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Journals >
Chinese Journal of Lasers
Contents
1981
Volume: 8 Issue 4
22 Article(s)
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Research Article
[in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 1 (1981)
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Laser Devices and Laser Physics
Analytical description of temporal characteristics for powerful laser pulses
Yang Hanchien, Qu Zhimin, Liu Shonghao, and He Guangsheng
The solution of temporal parameters for powerful laser pulses is obtained by extending Wagner and Lengyels investigation. The expression for the forming time of pulse is given. It is presented that the forming time of pulse, single pulse condition and pulse duration are affected by the cross section of the active mediu
The solution of temporal parameters for powerful laser pulses is obtained by extending Wagner and Lengyels investigation. The expression for the forming time of pulse is given. It is presented that the forming time of pulse, single pulse condition and pulse duration are affected by the cross section of the active medium..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 9 (1981)
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Criterions and discussion on ionization instability in e-beam controlled discharge KrF
*
laser
Zheng Chengen
In this paper, the criterion for steady discharge in e-beam controlled KrF laser is deduced using phase-plane method. The effects of E/P, F2 fractional densities and intensity of external ionization source on ionization instability are discussed.
In this paper, the criterion for steady discharge in e-beam controlled KrF laser is deduced using phase-plane method. The effects of E/P, F2 fractional densities and intensity of external ionization source on ionization instability are discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 14 (1981)
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A pulsed xenon ion laser
Wang Yuzhi, Xie Peiliang, Dong Jingxing, and Feng Bingfang
Output and threshold parameters of a small bore pulsed xenon laser are presented in detail as a function of voltage and gas pressure.The peak laser power is about 150 W. Ten spectral lines in the range of 4300~6300 A were found. Laser pulse duration is 0.2 ~ 1us, discharge voltage is 4~12kV and gas pressure is 0.1- 9 m
Output and threshold parameters of a small bore pulsed xenon laser are presented in detail as a function of voltage and gas pressure.The peak laser power is about 150 W. Ten spectral lines in the range of 4300~6300 A were found. Laser pulse duration is 0.2 ~ 1us, discharge voltage is 4~12kV and gas pressure is 0.1- 9 mtorr..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 18 (1981)
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Self-induced polarization change of 1.06μm laser beam in glasses
Zhang Meizhen, Deng He, and Li Chengfu
We report here the observation of self-induced polarization change in some optical glasses and laser glasses with a Nd3+-glass TEM00 mode laser beam. The nonlinear optical susceptibilities C1221 of these glasses have been measured experimentally and their nonlinear refractive indices n2 have been determined.
We report here the observation of self-induced polarization change in some optical glasses and laser glasses with a Nd3+-glass TEM00 mode laser beam. The nonlinear optical susceptibilities C1221 of these glasses have been measured experimentally and their nonlinear refractive indices n2 have been determined..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 22 (1981)
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Experimental study on room temperature LiF crystal F
2
colour center lasers
Wang Lianzhi, Wang Tingyuan, Wang Tingjie, Chen Daiyuan, Yao Xinci, Huang Zhenghui, Liu Zhengqing, and Liu Youmin
The second harmonics of YAG:Nd3+ laser at 0.532m was used as the pumping source. The experimental study was conducted on room temperature repetitive LiF crystal Fa center lasers, and the mechanisms concerned are discussed.
The second harmonics of YAG:Nd3+ laser at 0.532m was used as the pumping source. The experimental study was conducted on room temperature repetitive LiF crystal Fa center lasers, and the mechanisms concerned are discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 25 (1981)
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A study on the aromatic abundance in rock sample by laser-pyrolysis gas chromatography
Zhu Cangmin, Fan Jingfan, Wang Xianbai, Bao Jianxin, Zhu Aizhen, and Yu Yanshan
The results on the study of aromatic abundance in rock sample with ruby laser-pyrolysis gas chromatography (LPGC) are given. Experimental data show that aromatic abundance in rock sample can be decided by the relative abundance of G2H2 produced from LPGC. Accordingly, this provides a rapid and simple LPGC method for de
The results on the study of aromatic abundance in rock sample with ruby laser-pyrolysis gas chromatography (LPGC) are given. Experimental data show that aromatic abundance in rock sample can be decided by the relative abundance of G2H2 produced from LPGC. Accordingly, this provides a rapid and simple LPGC method for determining the oil-bearing rock in sedimentary rocks. In this paper, preliminary theoretical analysis from the view-point of plasma mnti-cheroistry reaction processes is .made on laser pyrolysis mechanism and others..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 28 (1981)
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The formation of boron fluoro-chloride in the separation of boron isotopes by multiphoton absorption of BCl
3
Li Li, Chen Guancheng, Zhang Ruijun, and Kang Ning
The reaction products in the process of boron isotope separation by multiphoton absorption of BC13 have been studied. When oxygen was used as a scavenger, the stable solid product was B2O3, and (BOC1)3 was not found. Our experiments show that when irradiated with focused TEA C02 laser, BC13 reacted with fluoroearbou gr
The reaction products in the process of boron isotope separation by multiphoton absorption of BC13 have been studied. When oxygen was used as a scavenger, the stable solid product was B2O3, and (BOC1)3 was not found. Our experiments show that when irradiated with focused TEA C02 laser, BC13 reacted with fluoroearbou grease to form boron fluoro-chloride and boron trifluoride. A possible mechanism for the reaction between BC13 and fluorocarbon grease has been proposed. It seems that BC13 was first dissociated into BC12 and Cl by intense IR laser action, and BC12 then reacted with fluoroearbon grease to form BFC12. Moreover BP2C1 and BF3 were formed because of the dismutation of BFC12..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 33 (1981)
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Coherent anti-Stokes Raman spectroscopy (CARS)
Yu Bingkun, and Wang Zhaoyong
This paper describes the principles and characteristics of CABS as well as its experimental schemes and applications. A discussion is given about its prospects and problems concerned on the basis of our practical work on CARS.
