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RSS1989 Vol. 13, No. 6
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1989, 13(6): 1-4.
[Abstract]
[PDF 225KB]
Abstract:
The design and adjustment of a miniaturized all solidstate circuit RF CO2 waveguide laser power supply is discussed in detail.Maximal output power of the power supply is 160 W,with frequency of 120 MHz in continuous wave mode and modulated frequency is 0 to 10 kHz,with rectangular wave width continually adjustable.
The design and adjustment of a miniaturized all solidstate circuit RF CO2 waveguide laser power supply is discussed in detail.Maximal output power of the power supply is 160 W,with frequency of 120 MHz in continuous wave mode and modulated frequency is 0 to 10 kHz,with rectangular wave width continually adjustable.
1989, 13(6): 5-10.
Abstract:
The phase modulation properties of an optical phaselocked loop(OPLL) type opto-electrical feedback semiconductor laser (LD) are presented.The oscillation in the curves of phase modulation is studied specially.The reasons and the methods for the suppression of the oscillation are given.
The phase modulation properties of an optical phaselocked loop(OPLL) type opto-electrical feedback semiconductor laser (LD) are presented.The oscillation in the curves of phase modulation is studied specially.The reasons and the methods for the suppression of the oscillation are given.
1989, 13(6): 11-17.
Abstract:
The research in laser welding art of high-melting metal parts and applications is reported.The welding between tungstentungsten,molybdenum-molybdenum,tungsten-molybdenum,tungstentantalum,molybdenum-tantalum and so on has been realized successfully with laser welding art,and these results are satisfactory.
The research in laser welding art of high-melting metal parts and applications is reported.The welding between tungstentungsten,molybdenum-molybdenum,tungsten-molybdenum,tungstentantalum,molybdenum-tantalum and so on has been realized successfully with laser welding art,and these results are satisfactory.
1989, 13(6): 18-22.
Abstract:
The airborne laser rangefinder can offer an accurate and economical solution for low altitude delivery of balls.Recommendations for safety precautions and aircraft window are also made.
The airborne laser rangefinder can offer an accurate and economical solution for low altitude delivery of balls.Recommendations for safety precautions and aircraft window are also made.
1989, 13(6): 23-29.
Abstract:
The principle of optical fiber holography and a series of technical projects up to date at home and abroad are introduced.The application prospect of optical fiber holography is described in brief.
The principle of optical fiber holography and a series of technical projects up to date at home and abroad are introduced.The application prospect of optical fiber holography is described in brief.
1989, 13(6): 30-33.
Abstract:
Making use of a XeCl laser operating at 308nm,with 50～100ns pulsewidth and 20MW peak power output,203 spots of white pig skin were irradiated in five dosage groups from 38.8 to 134.3mJ/cm2.The erythema rates were 11.8～98.0% relevantly.By iterated weighted linear regression Bliss method analysis a MRD50 73.03mJ/cm2 was obtained.
Making use of a XeCl laser operating at 308nm,with 50～100ns pulsewidth and 20MW peak power output,203 spots of white pig skin were irradiated in five dosage groups from 38.8 to 134.3mJ/cm2.The erythema rates were 11.8～98.0% relevantly.By iterated weighted linear regression Bliss method analysis a MRD50 73.03mJ/cm2 was obtained.
1989, 13(6): 33-40.
Abstract:
The design of depolarized anti-reflection coating in operating wavelength A of the two often used film systems of λ/4-λ/2 -λ/4 and λ/4-λ/4 at the angle of incidence φ045°is described.
The design of depolarized anti-reflection coating in operating wavelength A of the two often used film systems of λ/4-λ/2 -λ/4 and λ/4-λ/4 at the angle of incidence φ045°is described.
1989, 13(6): 41-43.
Abstract:
The polarization characteristics of 2.7110μm,2.7299μm,and 2.7950μm laser emissions oscillated simultaneously in 10 at% Er3+ ion doped a axis YAlO3 laser have been investigated experimentally.It has been found that the 2.7110μm and 2.7950μm laser emissions are polarized with its E vector parallel to crystallo,gra-phic b axis.While 2.7299 μm laser emission is partially polarized with the long axis of ellipse parallel to crystallographic c axis.The output characteristics of these laser emissions are also given in this paper.
The polarization characteristics of 2.7110μm,2.7299μm,and 2.7950μm laser emissions oscillated simultaneously in 10 at% Er3+ ion doped a axis YAlO3 laser have been investigated experimentally.It has been found that the 2.7110μm and 2.7950μm laser emissions are polarized with its E vector parallel to crystallo,gra-phic b axis.While 2.7299 μm laser emission is partially polarized with the long axis of ellipse parallel to crystallographic c axis.The output characteristics of these laser emissions are also given in this paper.
1989, 13(6): 44-48.
Abstract:
The heat-exchanger used in cooling 100 W Nd:YAG laser is introduced.In this paper the thermodynamical computation,mechanical structure,experiment and application on the heat-exchanger are described.
The heat-exchanger used in cooling 100 W Nd:YAG laser is introduced.In this paper the thermodynamical computation,mechanical structure,experiment and application on the heat-exchanger are described.
1989, 13(6): 49-52.
Abstract:
The forms and functions of the modulating grids for the evaporating particle beam during the evaporation are discussed.The relationship among the evaporating rate,the modulating coefficient and the thickness of the depositing film is analysesed at the same time.An applied example of stabilizing the evaporating rate with the modulating grid is given.Some points to be noted in practice is also pointed out.
The forms and functions of the modulating grids for the evaporating particle beam during the evaporation are discussed.The relationship among the evaporating rate,the modulating coefficient and the thickness of the depositing film is analysesed at the same time.An applied example of stabilizing the evaporating rate with the modulating grid is given.Some points to be noted in practice is also pointed out.
1989, 13(6): 53-56.
Abstract:
A method of deducing the formula for c a 1 culat ing the output resistance and the current stability of the current stabjlity at the constant current laser pump source is represented.The influence of temperature on the output current is discussed.
A method of deducing the formula for c a 1 culat ing the output resistance and the current stability of the current stabjlity at the constant current laser pump source is represented.The influence of temperature on the output current is discussed.
1989, 13(6): 57-59.
Abstract:
A laser charging power supply and its control circuit consisting of a piece of IC,a transistor and a transformer are described,This power supply can achieve charging 10 times per second,and provide 5V power for range counter.The board size is about 40 mm×50mm and the total weight only 40g.
A laser charging power supply and its control circuit consisting of a piece of IC,a transistor and a transformer are described,This power supply can achieve charging 10 times per second,and provide 5V power for range counter.The board size is about 40 mm×50mm and the total weight only 40g.
