Journals >Chinese Journal of Lasers
Contents
1980
Volume: 7 Issue 2
15 Article(s)
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Research Article
Laser Devices and Laser Physics
A 20 years’ survey of laser science and technology in China(Ⅱ)
Ji Zhong, and Qun Li
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 1 (1980)
Two-photon resonance,four-wave mixing difference frequency generation in potassium vapor
Zhou Yinghua, Xia Zhongju, and Wang Yongda
Two-photon resonant four-wave mixing difference frequency generation in potassium vapor has been observed.The infrared wave (ω3) from YAG:Nd3+ laser and the visible wave(ω1) from the tunable dye laser pumped by the second-harmonic of YAG:Nd3+ laser are used as the incident waves.When the energy of the two photons from Two-photon resonant four-wave mixing difference frequency generation in potassium vapor has been observed.The infrared wave (ω3) from YAG:Nd3+ laser and the visible wave(ω1) from the tunable dye laser pumped by the second-harmonic of YAG:Nd3+ laser are used as the incident waves.When the energy of the two photons from dye laser equals to the energy defferenco between the high lying state 13s and the ground stare 4s of the potassium atom,a new 4052 coherent wave (ω4=ω1-ω3) is generated..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 20 (1980)
Zeeman effect in the two frequency laser
Ba Enxu, and Liu Yuzhao
This work deals with the oalculations on complicated Zeeman splittings of the 3S2→2P4 transition in Ne atoms and also with analysis on the conditions for pro- ducing Lamb dip for ]eft- and right handed circular polarized light.This work deals with the oalculations on complicated Zeeman splittings of the 3S2→2P4 transition in Ne atoms and also with analysis on the conditions for pro- ducing Lamb dip for ]eft- and right handed circular polarized light..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 24 (1980)
Experimental study of the active mode-locked TEA CO2 laser
Chai Yinshi, Ying Jinrong, and Niu Wanqing
An experimental study was conducted of the active mode-locking laser utilizing a l meter long photopreionized TEA CO2 device.A Brewster angle aceustooptic loss modulator was employed as the active mode locker within the cavity.Design consideration on experimental apparatus and the measured resuls are described.An experimental study was conducted of the active mode-locking laser utilizing a l meter long photopreionized TEA CO2 device.A Brewster angle aceustooptic loss modulator was employed as the active mode locker within the cavity.Design consideration on experimental apparatus and the measured resuls are described..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 28 (1980)
Investigation on the characteristics of an electron-beam controlled CO2 laser
Zhuang Dounan, Lu Zaitong, and Li Lanying
The pumping model for an electron-beam controlled dischaging laser is described.A cold-cathode electron beam controlled dischaging CO2 laser system with 8 litres of excitation volume was designed on the basis of this model,and its operation eharacteristics are in agreement with the predicted ones.The pumping model for an electron-beam controlled dischaging laser is described.A cold-cathode electron beam controlled dischaging CO2 laser system with 8 litres of excitation volume was designed on the basis of this model,and its operation eharacteristics are in agreement with the predicted ones..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 33 (1980)
Propagation of light near singular axes in laser crystals——The relations between the direotions of singular axes and the negative absorption coefficient α
Fan Junyin, and Lin Fucheng
Calculation of relation between the negative absorption coefficient a and the direction of the singular axes P.Q.has been made quantitatively for lasing condi- tions in Nd:YAP crystal for the first time,and this calculation is based on the complex Fresnel’s equation of the wave normals of light propagation in anisotropCalculation of relation between the negative absorption coefficient a and the direction of the singular axes P.Q.has been made quantitatively for lasing condi- tions in Nd:YAP crystal for the first time,and this calculation is based on the complex Fresnel’s equation of the wave normals of light propagation in anisotropic medium.It is discussed by using this nature of singular axes that a circularly polarized laser beam output can be obtained..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 40 (1980)
A passive mode-locked YAG laser
Chen Shaohe, Chen Lanyong, Lin Kangchun, and Xie Zhiming
An investigation was made of the formation of ultrashort pulse trains in an YAG laser,and the effects on the passive mode locking process of the initial dye absorption coefficient x_o,the saturable power of the dye solution I_s,and the ratio of the beam cross section in the laser medium to the beam cross section in theAn investigation was made of the formation of ultrashort pulse trains in an YAG laser,and the effects on the passive mode locking process of the initial dye absorption coefficient x_o,the saturable power of the dye solution I_s,and the ratio of the beam cross section in the laser medium to the beam cross section in the absorber.The laser under investigation produces bandwidth-limited output pulses at 1.06μm,with spectral profile and temporal profile in Gaussian function.Single pulses can be adjusted from 20ps to 200ps..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 44 (1980)
A N2 laser with double layer preionization
Chui Dafu, Zhang Zhiguo, and Wang Liangzhi
A simple method of double layer preionization was employed in a N2 laser (with four electrodes)excited by a double plate condenser Blumlein system,the output stability has been improved and output power increased.A simple method of double layer preionization was employed in a N2 laser (with four electrodes)excited by a double plate condenser Blumlein system,the output stability has been improved and output power increased..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 49 (1980)
Increase of output power for UV He-Cd laser
Zheng Siding, Qian Hongsheng, Yang Yin, Mo Yingan, and Wu Ghangzheng
Some methods and experimental results for increasing the output power of a 3250 He-Cd laser are presented,monomode output power of about 15m W has been obtained with a 95cm long discharging capillary.It is shown that laser output power can be increased by adding a small quantity of iodine vapor into the He-Cd+ positiveSome methods and experimental results for increasing the output power of a 3250 He-Cd laser are presented,monomode output power of about 15m W has been obtained with a 95cm long discharging capillary.It is shown that laser output power can be increased by adding a small quantity of iodine vapor into the He-Cd+ positive column..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 52 (1980)
Production of a spatial filter with high efficiency and broad dynamical range by using composite hologram and bleaching technique
Zheng Shihai, Dong Bizheng, E Yun, and Yang Keming
A method is described which produces a spatial filter with high efficiency and broad dynamical range by using composite hologram and bleaohing technique.The method was used in processing the defocus blurred images and good results have been obtained.A method is described which produces a spatial filter with high efficiency and broad dynamical range by using composite hologram and bleaohing technique.The method was used in processing the defocus blurred images and good results have been obtained..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 55 (1980)
[in Chinese]
[in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 60 (1980)
[in Chinese]
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Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 61 (1980)
[in Chinese]
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Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 61 (1980)
[in Chinese]
[in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 7, Issue 2, 62 (1980)
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