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Journals >
Chinese Journal of Lasers
Contents
1986
Volume: 13 Issue 6
19 Article(s)
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Laser Devices and Laser Physics
[in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 1 (1986)
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Relative distribution at focal plane of low-order modes for Gaussian laser beams
Cheng Zhaogu, and Wang Runwen
Analytic resolution for relative energy distribution at focal plane of low-order modes for Gaussian laser beams is given. The results are compared with the focal properties at far-field of single mode light for unstable cavity with different magnification M. With. 80% of total laser energy at focal plane as the united
Analytic resolution for relative energy distribution at focal plane of low-order modes for Gaussian laser beams is given. The results are compared with the focal properties at far-field of single mode light for unstable cavity with different magnification M. With. 80% of total laser energy at focal plane as the united criterion of beam divergence, calculation indicates that with stable cavity for mode-selection, one can obtain good beam quality which may be close, even superior, to that for mode-selection for unstable cavity under some conditions. Moreover, the stable cavity construction is simple, the cavity is more stable and the electro-optic efficiency is high as well..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 321 (1986)
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Optimum output power of a self-sustained discharge transverse flow CO
2
laser
Chu Zexiang, Chen Liyin, and Wu Zhongxiang
The influence of physical and construction parameters, such as the shape of discharge region, the position of cavity, the size and coupling of mirrors and the velocity of flow gas etc., on the output power of a transverse flow CO2 laser are investigated. Some regular results have been obtained which are useful in laser
The influence of physical and construction parameters, such as the shape of discharge region, the position of cavity, the size and coupling of mirrors and the velocity of flow gas etc., on the output power of a transverse flow CO2 laser are investigated. Some regular results have been obtained which are useful in laser design and experimental work..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 328 (1986)
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Self-heated 20 W discharge copper vapor laser
Liang Baogen, Fang Wuji, Zhang Binyuan, Han Shaoqin, Yin Xianhua, and Cui Jianli
Output characteristics of our self-heated discharge dopper vapor laser arc reported. The maximum average power is 20.5 W with an efficiency of 1.5%. Luminescence performances of the device are measured and discussed.
Output characteristics of our self-heated discharge dopper vapor laser arc reported. The maximum average power is 20.5 W with an efficiency of 1.5%. Luminescence performances of the device are measured and discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 334 (1986)
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UV nitrogen laser using hydrogen thyratron as switch
Ou Zhenya, Yang Liming, and Song Zhanxia
An UV nitrogen laser, which uses domestic hydrogen thyratron as switch and isotope as preionizer, is reported. The maximum pulse energy is 5mJ the time delay jitter is ±1 ns, and energy stability for single laser pulse is 5%.
An UV nitrogen laser, which uses domestic hydrogen thyratron as switch and isotope as preionizer, is reported. The maximum pulse energy is 5mJ the time delay jitter is ±1 ns, and energy stability for single laser pulse is 5%..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 338 (1986)
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A method of searching for working materials of optically pumped FIR lasers
Xu Fuyong, Chen Menyao, Zhao Keyu, and Du Li
The mechanism of the known working materials for optically pumped FIB lasers is explained on the basis of the physical model of di-group vibration and linear tri-group vibration. Mathematical derivation shows a fairly good result. Based on this result a method of searching for working materials of optically pumped FIB
The mechanism of the known working materials for optically pumped FIB lasers is explained on the basis of the physical model of di-group vibration and linear tri-group vibration. Mathematical derivation shows a fairly good result. Based on this result a method of searching for working materials of optically pumped FIB lasers is obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 341 (1986)
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Laser-excited fluorencence spectra of OH radicals in C
2
H
2
/air flame
Wang Dadi, and Jiang Zhankui
Laser-excited UV fluorescence spectra of OH radicals at transition in C2H2/air flame have been measured. Airlines in 0-0, 1-0, 2-1 bands obtained are in very good agreement with those by other methods, thus the present work provides useful data for temperature detection of flame. We have also determined the OH concentr
Laser-excited UV fluorescence spectra of OH radicals at transition in C2H2/air flame have been measured. Airlines in 0-0, 1-0, 2-1 bands obtained are in very good agreement with those by other methods, thus the present work provides useful data for temperature detection of flame. We have also determined the OH concentration distribution at different heights of the flame..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 348 (1986)
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Diode laser derivative spectroscopic technique and study of CH
3
CN ν
4
band
Yang Xueming, Zhu Qingshi, Shen Zhiye, and Zhang Cunhao
Diode laser derivative spectroscopy of CH3 ON v4 band is reported here for the first time. About 120 lines of v4 band of the molecule were recorded by means of the second order derivative spectroscopic technique. With an improved least square fitting technique, improved parameters of v4 band were obtained. And some pro
Diode laser derivative spectroscopy of CH3 ON v4 band is reported here for the first time. About 120 lines of v4 band of the molecule were recorded by means of the second order derivative spectroscopic technique. With an improved least square fitting technique, improved parameters of v4 band were obtained. And some properties of diode derivative spectrosc-copic technique were discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 351 (1986)
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Wavefront deviation measurement of Fourier-transform lenses
Xu Deyan
The wavefront deviations of domestic various Fourier transform lenses are given with shearing interferemetry. Two of them are verified with a Zygo interferometer.
