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Chinese Journal of Lasers
Contents
1984
Volume: 11 Issue 1
20 Article(s)
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 1 (1984)
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Laser Devices and Laser Physics
Analysis of laser mode based on prolate functions
Yu Keming, Guo Wei, and Sun Chengyan
In this paper a new method describing laser mode based on prolate functions is presented and with the new method the mode properties of the confocal laser with square and circular mirrors are analysed.
In this paper a new method describing laser mode based on prolate functions is presented and with the new method the mode properties of the confocal laser with square and circular mirrors are analysed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 1 (1984)
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A close-cycled and flowinig XeCl excimer laser
Shangguan Cheng, Dou Airong, and Sun Xiangdong
A close-cycled and flowing XeCl excimer laser is presented. It can be operated continuously for 8 hours with an average output power of 80 mW and a lifetime of -6×l04 shots at 2 Hz on each gas replenishment.
A close-cycled and flowing XeCl excimer laser is presented. It can be operated continuously for 8 hours with an average output power of 80 mW and a lifetime of -6×l04 shots at 2 Hz on each gas replenishment..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 4 (1984)
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Preliminary investigation of CW molecular nitrogen laser
Chen Wugao
The feasibility for a CW molecular nitrogen laser has been investigated preliminarily.
The feasibility for a CW molecular nitrogen laser has been investigated preliminarily..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 7 (1984)
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A flashlamp pumped dye laser system with oscillator and amplifier
Xu Zuyan, Deng Daoqun, Guo Dongsheng, Li Xiufang, Deng Lu, and Cai Miaoquan
A flashlamp pumped dye laser with an oscillator and an amplifier is described. In this system, a nondispersive Brewster prism expander, a pressure tuning device and travelling wave amplifier are used. The overvoltage synchronously triggered spark gap is used in the travelling wave amplifier. By using Rh6G, we obtained:
A flashlamp pumped dye laser with an oscillator and an amplifier is described. In this system, a nondispersive Brewster prism expander, a pressure tuning device and travelling wave amplifier are used. The overvoltage synchronously triggered spark gap is used in the travelling wave amplifier. By using Rh6G, we obtained: peak power over 30 kW, linewidths 0.01-0.05A and tuning accuracy better than 0.004 A..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 11 (1984)
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Investigation on optogalvanic spectra of CO discharge medium
Zhang Shunyi, Wang Yumin, and Gui Zhenxing
The characteristics of optogalvanic spectra of CO discharge medium and its potential applications are studied.
The characteristics of optogalvanic spectra of CO discharge medium and its potential applications are studied..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 13 (1984)
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Self-gating by intense green light in optical Kerr shutter
Gao Fuyuan, Wang Wenyao, Zoo Jiran, Chen Shuqin, Jiang Minhua, and Qiu Peihua
This paper reports the self-gating by intense green light in optical Kerr shutter. The causes for the self-induced degeneration of the polarization are analysed preliminarily.
This paper reports the self-gating by intense green light in optical Kerr shutter. The causes for the self-induced degeneration of the polarization are analysed preliminarily..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 16 (1984)
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Emission and measurement of Bremsstrahlung spectrum from laser-plasma
Ouyang Bin, Lin Zunqi, Yu Jiajin, Gan Baihui, and Zhan Bingjun
The emission and measurement of Bremsstrahlung spectrum from laser-plasma are discussed and the Bremsstrahlung spectrometer and the measured results are described.
The emission and measurement of Bremsstrahlung spectrum from laser-plasma are discussed and the Bremsstrahlung spectrometer and the measured results are described..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 20 (1984)
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CARS spectrum of nitrobenzene vapor
Jin Yaogeng, Xu Zaoshun, Dong Genfa, Qian Shixiong, Lu Chenzai, and Li Yufen
An experimental set-up for CARS investigation of gas systems has been established and CABS spectrum of nitrobenzene vapor has been measured. In comparison with the CARS spectrum of liquid phase nitrobenzene, a frequency shift of the NO2-symmetric stretching mode(v =1345cm-1) was observed for the vapor phase. Besides, t
An experimental set-up for CARS investigation of gas systems has been established and CABS spectrum of nitrobenzene vapor has been measured. In comparison with the CARS spectrum of liquid phase nitrobenzene, a frequency shift of the NO2-symmetric stretching mode(v =1345cm-1) was observed for the vapor phase. Besides, the CARS spectrum line of nitrobenzene vapor was found to be asymmetric and much broader than that of liquid nitrobenzene..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 24 (1984)
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Investigation of temperature effects on characteristics of GaAlAs DH lasers
Zheng Guangfu, and Zhan Suzhen
The temperature effects on the statical and dynamic characteristics of electrical and optical parameters and operating lifetime have been investigated and analyzed for the GaAlAs DH lasers. For lasers of lower changing rate of threshold current, at the extrapolated room temperature, the CW operating lifetime is over 8
The temperature effects on the statical and dynamic characteristics of electrical and optical parameters and operating lifetime have been investigated and analyzed for the GaAlAs DH lasers. For lasers of lower changing rate of threshold current, at the extrapolated room temperature, the CW operating lifetime is over 8 × 104 hrs, self-pulsating and kinking of lasing output have also been studied..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 28 (1984)
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Study of model HND-120 visible multi-wavelength He-Ne laser
You Dajiang, and Zhao Suitang
A multi-wavelength He-Ne laser tuned by a dispersion prism has been developed. Laser lines of eight different wavelengths in visible region have been obtained with 30 mW output power at 6328 A and 10 mW at 6118 A. Some problems on the design of this laser are discussed and its performances are described.
