Journals >Chinese Journal of Lasers
Contents
1988
Volume: 15 Issue 8
21 Article(s)
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Research Article
Contrast-enhanced effect spectral character and time relaxation properties for injection Fabry-Perot cavity
Chen Shouhua, Xu Yuguang, and H. A. Schuessler
The Parameter relationship between an injection Fabry-Perot cavity and its output beam was calculated for several typical cases, the spectral characters and time relaxation effects of the cavity were investigated, and the potential applications of these properties in laser spectroscopy were indicated.The Parameter relationship between an injection Fabry-Perot cavity and its output beam was calculated for several typical cases, the spectral characters and time relaxation effects of the cavity were investigated, and the potential applications of these properties in laser spectroscopy were indicated..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 473 (1988)
A method for enhancement of transition radiation intensity
Qu Weixin, and Xu Zhizhan
The characteristics of quantum spectrum of the transition radiation produced when high energy relativistic electrons passing through a foil stack,the mechanism for producing transition radiation and the principal unfavourable factors which affect the enhancement of intensity of transition radiation are analysed, and a The characteristics of quantum spectrum of the transition radiation produced when high energy relativistic electrons passing through a foil stack,the mechanism for producing transition radiation and the principal unfavourable factors which affect the enhancement of intensity of transition radiation are analysed, and a new method is put forward on the analysis to increase the intensity of transition radiation based ..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 477 (1988)
Investigation on physico-chemical processes of KTP crystal growth from phosphate fluxes (Ⅰ)
Liu Xiangyang, and Jiang Minhua
bome careful researches have been made on the dissolution processes of KTP crystals in phosphate fluxes, and their variations in the solubility and substability regions for crystal growth. Compared with the results of phosphate composition analysis, the varying rules shown in various processes, and the dependence of vabome careful researches have been made on the dissolution processes of KTP crystals in phosphate fluxes, and their variations in the solubility and substability regions for crystal growth. Compared with the results of phosphate composition analysis, the varying rules shown in various processes, and the dependence of various factors on each other have been further studied. Different phosphate fluxes and their composition effects on KTP crystal growth habit have also been discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 482 (1988)
High sensitivity and broadband laser power ratiometer system
Zhang Baoru, Shen Zhongji, Guo Zhengqiang, Wang Ningyi, Yu Jing, and Yang Jie
PR-1 laser power ratiometer system is reported which is based on a cavity pyroelectric detector and a silicon photodiode, and the overall structure and the circuitry design of the instrument are described.PR-1 laser power ratiometer system is reported which is based on a cavity pyroelectric detector and a silicon photodiode, and the overall structure and the circuitry design of the instrument are described..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 497 (1988)
JK-80 large aperture laser energy meter
Wang Ruihua, Huang Guanlong, Wang Jianxiong, Zhuang Dounan, and Zhou Fusheng
JM-80 large aperture laser energy meter has been developed. Automatic thermal balance compensation technique is adopted and the restoring zero time has been reduced from 15 minutes to less than one minute,Digital readout is used for energy display and peak value is kept. With electrical heating calibration, absolute meJM-80 large aperture laser energy meter has been developed. Automatic thermal balance compensation technique is adopted and the restoring zero time has been reduced from 15 minutes to less than one minute,Digital readout is used for energy display and peak value is kept. With electrical heating calibration, absolute measurement accuracy is better than 5%..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 500 (1988)
Incoherent light and white light speckle photography
Gu Jie, and Shen Yongzhao
Starting from a speckle model of the scattering object and giving consideration to etatistical nature of speckle phenomena, the recording process of specklegrams with monochromatic incoherent light and white light illuminating is discussed.The relationship between monochromatic light speckle and white light speckle is Starting from a speckle model of the scattering object and giving consideration to etatistical nature of speckle phenomena, the recording process of specklegrams with monochromatic incoherent light and white light illuminating is discussed.The relationship between monochromatic light speckle and white light speckle is explored .Quantitative description is given for the effect of he frequency content of the scattering object and the photographic aperture on the spatial frequency of specklegrams.Theoretical analysis and experimental demonstration are also presented..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 502 (1988)