The wavefront deviations of domestic various Fourier transform lenses are given with shearing interferemetry. Two of them are verified with a Zygo interferometer..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 356 (1986)
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Experimental study of stimulated Raman scattering of high pressure H
2
frequency shifter
Gao Guochang, Li Rongpiny, Guo Ningning, Gao Wenbin, Chen Junde, and Lu Shiping
Experimental setup and results of BS-1 model high efficiency high pressure H2 Eaman shifter are presented.Main factors affecting the energy conversion efficiency are discussed. When the Raman shifter was pumped by Nd: YAG SHG, 1st to 4th order Stokes lines and 1st to 8th anti-Stokes lines have been observed. An overall
Experimental setup and results of BS-1 model high efficiency high pressure H2 Eaman shifter are presented.Main factors affecting the energy conversion efficiency are discussed. When the Raman shifter was pumped by Nd: YAG SHG, 1st to 4th order Stokes lines and 1st to 8th anti-Stokes lines have been observed. An overall evergy conversion efficiency of 56% and an energy conversion efficiency of 34% in the 1st Stokes component have been achieved..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 359 (1986)
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Growth of K
3
Pr(PO
4
)
2
crystals
Hong Guangyan, Yue Shuying, and Gao Jianzhang
The crystals of K3Pr(PO4)2 have been grown from a KF-KC1 flux. The influence of the flux evaporation on the crystal yield is given. The chemical analysis and X-ray diffraction pattern confirmed that the crystal was K3Pr(PO4)2. The infrared, absorption and fluorescence spectra have been determined.
The crystals of K3Pr(PO4)2 have been grown from a KF-KC1 flux. The influence of the flux evaporation on the crystal yield is given. The chemical analysis and X-ray diffraction pattern confirmed that the crystal was K3Pr(PO4)2. The infrared, absorption and fluorescence spectra have been determined..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 362 (1986)
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Detection system for time resolved weak signals in laser spectroscopy
Ye Lili, Tang Shijun, Lu Shiping, Chen Junde, Gao Wenbing, and Ji Hanting
A transient digitizer is combined with a multichannel analyzer to form a multichannel averaging system. This system has faster response time and higher accumulation velocity than normal multichannel signal averagers. It has been used in some simulating experiment and laser-induced fluorescence measurement of CH4.
A transient digitizer is combined with a multichannel analyzer to form a multichannel averaging system. This system has faster response time and higher accumulation velocity than normal multichannel signal averagers. It has been used in some simulating experiment and laser-induced fluorescence measurement of CH4..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 365 (1986)
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Investigation of white light HOE——reflection holographic lens for visual display applications
Xu Kunxian
Off-axial reflection holographic visual display elements which records in dichro-mated gelatin (DCG) deposited on planar substrate of glass has been developed for pilot head-up display (HUD). Important image characteristics such as diffraction efficiency, aberrations, dispersion, distortion and optical transfer functio
Off-axial reflection holographic visual display elements which records in dichro-mated gelatin (DCG) deposited on planar substrate of glass has been developed for pilot head-up display (HUD). Important image characteristics such as diffraction efficiency, aberrations, dispersion, distortion and optical transfer function (OTF) etc for the off-axial reflection holographic lens are analysed. Preparation and processing of DCG film and several important techniques for obtaining high quality holographic lens are recommended..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 368 (1986)
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Laser speckle refractometer and its application in ophtalmology
Chen Guojian, Tang Hong, Liu Jiajun, and Wang Haijin
The principle and formula for determing ametropia of eyes by laser speckles are presented. The optical system and properties of laser speckle refractometer as well as the results of clinical application for testing refraction are described in detail.
