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Chinese Journal of Lasers
Contents
1987
Volume: 14 Issue 4
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. 14, Issue 4, 1 (1987)
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Preionization electron decay process in XeCl avalanche discharge lasers
Zheng Chengen, and Dennis Lo
Both calculation and experiment shows that the dissociation attachment of electrons and HOl is not the major chartnel for electron loss in XeOl lasers with typical gas mixture of HOl/Xe/Ne. The slow decay of electron density may be involved with the three-body combination of electrons.
Both calculation and experiment shows that the dissociation attachment of electrons and HOl is not the major chartnel for electron loss in XeOl lasers with typical gas mixture of HOl/Xe/Ne. The slow decay of electron density may be involved with the three-body combination of electrons..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 193 (1987)
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Theoretical analysis of resonant interaction between light and CO laser medium
Wang Yumin
Using a simplified analytical model of CO laser, we have analysed the influence of a single branch vibratational transition and resonant self-absorption on the vibrational distribution function and studied the characteristics of gain saturation and the pump effect of the resonant self-absorption.
Using a simplified analytical model of CO laser, we have analysed the influence of a single branch vibratational transition and resonant self-absorption on the vibrational distribution function and studied the characteristics of gain saturation and the pump effect of the resonant self-absorption..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 200 (1987)
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Quasi-channeling radiation for charged particles
Shao Mingzhu, and Luo Shiyu
In the paper a new sine-squared potential is introduced to describe the quasi-channeling radiation for charged particles by rotational period solution of the particle motion equation,the difference between quasi-channeling and channeling radiation is discussed, and the contribution of the quasi-channeling radiation to
In the paper a new sine-squared potential is introduced to describe the quasi-channeling radiation for charged particles by rotational period solution of the particle motion equation,the difference between quasi-channeling and channeling radiation is discussed, and the contribution of the quasi-channeling radiation to total radiation intensity is calculated..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 206 (1987)
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Polarization characteristics of a 10.6 μm glass-metal complex waveguide laser
Wang Ruifong, Li Hongbo, and Li Shaohui
A waveguide tube structure is suggested to get linear polarized output in small CO2 waveguide lasers. Using this structure, linear polarized TEMoo mode laser output of over 5W and the degree of polarization of over 95% are obtained with an active medium length of 250mm and a total cavity length of 310 mm.
A waveguide tube structure is suggested to get linear polarized output in small CO2 waveguide lasers. Using this structure, linear polarized TEMoo mode laser output of over 5W and the degree of polarization of over 95% are obtained with an active medium length of 250mm and a total cavity length of 310 mm..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 210 (1987)
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Investigation on lifetime of He-Ne lasers by means of Weibull function
Wang X-ishan, and Sun Zhendong
The failure mechanism of He-Ne lasers is compared with the physical model of Weibull function. It follows that the lifetime of He-Ne lasers ought to obey Weibull function. An equation for lifetime shortening is derived, which is used to determine readily the lifetime characteristics of He-Ne lasers.
The failure mechanism of He-Ne lasers is compared with the physical model of Weibull function. It follows that the lifetime of He-Ne lasers ought to obey Weibull function. An equation for lifetime shortening is derived, which is used to determine readily the lifetime characteristics of He-Ne lasers..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 213 (1987)
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Laser character of intracavity beam expanding prisms
Liu Qing, and Zhang Guowei
The loss characters of beam expanding prisms and prism systems are analyzed with prism expansion ratio M and material index n as basic parameters. The optimum design of low loss beam expanding prism system is suggested.
The loss characters of beam expanding prisms and prism systems are analyzed with prism expansion ratio M and material index n as basic parameters. The optimum design of low loss beam expanding prism system is suggested..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 216 (1987)
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Investigation of two laser beam coupling and amplification in Ce-doped SBN single crystals
Xu Huaifang, Jin Yuanwang, He Xuemei, Tang Yuanfen, and Zhang Yanxing
The experiment of a laser beam amplified by the other after both beams crossing a Ce-doped (0.1Wt%) strontium barium niobate (BaxSr1-xNbaO6 or SEN, x=0.48) crystal is reported and preliminary theoretical analysis is given. The density of mobile charges in Ce-SBN is calculated to be 4.5xl016pm-8 (at ambient temperature)
The experiment of a laser beam amplified by the other after both beams crossing a Ce-doped (0.1Wt%) strontium barium niobate (BaxSr1-xNbaO6 or SEN, x=0.48) crystal is reported and preliminary theoretical analysis is given. The density of mobile charges in Ce-SBN is calculated to be 4.5xl016pm-8 (at ambient temperature). The sign of mobile charges determined from the energy flow direction is positive. Couplings at different polarizations, different wavelengths and different doping amounts are compared..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 220 (1987)
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Amorphous Si: H film grown by laser plasma induced chemical vapour deposition
Li Zhaolin, Zhang Zebo, Hong Xichun, Zhao Yuying, and Wang Tianjuan
Amorphous Si: H fillm has been obtained with a pulsed CO2 laser by laser plasma induced chemical vapour deposition (LPCVD). The experiment is described and the dependance of film growth rate on the related experimental parameters and the suitable depositing condition are given. Some properties of the film were measured
Amorphous Si: H fillm has been obtained with a pulsed CO2 laser by laser plasma induced chemical vapour deposition (LPCVD). The experiment is described and the dependance of film growth rate on the related experimental parameters and the suitable depositing condition are given. Some properties of the film were measured and analyzed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 225 (1987)
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Study of KPrP
4
O
12
crystals