A multi-wavelength He-Ne laser tuned by a dispersion prism has been developed. Laser lines of eight different wavelengths in visible region have been obtained with 30 mW output power at 6328 A and 10 mW at 6118 A. Some problems on the design of this laser are discussed and its performances are described..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 34 (1984)
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Electric charge neutralization discharge and its application to gas lasers
Wang Fudun, and Gong Guangyuan
A new type of gas discharge, called electric charge neutralizing discharge, is discussed in this paper. Its characteristics are that different charges seperately accumulate on different faces in the device. This discharge in the device doesn’t constitute a part of conductive electric current for outside circuit and it
A new type of gas discharge, called electric charge neutralizing discharge, is discussed in this paper. Its characteristics are that different charges seperately accumulate on different faces in the device. This discharge in the device doesn’t constitute a part of conductive electric current for outside circuit and it is produced by electrons, atoms and molecules in the discharge space. This eliminates metallic electrodes and preionization..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 39 (1984)
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Experiment of laser performances of Alexandrite crystals
Zhang Shoudu, and Zhang Kemin
Vibronic laser output in Alexandrite crystals has been obtained. Experimental results prove that the laser performances has been improved as the temperature elevated, and the emission was the strongly polarized one as E // b. Tunable emission was observed at room temperature.
Vibronic laser output in Alexandrite crystals has been obtained. Experimental results prove that the laser performances has been improved as the temperature elevated, and the emission was the strongly polarized one as E // b. Tunable emission was observed at room temperature..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 44 (1984)
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Atmospheric extinction measurements of He-Ne laser light
Wu Jihua, and Gong Zhiben
Atmospheric extinction of the He-Ne laser has been measured in Hefei district. The results show that the extinction coefficients are strongly correlated with the concentration of aerosol particles with the radius of over 0.25 ×m. The value of linear correlation coefficient has been found to be 0.91. Howerer, as op
Atmospheric extinction of the He-Ne laser has been measured in Hefei district. The results show that the extinction coefficients are strongly correlated with the concentration of aerosol particles with the radius of over 0.25 ×m. The value of linear correlation coefficient has been found to be 0.91. Howerer, as opposed to the results of ref. [1], the atmospheric extinction coefficient data seem to indicate that no obvious correlation exists with relative humidity of up to 75%. Therefore, we think that the aerosol present in Hefei during the measuring period is strongly inhygroscopio..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 47 (1984)
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Velocity measurement of sediment-laden flow by means of laser Doppler anemometer
Zhao Jingrui, Zhao Quanhe, Yao Fengxian, and Yang Xiuxian
The power attenuation coefficient and the change of the coherence of the laser through the sediment-laden water are obtained in the experiment. In dynamic state the velocity of the sediment-laden flow and Doppler signal characteristics are measured. The optimum concentration and the limitation concentration of the sedi
The power attenuation coefficient and the change of the coherence of the laser through the sediment-laden water are obtained in the experiment. In dynamic state the velocity of the sediment-laden flow and Doppler signal characteristics are measured. The optimum concentration and the limitation concentration of the sediment-laden flow for laser Doppler anemometer are obtained. The analysis of dynamic experiment using a simple model is connected and the results of the analysis agree with those of the experiment..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 51 (1984)
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Broadband high reflectivity mirror for tunable dye lasers
Jin Linfa, Zhang Hongfen, and Tang Benqi
By selecting the proper coating technique and refining the film thickness to lower the electric field strength in lasers, the low loss and high reflectivity broadband mirror in visible region is obtained.
By selecting the proper coating technique and refining the film thickness to lower the electric field strength in lasers, the low loss and high reflectivity broadband mirror in visible region is obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 54 (1984)
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Measurement of microenergy of laser pulses
Zhou Fuzheng, Gan Baihui, Zeng Jikan, Wu Tongyang, Ma Shukan, and Yu Yuehua
In this paper the principle of measuring laser pulse energy with a pyroelectrio detector is described, and a pyroelectric laser microenergy gauge has been developed. Using the techniques of amplification, peak-selection, digital display, synchronously triggered and gate-controlled circuit, elelctromagnetic and other in
In this paper the principle of measuring laser pulse energy with a pyroelectrio detector is described, and a pyroelectric laser microenergy gauge has been developed. Using the techniques of amplification, peak-selection, digital display, synchronously triggered and gate-controlled circuit, elelctromagnetic and other interferences are suppressed. These make it more sensitive, and can measure laser pulse energy down to 70 nj..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 58 (1984)
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[in Chinese]
[in Chinese], and [in Chinese]
The output of an Ar+ laser is directly modulated by discharge current with various wave forms using transistor modulator. The limiting modulation frequency is determined experimentally. The principal influential factors are discussed qualitatively.
The output of an Ar+ laser is directly modulated by discharge current with various wave forms using transistor modulator. The limiting modulation frequency is determined experimentally. The principal influential factors are discussed qualitatively..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 61 (1984)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
In this paper, we describe a simple and reliable circuit for program control of energy when multi-laser-pulses are used for drilling.
In this paper, we describe a simple and reliable circuit for program control of energy when multi-laser-pulses are used for drilling..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 62 (1984)
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[in Chinese]
[in Chinese], and [in Chinese]
To prevent the injury of human body from X-ray damage and obtain the-ideal picture has been a problem for all the operators concerned.The article describes the principles, testing method and examples when a laser aligner is used to solve this problem.
To prevent the injury of human body from X-ray damage and obtain the-ideal picture has been a problem for all the operators concerned.The article describes the principles, testing method and examples when a laser aligner is used to solve this problem..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 11, Issue 1, 63 (1984)
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Laser Devices and Laser Physics