The principle and formula for determing ametropia of eyes by laser speckles are presented. The optical system and properties of laser speckle refractometer as well as the results of clinical application for testing refraction are described in detail..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 373 (1986)
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A tunable laser with narrow linewidth output
Liu Te, and Tang Xiangchun
Narrow linewidth down to 0.0006 nm was obtained with a coated prism expander in the grating tuned dye laser. Keeping the cavity loss as low as possible and with proper choice of prism angle and incident angle, the minimum loss of the expander can be obtained.
Narrow linewidth down to 0.0006 nm was obtained with a coated prism expander in the grating tuned dye laser. Keeping the cavity loss as low as possible and with proper choice of prism angle and incident angle, the minimum loss of the expander can be obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 376 (1986)
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Experiment on Nd:glass laser rods longer than their ellipsoidal pamp cavities
Wang Yingcai
Experiment on Nd:glass laser rods which is longer than their ellipsoidal pump cavity have been made. The resuls show that, under some conditions, their laser efficiency is higher and threshold lower than that of rods of equal-length to the cavity.
Experiment on Nd:glass laser rods which is longer than their ellipsoidal pump cavity have been made. The resuls show that, under some conditions, their laser efficiency is higher and threshold lower than that of rods of equal-length to the cavity..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 377 (1986)
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Picosecond stimulated Eaman scattering of ethanol and its amplification by dye
Meng Shaoxian, Ren Jianglong, Zhang Weiging, and Kang Yuying
Stimulated Raman forward scattering of ethanol is investigated with 530. 0 nm picosecond laser pulses. Output of the Stokes light pulse is amplified by a travelling wave dye amplifier.
Stimulated Raman forward scattering of ethanol is investigated with 530. 0 nm picosecond laser pulses. Output of the Stokes light pulse is amplified by a travelling wave dye amplifier..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 379 (1986)
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A pulse repetitive single mode near IB N
2
laser and hybrid injection laser
Zhuang Dounan, and Tian Yonghe
A molecular N2 laser with the first positive band (B3πδ-A-3∑u+ tran-sition) is reported. The laser can operate stably at 0.8913 or 1.051 μm in TEM00 mode. It can also operate stably at 337.1 nm if the cavity and other conditions are changed. Its electrical pulse width and laser pulse width (FWHM)are nearly 300 ns to 10
A molecular N2 laser with the first positive band (B3πδ-A-3∑u+ tran-sition) is reported. The laser can operate stably at 0.8913 or 1.051 μm in TEM00 mode. It can also operate stably at 337.1 nm if the cavity and other conditions are changed. Its electrical pulse width and laser pulse width (FWHM)are nearly 300 ns to 100 ns.Injecting the 1.051μm single mode laser light into a Nd3+: phosphate glass laser, amplified laser pulses have been observed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 381 (1986)
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A power supply for quasi-CW solid state lasers
Xu Renfang
A novel power supply was constructed for quasi-CW solid state lasers. It provided currents from 15 A to 50 A with pulse-width of 830 ms and repetition rate of 1-15/pps. The device was successfully used to pump a double krypton lamp laser system, with shot-to-shot fluctuation of <0.3%, and ripple coefficient of <1
A novel power supply was constructed for quasi-CW solid state lasers. It provided currents from 15 A to 50 A with pulse-width of 830 ms and repetition rate of 1-15/pps. The device was successfully used to pump a double krypton lamp laser system, with shot-to-shot fluctuation of <0.3%, and ripple coefficient of <1%..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 13, Issue 6, 383 (1986)
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