Journals >Chinese Journal of Lasers
Contents
1979
Volume: 6 Issue 12
18 Article(s)
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Research Article
Langmuir flow effect in a ring cavity during the light deflection
Liao Fuzhong
Langmuir flow effect in a D. C. discharged ring laser is one of the important factors causing zero drift. The employment of linear cavity tubes in the ring cavity is discussed.Langmuir flow effect in a D. C. discharged ring laser is one of the important factors causing zero drift. The employment of linear cavity tubes in the ring cavity is discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 1 (1979)
CW operation over 5000 hours of GaAs/AlGaAs DH laser at room temperature
[in Chinese]
The configuration and technology for proton bombardment stripe geometric GaAs-GaAlAs DH laser is described briefly. The performances of DH laser under DC forward current were measured and analysed. The threshold current of most lasers is 50-150 mA. Differential quantum efficiency ηd is 30-70%. Some lasers operate in siThe configuration and technology for proton bombardment stripe geometric GaAs-GaAlAs DH laser is described briefly. The performances of DH laser under DC forward current were measured and analysed. The threshold current of most lasers is 50-150 mA. Differential quantum efficiency ηd is 30-70%. Some lasers operate in single transverse mode and near single longitudinal mode. The degradation properties were studied and the lifetime for some lasers are over 5000 hours..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 8 (1979)
Optically pumped methylfluoride far infrared laser
Fu Ensheng, Cai Weiquan, Wang Zhongzi, Wu Tieqiang, and Liu Yashu
The parameters of the optically pumped far infrared laser have been calculated. The configuration and oscillation characteristics of the first optically pumped far infrared laser in our country are described. Transmissivity of far infrared optical materials at 496μm, such as fused quartz, germanium, silicon, polyethyleThe parameters of the optically pumped far infrared laser have been calculated. The configuration and oscillation characteristics of the first optically pumped far infrared laser in our country are described. Transmissivity of far infrared optical materials at 496μm, such as fused quartz, germanium, silicon, polyethylene, polytetra-fluoroethylene and all kinds of papers etc have been measured by the methylfluoride far infrared laser and the data are given..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 12 (1979)
Neodymium pentaphosphate laser
He Huijuan, Lu Guoxian, Zhao Meicun, and Zhao Longxin
The experimental setup, test method and laser performances at room temperature for a neodymium pentaphosphate laser with a single transverse mode longitudinally pumped by a dye laser at 0.58μm are described. The optical slope efficiency is -10%, threshold energy for single transverse mode is -40μj. Oscillation thresholThe experimental setup, test method and laser performances at room temperature for a neodymium pentaphosphate laser with a single transverse mode longitudinally pumped by a dye laser at 0.58μm are described. The optical slope efficiency is -10%, threshold energy for single transverse mode is -40μj. Oscillation threshold for single mode of longitudinal pumping was estimated with a simple computer model. They agree each other within the experimental error of 10%. A single pulse without Q-switching can be obtained by appropriately varying the cavity parameters..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 16 (1979)
Investigation on atmospheric pulsed N2 laser
Lu Tongxin, Zhao Xianzhang, Zhai Linhua, and Lu Binson
A simple high repetition rate molecular N2 laser is described. Experimental results for the laser operated at I atm. are given. The dependence of electrode spacing on the threshold charging voltage were measured. It was found by the experimental investigation on relations between the output power and the charging voltaA simple high repetition rate molecular N2 laser is described. Experimental results for the laser operated at I atm. are given. The dependence of electrode spacing on the threshold charging voltage were measured. It was found by the experimental investigation on relations between the output power and the charging voltage with different electrode spacing (0.8-2.2mm) that a certain output power can be obtained at low operation voltage with narrow spacings. Many kinds of dyes were pumped to produce laser output at the voltage of 8kV..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 20 (1979)
Cryptocyanine solution as a passive Q-switch in ruby laser
Zhao Yanzeng, Wu Shaoming, Jin Huishu, Xie Weiguang, and Hao Nanjun
The experimental investigations on Q-switching of a ruby laser system by cryptocyanine are reported: 1) The dependence of output characteristics on dye concentration and other parameters of the laser cavity, 2) the dependence of output energy on temperature and solvent of the dye, 3) the influences of temperature, solvThe experimental investigations on Q-switching of a ruby laser system by cryptocyanine are reported: 1) The dependence of output characteristics on dye concentration and other parameters of the laser cavity, 2) the dependence of output energy on temperature and solvent of the dye, 3) the influences of temperature, solvent and impurity content on the optical bleaching of the dye solution. Theoretical analysis and numerical tests are made for the third problem on the basis of the experiments..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 23 (1979)