This paper describes the principles and characteristics of CABS as well as its experimental schemes and applications. A discussion is given about its prospects and problems concerned on the basis of our practical work on CARS..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 38 (1981)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Pulsed lasing of gold atoms at 6278 A has been obtained in the electric-discharge pumped mixture of gold vapour and neon buffer gas. A sealed-off fused quartz discharge tube lined with an aluminum oxide ceremic tube is used. The laser operates at 1500. It’s output power is 30 mW when operates at 16kHz with a lifetime o
Pulsed lasing of gold atoms at 6278 A has been obtained in the electric-discharge pumped mixture of gold vapour and neon buffer gas. A sealed-off fused quartz discharge tube lined with an aluminum oxide ceremic tube is used. The laser operates at 1500. It’s output power is 30 mW when operates at 16kHz with a lifetime of 7.5 hours..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 45 (1981)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The paper describes the basic principles of laser triggered spark gaps, and the experimental results using various medium. It is shown that to obtain fast rise time, the spark gap filled with high pressure gas is required, and this risetime is about 1 ns.
The paper describes the basic principles of laser triggered spark gaps, and the experimental results using various medium. It is shown that to obtain fast rise time, the spark gap filled with high pressure gas is required, and this risetime is about 1 ns..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 46 (1981)
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[in Chinese]
[in Chinese], and [in Chinese]
In this paper, effects of cleaning treatment of the cylindrical surfaces of Nd glass rods on the gain of laser amplifiers were studied experimentally. Results show that the small signal gain of the rod cleaned carefully and strictly, as compared with that of the same rod cleaned usually, is increased by a factor of two
In this paper, effects of cleaning treatment of the cylindrical surfaces of Nd glass rods on the gain of laser amplifiers were studied experimentally. Results show that the small signal gain of the rod cleaned carefully and strictly, as compared with that of the same rod cleaned usually, is increased by a factor of two..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 47 (1981)
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[in Chinese]
[in Chinese], and [in Chinese]
With frequency doubled 1.06m lasar as detecting beam, nonlinear refractive index n2 of ZF-7 glass was measured using Jamin interferometer. It is about 7x10-14 esn, with an accuracy of 20%.
With frequency doubled 1.06m lasar as detecting beam, nonlinear refractive index n2 of ZF-7 glass was measured using Jamin interferometer. It is about 7x10-14 esn, with an accuracy of 20%..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 48 (1981)
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[in Chinese]
[in Chinese], [in Chinese], and [in Chinese]
The wavefront curvature of a laser beam was measured by diffraction imaging, a measurement method which may be applied in measurements. The local wavefront distortion induced by small-scale self-focusing of high power laser beams have been improved.
The wavefront curvature of a laser beam was measured by diffraction imaging, a measurement method which may be applied in measurements. The local wavefront distortion induced by small-scale self-focusing of high power laser beams have been improved..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 50 (1981)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The structural features and perfomances of our opto-aooustic CO2 laser spectrometer is reported. The opto-acoustic spectra of ethylene, ammonia and other gases are recorded with this apparatus by automatic scanning of CO2 laser emission spectral range.
The structural features and perfomances of our opto-aooustic CO2 laser spectrometer is reported. The opto-acoustic spectra of ethylene, ammonia and other gases are recorded with this apparatus by automatic scanning of CO2 laser emission spectral range..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 52 (1981)
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[in Chinese]
[in Chinese]
We derive the formulae for computing the natural frequency of the air-supported absorber and introduce briefly the mounting process of the holographic bench.
We derive the formulae for computing the natural frequency of the air-supported absorber and introduce briefly the mounting process of the holographic bench..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 54 (1981)
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[in Chinese]
[in Chinese]
A passive current-stabilized power supply as pump source of a 440mm long He-Ne laser tube is described. Better current fluctuation of 0.05% was obtained by means of rectifier type constant voltage transfomer and compensation for constant current transistor controller when transmission line power voltage varies within 1
A passive current-stabilized power supply as pump source of a 440mm long He-Ne laser tube is described. Better current fluctuation of 0.05% was obtained by means of rectifier type constant voltage transfomer and compensation for constant current transistor controller when transmission line power voltage varies within 180~250 V and current of laser tube stabilized within 6~10mA..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 56 (1981)
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[in Chinese]
[in Chinese], and [in Chinese]
Fast measurement of the spot radius (z)of a Gaussian laser beam on any vertical section of optical axis has been made by using scanning knifeedge. The expression for spot size using this means is deduced and the results are in better agreement with the theoretical values.
Fast measurement of the spot radius (z)of a Gaussian laser beam on any vertical section of optical axis has been made by using scanning knifeedge. The expression for spot size using this means is deduced and the results are in better agreement with the theoretical values..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 58 (1981)
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[in Chinese]
[in Chinese]
The methods for calculating tolerance of polygonal tapered mirror, tapered angle, divided angle, axial hole and its assembly are put forward. It provides the theory for designing and assembling of laser scanning systems.
The methods for calculating tolerance of polygonal tapered mirror, tapered angle, divided angle, axial hole and its assembly are put forward. It provides the theory for designing and assembling of laser scanning systems..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 59 (1981)
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[in Chinese]
[in Chinese], [in Chinese], and [in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 60 (1981)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 62 (1981)
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[in Chinese]
[in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 8, Issue 4, 63 (1981)
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