Journals >Chinese Journal of Lasers
Contents
1986
Volume: 13 Issue 4
20 Article(s)
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Research Article
Laser Devices and Laser Physics
Characteristics of picosecond pulses generated from synchronously pumped dye laser system——The third order expansion of gain of mode-locked equation and its solution
Bao Xiaoyi, and Guan Xinan
In this paper, we present the third order expansion of gain of mode-locked equation, and solved the equation with Lagrange multiplier method. The results provide) simple analytic expressions for the pulsewidth, pulse intensity and delay (which is the advance of the pump pulse relative to the dye pulse) in synchronouslyIn this paper, we present the third order expansion of gain of mode-locked equation, and solved the equation with Lagrange multiplier method. The results provide) simple analytic expressions for the pulsewidth, pulse intensity and delay (which is the advance of the pump pulse relative to the dye pulse) in synchronously pumped dye laser. They can explain satisfactorily some experimental results[4]..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 193 (1986)
Stimulated Raman scattering of unpolarized long pulse XeCl excimer laser radiation in H2
Lou Qihong, Yuan Yifeng, Qi Jianping, Wei Yunrong, Ding Aizhen, and Dong Jinxing
Stimulated Raman scattering (SRS) experiments in hydrogen were performed with a eollimated beam from an X-ray preionization discharge XeCl laser operating at 308 nm. The photodiode output profile S1, S2 and S3 stoken lines were observed. The reduction, of beam spread angle and pulse duration of SRS were analysed theoreStimulated Raman scattering (SRS) experiments in hydrogen were performed with a eollimated beam from an X-ray preionization discharge XeCl laser operating at 308 nm. The photodiode output profile S1, S2 and S3 stoken lines were observed. The reduction, of beam spread angle and pulse duration of SRS were analysed theoretically..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 197 (1986)
Investigation of Ne optogalvanic spectra in short wave lenth band of visible region
Liu Yezhou, Huang Zhengdong, Lu Jie, and Wu Dayuan
Optogalvanie spectra of Ne has been investigated with a coumarin 460 dye laser, and up to 30 lines have been obtained in the wave band between 451 mm and 472 nm. The error of wavelength measurement is within 0.02 nm.Optogalvanie spectra of Ne has been investigated with a coumarin 460 dye laser, and up to 30 lines have been obtained in the wave band between 451 mm and 472 nm. The error of wavelength measurement is within 0.02 nm..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 200 (1986)
Induced refractive index change resulted from special three-wave mixing
Liu Dun, He Guangsheng, and Liu Songhao
Based on nonlinear coupled-wave theory, the existence of optical Pockels effect on the condition of special three-wave mixing is shown theoritically. The physical conditions for this effect are also derived.Based on nonlinear coupled-wave theory, the existence of optical Pockels effect on the condition of special three-wave mixing is shown theoritically. The physical conditions for this effect are also derived..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 203 (1986)
Two-pass amplification atomic iodine laser amplifier
Chen Shisheng, E. Fill, and G. Brederlow
In this paper, we report the experimental results of a two-pass amplification atomic iodine laser amplifier. For an iodine amplifier working under the condition lower than those in the saturation region, two-pass amplification can increase the efficiency of the iodine laser amplifier obviously.Besides,we found that He In this paper, we report the experimental results of a two-pass amplification atomic iodine laser amplifier. For an iodine amplifier working under the condition lower than those in the saturation region, two-pass amplification can increase the efficiency of the iodine laser amplifier obviously.Besides,we found that He is the best among He, Ar, SF6 usually used as buffer gases in iodine lasers. It has obvious advantages especially in reducing the beam deformation produced by optical pumping and in holding beam direction..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 207 (1986)
Generation of electro-magnetic oscillation in surface multi-junction MOMOM
Liao Shiqiang, and Wang Yuzhu
An integrated surface multi-junction MOMOM(metal-oxide-metal-oxide-metal) is reported and coherent electro-magnetic oscillation is observed in the low frequency range.An integrated surface multi-junction MOMOM(metal-oxide-metal-oxide-metal) is reported and coherent electro-magnetic oscillation is observed in the low frequency range..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 212 (1986)
Manifestation of rotational ndnequilibrium in a CW DF chemical laser
Sang Fengting, Huang Ruiping, Yuan Qinian, Zhuang Qi, and Zhang Cunhao
The rotational nonequilibrium phenomenon in a CW DF chemical laser was experimentally studied. The dual-peak character in the output spectral intensity profile was obterved with a fast mixing nozzle for the first time. The same phenomenon does not occur with slow mixing nozzles, nor with HF as lasant.The rotational nonequilibrium phenomenon in a CW DF chemical laser was experimentally studied. The dual-peak character in the output spectral intensity profile was obterved with a fast mixing nozzle for the first time. The same phenomenon does not occur with slow mixing nozzles, nor with HF as lasant..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 216 (1986)
Growth and application of single crystals of metal borides and carbides
Hou Yinchun, Otani Shigeki, Tanaka, and Takho Ishitzawa Yoshio
The preparation of large single crystals of rare earch metal borides and transition metal carbides with homogeneous composition and high purity is given with VC cryatals taken as an example.The preparation of large single crystals of rare earch metal borides and transition metal carbides with homogeneous composition and high purity is given with VC cryatals taken as an example..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 218 (1986)
A series of new laser dyes in near UV region —— 2-substituted phenyl-5-biphenyl oxazoles
Li Xiang, Gao Zhenheng, Wu Aiping, and Wu Lihua
The laser characteristics of a series of substituted PBO are investigated. Some of them exhibit higher conversion efficiencies than PBO and thier tuning ranges are between 378-429.2 nm. The effects of substituents on laser characteristics are discussed.The laser characteristics of a series of substituted PBO are investigated. Some of them exhibit higher conversion efficiencies than PBO and thier tuning ranges are between 378-429.2 nm. The effects of substituents on laser characteristics are discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 222 (1986)