Influences of electric domains on the optical homogeneity and electro-optic effect in LiNbO3 crystals
Zhang Xinkui, Sheng Huimin, Xu Ziran, and Zhou Yifeng
Influences of electric domains on the optical homogeneity and electro-optic properties are discussed for the purpose of improving crystal quality and performances of laser devices. The extinction ratio at dynamic and static states are discussed at first, then the influences of the electric domains on the optical homogeInfluences of electric domains on the optical homogeneity and electro-optic properties are discussed for the purpose of improving crystal quality and performances of laser devices. The extinction ratio at dynamic and static states are discussed at first, then the influences of the electric domains on the optical homogeneity and the Pockell’s effect..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 29 (1979)
Nanosecond pulse trains obtained with the method of“pruning”the intracavity pulse
Li Qun, Cui Junwen, Zheng Yuxia, and Hui Lingkai
The method of selectively "pruning" the intraeavity signal is employed to produce a clipped pulse inside the cavity. The cavity subsequently behaves as a regenerative oscillator through amplification of this clipped pulse. Nanosecond pulse trains have been obtained with this technique.The method of selectively "pruning" the intraeavity signal is employed to produce a clipped pulse inside the cavity. The cavity subsequently behaves as a regenerative oscillator through amplification of this clipped pulse. Nanosecond pulse trains have been obtained with this technique..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 34 (1979)
Magneto-optic isolator with 60 mm aperture
Lin Lihuang, Zhao Qinchun, and Kang Yuying
The technique of obtaining a 3×10^4 Gauss pulsed magnetic field is described in detail and experimental results of 1.06μm, 60mm magneto-optic isolators are given. It had been measured that when a multi-layer dielectric film polarizor was used, the extinction ratio of the magneto-optic isolators was larger than 5&#The technique of obtaining a 3×10^4 Gauss pulsed magnetic field is described in detail and experimental results of 1.06μm, 60mm magneto-optic isolators are given. It had been measured that when a multi-layer dielectric film polarizor was used, the extinction ratio of the magneto-optic isolators was larger than 5×10^2..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 36 (1979)
Effects of coherence for recording light in reconstruction on holographic F-T spectroscopy
Xie Jianping, and Bai Guiru
The effects are considered of spectral bandwidth and slit width on holographic Fourier-trasnform spectrum with quasi-monochromatic light illumination in using the Fourier-transform method. Theoretical analysis shows that the original distribution of spectral intensities is changed in the process.The effects are considered of spectral bandwidth and slit width on holographic Fourier-trasnform spectrum with quasi-monochromatic light illumination in using the Fourier-transform method. Theoretical analysis shows that the original distribution of spectral intensities is changed in the process..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 40 (1979)
Progress in coaxial pulsed xenon flashlamps
Tsa Guigen
Development process of coaxial pulsed xenon flashlamps both at home and abroad is reviewed. Configuration, test of performances and results of coaxial pulsed xenon flashlamps and comparison with linear pulsed xenon flashlamps are given.Development process of coaxial pulsed xenon flashlamps both at home and abroad is reviewed. Configuration, test of performances and results of coaxial pulsed xenon flashlamps and comparison with linear pulsed xenon flashlamps are given..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 44 (1979)
Evaporation of malignant tumour by CO2 laser
Liu Demin, Yang Xuxia, and Wei Xiubin
73 eases of malignant tumour were cured by an adjustable three folded CW sealed-off CO2 laser with a power density of 105-333 W/cm2 at the "knife head". The 2-year survival is 76.7 %. Clinical practice shows that laser evaporation of malignant tumour do not results in sputter ing and proliferation of cancer c73 eases of malignant tumour were cured by an adjustable three folded CW sealed-off CO2 laser with a power density of 105-333 W/cm2 at the "knife head". The 2-year survival is 76.7 %. Clinical practice shows that laser evaporation of malignant tumour do not results in sputter ing and proliferation of cancer cells, and it is also effective for the later period hopeless cases, so it has advantages in comparison with conventional treatment methods..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 52 (1979)
[in Chinese]
[in Chinese], and [in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 56 (1979)
Rapid Communications
[in Chinese]
[in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 57 (1979)
[in Chinese]
[in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 57 (1979)
[in Chinese]
[in Chinese], [in Chinese], and [in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 12, 58 (1979)
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