Discussion on equivalent confocal resonator method
Lu Yaxiong
Uniqueness of equivalent confocal resonator method is discussed. Demonstration of the uniqueness for tne cases it holds has been improved by using the quasigeometric theory of optical resonators and the characters of the equivalent symmetric confocal resonator.Uniqueness of equivalent confocal resonator method is discussed. Demonstration of the uniqueness for tne cases it holds has been improved by using the quasigeometric theory of optical resonators and the characters of the equivalent symmetric confocal resonator..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 504 (1988)
Laser Physics
Stability analysis of detuned modes with Gaussian transverse profile in lasers and OBS
Lin Shenlu
We studied analytically and numerrically the stability of the stationary detuned modes with Gaussian transverse profile in a ring cavity containing homogeneously broadened two-level atoms. Using the mean-field and good cavity approximations, we found out unstable domain.In OBS case, we obtained conditions of optical biWe studied analytically and numerrically the stability of the stationary detuned modes with Gaussian transverse profile in a ring cavity containing homogeneously broadened two-level atoms. Using the mean-field and good cavity approximations, we found out unstable domain.In OBS case, we obtained conditions of optical biatability and a quadratic equation which is satisfied by the eigenvalues..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 449 (1988)
A pulsed chemical oxygen-iodine laser initiated by electrical discharge
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper demonstrates for the first time the feasibility of an electrically initiated pulsed oxygen-iodine laser which can be initiated efficiently by low energy electrons. An O2(1)-CH3I-N2 mixture has been made to lase by electrical initiation with an output energy of 130mJ. The electrical efficiency is 350 times hiThis paper demonstrates for the first time the feasibility of an electrically initiated pulsed oxygen-iodine laser which can be initiated efficiently by low energy electrons. An O2(1)-CH3I-N2 mixture has been made to lase by electrical initiation with an output energy of 130mJ. The electrical efficiency is 350 times higher than that obtained with photo-initiation..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 455 (1988)
Measurement of electron beam distribution in Raman FELs
Lu Zaitong, Chu Cheng, Shi Ruigen, Zhang Lifen, and Shi Jinchuan
Bremstrahlung from anode of thick targets was measured to determine the 3-beam movement and distribution in our Raman free-electron laser. The principle of the method and the measurement results of electron distribution in the diode and drift tube of the Raman free electron laser are presented. The experimental resultsBremstrahlung from anode of thick targets was measured to determine the 3-beam movement and distribution in our Raman free-electron laser. The principle of the method and the measurement results of electron distribution in the diode and drift tube of the Raman free electron laser are presented. The experimental results are in accordance with the theoretical predition..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 458 (1988)
A 16μm para H2 stimulated Raman laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A para-H2 stimulated Raman laser pumped by a TEA CO2 laser was developed. The principal factors affecting Raman conversion efficiency were discussed. When the laser ran at about 100K, the maximum output energy of the Stokes wave at 16m was 536mJ, corresponding to an energy conversion of 13% and a quantum conversion of A para-H2 stimulated Raman laser pumped by a TEA CO2 laser was developed. The principal factors affecting Raman conversion efficiency were discussed. When the laser ran at about 100K, the maximum output energy of the Stokes wave at 16m was 536mJ, corresponding to an energy conversion of 13% and a quantum conversion of over 20%..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 462 (1988)
Laser pulse chirping and its compensation in colliding-pulse mode-locked dye laser
Zhang Guoxuan, Zhang Yinghua, and Fu Baoxiang
Lassr pulse chirping has been observed experimentally in our CPM laser. Using intracavity compensation by a prism-pair consisted of two prisms, effect of group velocity dispersion of the prism-pair on duration, stability and spectral characters of laser pulses is studied experimentally.Lassr pulse chirping has been observed experimentally in our CPM laser. Using intracavity compensation by a prism-pair consisted of two prisms, effect of group velocity dispersion of the prism-pair on duration, stability and spectral characters of laser pulses is studied experimentally..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 467 (1988)