Tunable directional spatial filtering
Zhu Ziqiang, Zou Yongjian, and Xu Yu
Linear structures in the pictures can be enhanced by using a Pabry-Perot etalon in their image planes. The directionality and spatial frequency enhanced are tunable. This paper discusses the principle of this method which has been proved experimentally. The obtained results have been compared with those of some other mLinear structures in the pictures can be enhanced by using a Pabry-Perot etalon in their image planes. The directionality and spatial frequency enhanced are tunable. This paper discusses the principle of this method which has been proved experimentally. The obtained results have been compared with those of some other methods of spatial filtering..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 225 (1986)
Theoretical analysis of a high precision laser alignment instrument
Yu Keming, and Fan Yuzhen
A new theoretical basis of novel laser alignment instrument is put forward. It proves that the position of the basic line will not be influenced when the laser beam has translation and angular motion. This character is very important in increasing the precision of alignment instruments and the analysis is in good agreeA new theoretical basis of novel laser alignment instrument is put forward. It proves that the position of the basic line will not be influenced when the laser beam has translation and angular motion. This character is very important in increasing the precision of alignment instruments and the analysis is in good agreement with the experement results..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 230 (1986)
Polarization characters of glass corner-cube reflector
XU Huaifang
As usual an axially incident linearly polarized light beam reflected by a glass corner-cube reflector (OCR) will(become an elliptic polarized light. There are two particular azimuth angles. At these angles the linearly polarized light beam incident at the OCR will still be a linearly polarized light when it goes out ofAs usual an axially incident linearly polarized light beam reflected by a glass corner-cube reflector (OCR) will(become an elliptic polarized light. There are two particular azimuth angles. At these angles the linearly polarized light beam incident at the OCR will still be a linearly polarized light when it goes out of the OCR except that the plane of the beam polarization has been varied. In this paper we calculated these two paticular azimuth angles and the variations of the plane of the out-going beams. These results were proved experimentally..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 233 (1986)
CO2 laser welding of Si-steel Q112B thin plate
[in Chinese], and [in Chinese]
The silicon steel Q112B plate of 0.35mm thickness was welded with a low power CW CO2 laser. The bending property, microstructure, composition and fracture appearance of the joints were determined and compared to those of the joints made by other welding techniques.The silicon steel Q112B plate of 0.35mm thickness was welded with a low power CW CO2 laser. The bending property, microstructure, composition and fracture appearance of the joints were determined and compared to those of the joints made by other welding techniques..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 237 (1986)
Determination of rotation center and resistance center of tooth using holographic interferometry
Wang Shifan, and Liu Fuxiang
Spatial motion of a tooth produced by orthodontic forces is discussed in this paper. Rotation center and resistance center of the tooth are computed from parameters obtained by observing fringe patterns on five chosen points.Spatial motion of a tooth produced by orthodontic forces is discussed in this paper. Rotation center and resistance center of the tooth are computed from parameters obtained by observing fringe patterns on five chosen points..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 241 (1986)
LXJ laser flow cytometry and its application
Xu Songlin, and Yang Touli
In this paper, the principleof of cell analytical technique and device structure based on cell fluorescence and scattered light by laser radiation are described. Some methods to collect and process experimental data are presented.In this paper, the principleof of cell analytical technique and device structure based on cell fluorescence and scattered light by laser radiation are described. Some methods to collect and process experimental data are presented..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 245 (1986)
LiF: -2 Q-switched Nd3+:phosphate-glass laser oscillator
Zhuang Dounan, Zhang Guifen, and Lin Weiping
Using color center LiF as Q switch of Nd3+: phosphate-glass laser, a stable high power laser has been obtained. This paper discusses some ways to increase the probability of smooth pulses, to stabilize the smooth pulses and to increase the modulation depth of mode-locking pulses.Using color center LiF as Q switch of Nd3+: phosphate-glass laser, a stable high power laser has been obtained. This paper discusses some ways to increase the probability of smooth pulses, to stabilize the smooth pulses and to increase the modulation depth of mode-locking pulses..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 249 (1986)
In this paper we report a long pulse Xenon ion laser at 3645 nm. The FWHM of laser beam is 10 μs, the output of each pulse at 3645 nm is about 3 mJ.
Yang Yuanlong, Kong Qinggen, Ye Yanming, and Li Fuming
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 251 (1986)
[in Chinese]
Zhang Tao
It is possible to achieve optical bistability in some nonlinear optical materials. This based mainly is on the analysis of transmissivity change of color center crystals caused by resonant optical orientation (ROO), and no feedback-mirror is required in these systems.It is possible to achieve optical bistability in some nonlinear optical materials. This based mainly is on the analysis of transmissivity change of color center crystals caused by resonant optical orientation (ROO), and no feedback-mirror is required in these systems..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 253 (1986)
[in Chinese]
Huang Zhangyong, Zheng Neng, Yang Dewei, and Li Ming
A Y- branch waveguide switch and modulator using total internal reflection is made. The extinction ratio is 80.6%, phase voltage is 13.5V for TM mode. The calculated value of 3dB band width is 2.12 GHz and modulation experiments were made.A Y- branch waveguide switch and modulator using total internal reflection is made. The extinction ratio is 80.6%, phase voltage is 13.5V for TM mode. The calculated value of 3dB band width is 2.12 GHz and modulation experiments were made..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 4, 255 (1986)
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