Journals >Chinese Journal of Lasers
Contents
1985
Volume: 12 Issue 7
17 Article(s)
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Laser Devices and Laser Physics
SHG for the materials with absorption loss and amplification gain
Wang Runwen, and Ye Chao
A detailed discussion on the SHG is given for the materials with absorption loss and amplification gain. Using approximation method, the analytical solution is obtained and compared with the numerical calcalation of the coupling equations.A detailed discussion on the SHG is given for the materials with absorption loss and amplification gain. Using approximation method, the analytical solution is obtained and compared with the numerical calcalation of the coupling equations..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 385 (1985)
Determination of anisotropic properties in the active medium
Guo Guanqcan, and Xu Wenyue
We have deduced the motion equation for Stokes parameters which describe the polarization state of a light wave as it propagates in an active medium. The method to determine characteristic vectors indicating the specific anisotropie properties of the medium is also proposed.We have deduced the motion equation for Stokes parameters which describe the polarization state of a light wave as it propagates in an active medium. The method to determine characteristic vectors indicating the specific anisotropie properties of the medium is also proposed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 395 (1985)
A high repetition rate dye laser pumped by a CuCl laser
Jin Chunyang, Zhang Guiyan, Wu Zhengliang, Su Japing, Hu Qichuan, Ying Lifeng, and Lin Fucheng
The experimental results of several kinds of high repetition rate Rholamine dyes pumped by a CuCl laser are presented. The laser radiation covers about 600 A. ranging from 5630 A to 6320 A. The maximum conversion efficiency is up to 33%.The experimental results of several kinds of high repetition rate Rholamine dyes pumped by a CuCl laser are presented. The laser radiation covers about 600 A. ranging from 5630 A to 6320 A. The maximum conversion efficiency is up to 33%..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 399 (1985)
Theoretical analyses on spectral characteristics of electro-optically tuned ruby lasers
Jin Huishu, and Zhao Yanzeng
On the basis of rate equations, numerical experiments on the dynamic process of the photon density spectrum evolution in eletro-optically tuned ruby lasers with dye Q-switching have been carried out. The effect of dye Q-switching and resonant frequency selector (RFS) on wavelength char ctcri sties is analysed and the dOn the basis of rate equations, numerical experiments on the dynamic process of the photon density spectrum evolution in eletro-optically tuned ruby lasers with dye Q-switching have been carried out. The effect of dye Q-switching and resonant frequency selector (RFS) on wavelength char ctcri sties is analysed and the dye switch plays an specially important role in mode selection and line width narrowing..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 402 (1985)
Possibility about the continuously tuning of CO laser at high pressure
Wang Yumin, Gui Zenxin, Zhang Shunyi, and Chen Yuxin
On the basis of gain coefficient calculation it is shown that the frequency of the CO laser can not be continuously tuned over 5~8m region by means of increasing its pressure bacause of the resonant absorption of the B and P branches.On the basis of gain coefficient calculation it is shown that the frequency of the CO laser can not be continuously tuned over 5~8m region by means of increasing its pressure bacause of the resonant absorption of the B and P branches..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 408 (1985)
Study of FA (Ⅲ) centers in Tl+:KCl single crystals
Fang Shugan, Li Shenhua, Lin Yuanqi, Guo Zhengtai, Guo Ziyu, and Xin Wei
The FA(III)centers have been obtained by X-ray irradiation and light conversion in T1+:KC1 single crystals, its emmission band and excitation band lies from 1.3 to 1.7m and 0.9 to 1.2m with peaks at 1.5m and 1m respectively (77K). The light and thermal stability (R.T)of FA(III)centers decreases slowly in the first few The FA(III)centers have been obtained by X-ray irradiation and light conversion in T1+:KC1 single crystals, its emmission band and excitation band lies from 1.3 to 1.7m and 0.9 to 1.2m with peaks at 1.5m and 1m respectively (77K). The light and thermal stability (R.T)of FA(III)centers decreases slowly in the first few days, and then remains unchanged, the stable FA(III)centers can be finally obtained..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 412 (1985)
A measurement method for high reflectivity with two beams and a single detecting channel
Gao Qixiao
A new method for measuring high reflectivity and transmissivity is given, with which the effect of both fluctuation of light source and nonlinearity of the detecting system on the accuracy of measurement can be cancelled out. The repeatability is better than 1x10-4 at 632.8 nm and 5x10-4 at 1.15m respectively.A new method for measuring high reflectivity and transmissivity is given, with which the effect of both fluctuation of light source and nonlinearity of the detecting system on the accuracy of measurement can be cancelled out. The repeatability is better than 1x10-4 at 632.8 nm and 5x10-4 at 1.15m respectively..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 415 (1985)
Real-time measurement of lasing spectrum of semiconductor lasers
Shan Zhenguo
This paper describes a new method for real-time measurement of lasing spectrum of semiconductor lasers(ES method for short). It is useful particularly for studying characteristics of longitudinal modes and thermal and aging properties of semiconductor lasers.This paper describes a new method for real-time measurement of lasing spectrum of semiconductor lasers(ES method for short). It is useful particularly for studying characteristics of longitudinal modes and thermal and aging properties of semiconductor lasers..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 420 (1985)
Laser speckle interferometry for measurement of human tooth elastic modulus
Wu Yuiqi, Yie Delin, Zhao Yunfeng, Du Chuanshi, Wei Zitong, and Zheng Shimin
The principle, testing apparatus, test piece preparation, experimemtal method tooth results are reported, by using laser speckle interferometry for measurement of human and elastic modulus, the issues encountered and the measures taken to improve the measurement accuracy are digcsnsed.The principle, testing apparatus, test piece preparation, experimemtal method tooth results are reported, by using laser speckle interferometry for measurement of human and elastic modulus, the issues encountered and the measures taken to improve the measurement accuracy are digcsnsed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 424 (1985)
Transmission images of biological samples taken with laser-produced plasmas as X-ray sources
Lu Renxiang, Zhang Zhengquan, and Xu Meijian
Transmission images of mosquitos and microballoons have been taken with X-rays emitted rrom laser-produced plasmas as light sources, the photon energy of X-ray beiug in the range of 1-2 keV. These images are very distinct, the image resolution comes nearly to 1 micron, limited only by the recording plate itself.Transmission images of mosquitos and microballoons have been taken with X-rays emitted rrom laser-produced plasmas as light sources, the photon energy of X-ray beiug in the range of 1-2 keV. These images are very distinct, the image resolution comes nearly to 1 micron, limited only by the recording plate itself..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 429 (1985)
One-step rainbow holography with a long slit
Shan Qizhe, Chen Guicong, Mou Xingfu, Gu Jiujing, and Lin Ting
An one-step rainbow holographic process using a Fresnel lens as imaging lens is presented. A bright and sharp reconstructed image is obtained. As compared with the conventional one-step rainbow holography, this technique offers the advantage of wide field of view.An one-step rainbow holographic process using a Fresnel lens as imaging lens is presented. A bright and sharp reconstructed image is obtained. As compared with the conventional one-step rainbow holography, this technique offers the advantage of wide field of view..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 432 (1985)
[in Chinese]
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Tunable characteristics and conversion efficiency of synthesized a-NND laserdye is reported.Tunable characteristics and conversion efficiency of synthesized a-NND laserdye is reported..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 436 (1985)
[in Chinese]
[in Chinese], [in Chinese], and [in Chinese]
Raman conversion eflBeiency of DMCO solution under the action of picosecond pulses of various pumping intensities is measured. Preliminary explanation on saturation characteristics and thereshold are given.Raman conversion eflBeiency of DMCO solution under the action of picosecond pulses of various pumping intensities is measured. Preliminary explanation on saturation characteristics and thereshold are given..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 437 (1985)
[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper studios on the formation of electronically excited radical C2 d3 11a on pure Freon 22 under irradiation of a TEA CO2 laser. Six bands of Swan system have been observed.This paper studios on the formation of electronically excited radical C2 d3 11a on pure Freon 22 under irradiation of a TEA CO2 laser. Six bands of Swan system have been observed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 439 (1985)
[in Chinese]
[in Chinese], and [in Chinese]
TEM00 output of CW Nd3+: YAG laser at 1.32m have been obtained. The output power and orientation of TEM00 and multi-mode beams were measured. The laser was then tuned to 6 different transitions of 1.3188, 1.320, 1.3338, 1.3382, 1.3350, 1.3564m by means of intracavity etalons,and the output power were measured, respectiTEM00 output of CW Nd3+: YAG laser at 1.32m have been obtained. The output power and orientation of TEM00 and multi-mode beams were measured. The laser was then tuned to 6 different transitions of 1.3188, 1.320, 1.3338, 1.3382, 1.3350, 1.3564m by means of intracavity etalons,and the output power were measured, respectively..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 440 (1985)
[in Chinese]
[in Chinese], and [in Chinese]
The principle of a flight of stairs charged power supply, of which voltage can be contiuously adjusted, is described. The features of the circuit are analysed. This power supply has the advantages of voltage adjustability over wide range, simplicity and higher efficiency.The principle of a flight of stairs charged power supply, of which voltage can be contiuously adjusted, is described. The features of the circuit are analysed. This power supply has the advantages of voltage adjustability over wide range, simplicity and higher efficiency..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 442 (1985)
[in Chinese]
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper reports the double resonance optogalvanic effect in neon. The first step is 3s3p transition, and followed by that from 3p state to a higher one. The signal of such optogalvanic effect is greatly enhanced by up to two orders of magnitude with respect to the signal produced by the second step alone. Therefore.This paper reports the double resonance optogalvanic effect in neon. The first step is 3s3p transition, and followed by that from 3p state to a higher one. The signal of such optogalvanic effect is greatly enhanced by up to two orders of magnitude with respect to the signal produced by the second step alone. Therefore., the method can be used to detect more optogalvanic signals..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 7, 445 (1985)
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