Green and yellow pulses of copper vapor laser oscillator/ampHfier and their influence on output of R6G dye laser
Liang Peihui, Ben Hong, Sun Xiaoxiang, and Wang Zhiying
This paper experimentally shows that (1) the intensity evolution of green (510.6 nm) and yellow (578.2 nm) pulses of a copper vapor laser oscillator from lasing to steady operation, (2) the effect of switching delay time in an oscillator/amplifier system on the amplitudes and the relative delay between both pulses. It This paper experimentally shows that (1) the intensity evolution of green (510.6 nm) and yellow (578.2 nm) pulses of a copper vapor laser oscillator from lasing to steady operation, (2) the effect of switching delay time in an oscillator/amplifier system on the amplitudes and the relative delay between both pulses. It is demonstrated that for a B6G-dye laser, the conversion efficiency not only depends on the intensity ratio, but also on the relative delay of the green and yellow pulses..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 470 (1988)
Photon antibunching in a single mode laser light
Gu Qiao
Starting from general reservoir theory for the atomic-field density operator, the expression for the photon distribution in single-mode laser light is determined by taking account of the influence of both linear and nonlinear gains.Starting from general reservoir theory for the atomic-field density operator, the expression for the photon distribution in single-mode laser light is determined by taking account of the influence of both linear and nonlinear gains..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 487 (1988)
Four-photon process in atomic sodium using two-photon nonresonant excitation
Zhao Shuoyan, and Zhang Peilin
Coherent radiation at 330.22/330.30nm is observed respectively as pulsed laser light at 574.42/574.53nm is focused into a heat pipe oven containing sodium vapor. It is concluded that this process is a four-wave mixing process of atomic sodium. The theoretical wavelength is found to be in agreement -with experimental reCoherent radiation at 330.22/330.30nm is observed respectively as pulsed laser light at 574.42/574.53nm is focused into a heat pipe oven containing sodium vapor. It is concluded that this process is a four-wave mixing process of atomic sodium. The theoretical wavelength is found to be in agreement -with experimental result..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 492 (1988)
High temperature glass sealing technique for He-Ne lasers
Du Jiehen, Tian Qian, Zong Weiqian, Guo Hong, and Fan Ruihe
A new method using high-frequency induction heating has been developed for sealing the glass envelope and mirrors of He-Ne lasers. The lifetime of the lasers manufactured fay this technique are over 30000 hours.A new method using high-frequency induction heating has been developed for sealing the glass envelope and mirrors of He-Ne lasers. The lifetime of the lasers manufactured fay this technique are over 30000 hours..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 496 (1988)
Emission spectra of HgX(X=Cl,Br,I)B2∑+→X2∑+ transitions in DC glow discharge
Xu Gan, and T. A. King
It was found experimentally that the resonant energy transfer and Penning process have relatively larger reaction cros ssections in HgBr + N2 and HgX2(X = Cl, Br, l)+Ar mixtures respectively. The stimulated cross sections, saturation intensities and oscillation thresholds of these transitions were calculated from experIt was found experimentally that the resonant energy transfer and Penning process have relatively larger reaction cros ssections in HgBr + N2 and HgX2(X = Cl, Br, l)+Ar mixtures respectively. The stimulated cross sections, saturation intensities and oscillation thresholds of these transitions were calculated from experimental data. The possibility for CW operation of HgX2/HgX(B-X)lasers is also discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 506 (1988)
Study of infrared fluorescence spectra and thermal shift of energy levels of Ni2+:BeAl2O4 laser crystals
Wen Genwang, and Liu Songhao
The fluorescence spectrum bandwidth, energy level position and low symmetry level splitting of Ni2+:BeAl3O4 laser crystal were measured at temperature range of 10 to 300 K with laser induced fluorescence method. Some suitable relations were adapted to describe the temperature dependence of these parameters.The fluorescence spectrum bandwidth, energy level position and low symmetry level splitting of Ni2+:BeAl3O4 laser crystal were measured at temperature range of 10 to 300 K with laser induced fluorescence method. Some suitable relations were adapted to describe the temperature dependence of these parameters..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 510 (1988)
Rapid Communications
[in Chinese]
[in Chinese], and [in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 512 (1988)
[in Chinese]
[in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 15, Issue 8, 512 (1988)
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