Hong Guangyan, Yue Shuying, Li Hongjun, and Lan Shuqin
KPrP4P12 crystals were grown by evaporation solution method. The conditions of growth were studied and some better crystals were obtained. Chemical analysis and X-ray diffraction pattern proved the grown crystals to be KPrP4O12.The crystal structure of KPrP4O12 can be divided into two types. Their infrared, absorption
KPrP4P12 crystals were grown by evaporation solution method. The conditions of growth were studied and some better crystals were obtained. Chemical analysis and X-ray diffraction pattern proved the grown crystals to be KPrP4O12.The crystal structure of KPrP4O12 can be divided into two types. Their infrared, absorption and fluorescence spectra have been determined. It may prove to be a novel laser crystal..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 229 (1987)
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Theoretical analysis of a pulsed laser discharge circuit with a rail gap
Lou Qihong, Qi Jianping, and Wang Runwen
Rail gap is one of the most important technology to obtain large volume uniform discharge at high gas pressure. In this paper, a pulsed laser discharge circuit w’th a rail gap was analyzed theoretically. According to the self breakdown, voltages of the rail gap at different gas pressures, a computer code was used to ca
Rail gap is one of the most important technology to obtain large volume uniform discharge at high gas pressure. In this paper, a pulsed laser discharge circuit w’th a rail gap was analyzed theoretically. According to the self breakdown, voltages of the rail gap at different gas pressures, a computer code was used to calculate the discharge characteristics and laser output for different discharge voltages and repetition rates. The calculated results are in good agreement with the experimental data..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 232 (1987)
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Effect of background pressure on fast electrons produced from metal target vaporized by laser
He Wei, Wu Zixia, Cui Jumwen, Hu Qiquan, and Lin Fucheng
Study was made for the effects of background pressure on the fast electrons produced from metal target evaporization by Q-switched laser light(5x108W/cm2). In this paper, the phenomena observed in the experiment are discussed and explained.
Study was made for the effects of background pressure on the fast electrons produced from metal target evaporization by Q-switched laser light(5x108W/cm2). In this paper, the phenomena observed in the experiment are discussed and explained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 237 (1987)
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Single pulse cancer diagnosis by laser excited autofluorescence
Ye Yanming, Yang Yuanlong, Xia Jingfang, Li Fuming, and Li Yufen
Using optical multichannel analyser we have got the characteristic autofluore scence spactra of various tissues by single pulse excitation. More than 10 patients with stomache cancer were detected clinically by optical fiber through the endoscope. It might be a useful tool for cancer diagnosis.
Using optical multichannel analyser we have got the characteristic autofluore scence spactra of various tissues by single pulse excitation. More than 10 patients with stomache cancer were detected clinically by optical fiber through the endoscope. It might be a useful tool for cancer diagnosis..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 241 (1987)
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Laser stock-removing by localized melting
Li Lijun, and J. Masumder
A new stock-removing process using a laser beam is proposed.In this process, a laser beam focused into a light strip is used to melt the localized area at the interface bet-ween the material to be removed and the workpiece. The scraps due to melting is removed by a striping tool. The analysis and preliminary experiment
A new stock-removing process using a laser beam is proposed.In this process, a laser beam focused into a light strip is used to melt the localized area at the interface bet-ween the material to be removed and the workpiece. The scraps due to melting is removed by a striping tool. The analysis and preliminary experiments proved the feasibility of the method. It has small cutting force and is free from wear and economic in laser energy usage..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 244 (1987)
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Optical probe diagnosis in laser-produced plasma study
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper reports the Baman-shif ted visible probe system recently set up in the six beam Nd: glass laser facility in Shanghai Institute of Optics and Fine Mechanics and its preliminary diagnostic results in laser-produced plasma experiments.
This paper reports the Baman-shif ted visible probe system recently set up in the six beam Nd: glass laser facility in Shanghai Institute of Optics and Fine Mechanics and its preliminary diagnostic results in laser-produced plasma experiments..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 247 (1987)
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Flourescence problem in multi-photon optical bistability
[in Chinese], [in Chinese], and [in Chinese]
A quantum mechanics model used to describe a n-photon transition within an atomic system is presented, and a semiclassical approach is used to obtain Maxwell-Bloeh equations so as to describe the multi-photon optical bistability system. From these equations the conclusions can be easily derived as follows: under statio
A quantum mechanics model used to describe a n-photon transition within an atomic system is presented, and a semiclassical approach is used to obtain Maxwell-Bloeh equations so as to describe the multi-photon optical bistability system. From these equations the conclusions can be easily derived as follows: under stationary conditions, the flourescence intensity of multi-photon optical bistability is propotional to N orN - 1/(2n-1)in the cooperative region and is propotional to N in the single atom region..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 248 (1987)
Get PDF
[in Chinese]
[in Chinese], and [in Chinese]
Technical specifications of the flashlamp pumped dye laser for curing cancar with HpD is introduced and the test results on animals and climeal practices are given.
Technical specifications of the flashlamp pumped dye laser for curing cancar with HpD is introduced and the test results on animals and climeal practices are given..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 250 (1987)
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[in Chinese]
[in Chinese], and [in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 250 (1987)
Get PDF
Testing data on 1363 examinations of animal body tissues penetrated by He-Ne laser light were analyzed and compared with those of the man.
[in Chinese], and [in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 14, Issue 4, 252 (1987)
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