems is introduced in this paper. This software is very convenient for designers to design and kinds of coaxial bi-reflective optical antenna system.
A software of the optimum design of coaxial bi-reflective optical antenna systems is introduced in this paper. This software is very convenient for designers to design and kinds of coaxial bi-reflective optical antenna system.
1990, 14(2): 58-60.
Abstract:
In this paper, the results of the experiment on tripletube CO2 laser are presented and some problems are preliminarily discussed.
In this paper, the results of the experiment on tripletube CO2 laser are presented and some problems are preliminarily discussed.
1990, 14(2): 61-63.
Abstract:
