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Journals >
Chinese Journal of Lasers
Contents
1988
Volume: 15 Issue 7
17 Article(s)
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Research Article
A novel tunable crystal candidate Cr3+ doped beryllium hexa-aluminate (BHA:Cr
3+
)
Ma Xiaoshan, Pan Peicong, Hu Zhiwei, and Wu Guamgzhao
Beryllium hexa-aluminate crystal doped with chromium (BHA:Cr3+) has been grown for the first time. The absorption spectra and fluorescence spectra of BHA:Cr3+ have been measured. Vibronic side band of the fluorescence spectra, is from 700nm to 1000nm.
Beryllium hexa-aluminate crystal doped with chromium (BHA:Cr3+) has been grown for the first time. The absorption spectra and fluorescence spectra of BHA:Cr3+ have been measured. Vibronic side band of the fluorescence spectra, is from 700nm to 1000nm..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 403 (1988)
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Analysis on stability of Mollenstedt biprism
Fu Shufen
Regarding electrons as waves, we obtained an expression of phase changes produced by a Mollenstedt biprism. The effect of mechanical stability of the biprism on interfe-ren field vrere analyzed baaod on the expression. A scheme of a stable biprism was given and the results of electron interference and electron holograp
Regarding electrons as waves, we obtained an expression of phase changes produced by a Mollenstedt biprism. The effect of mechanical stability of the biprism on interfe-ren field vrere analyzed baaod on the expression. A scheme of a stable biprism was given and the results of electron interference and electron holography were presented with this biprism as electron beam splitter..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 408 (1988)
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Study of Y
3
Ga
5
O
12
:Cr
3+
laser crystal by means of MS-Xα method
Wen Genwang, Wang Luya, and Liu Songhao
Chis paper reports the calculation results of (CrO6)9- transition metal cluster on D3d symotetry site by means of spin unrestricted MS-Xa method. It gives out the single electronic eigenvalues and wave function, discusses the electronic structure of Y3Ga6O12:Cr2+ laser crystal and calculates the 10Dq crystal field para
Chis paper reports the calculation results of (CrO6)9- transition metal cluster on D3d symotetry site by means of spin unrestricted MS-Xa method. It gives out the single electronic eigenvalues and wave function, discusses the electronic structure of Y3Ga6O12:Cr2+ laser crystal and calculates the 10Dq crystal field parameter and the energy splitting due to low symmetry distortion of the lattice site by Slater transition state concept. The calculation results are in good agreement with the experimental results..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 412 (1988)
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Study of antilaser eye-protection glasses
Mao Sen, Mao Hanfen, and Li Wenqing
The composition of antilaser eye-protection glasses of multispectral band as well as optical, spectral characters, physical and chemical properties were studied.
The composition of antilaser eye-protection glasses of multispectral band as well as optical, spectral characters, physical and chemical properties were studied..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 417 (1988)
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Laser Manufacturing
Analysis of error sensitivity and range of 3-D displacement vector measurement
Hua Jianwen, and Chen Mingyi
Theoretical analysis of error, sensitivity and range of 3-D displacement vectormeasurement using phase comparison method are described and experimental results are offered. Some proposals for improving sensitivity are discussed.
Theoretical analysis of error, sensitivity and range of 3-D displacement vectormeasurement using phase comparison method are described and experimental results are offered. Some proposals for improving sensitivity are discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 425 (1988)
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Optieal fibre current sensor with single exposure speckle as parameter
Liang Zhenbin, Guo Sigan, Zheng Shunxuan, and Yu Yongan
A new sensing method of optical fibre ourrent is proposed and the experiment has been conducted successfully.
A new sensing method of optical fibre ourrent is proposed and the experiment has been conducted successfully..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 445 (1988)
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Mutagenesis and selection of raw starch glucoamylase-producing strains of aspergillus niger S-1 by laser irradiation
Fang Shankang, Liu Enquan, Hou Xueyuan, and Sun Tuning
In view of spectrographic analysis for DNA, a good laser mutagenic effect have been obtained by irradiation with two wavelengths (1=260nm, 2 = 266nm) from Datachrom-5000 tunable dye laser and mutant also have heen selected. The enzymatic activity of raw starch glucoamylase is increased to 27% in average and the maximum
In view of spectrographic analysis for DNA, a good laser mutagenic effect have been obtained by irradiation with two wavelengths (1=260nm, 2 = 266nm) from Datachrom-5000 tunable dye laser and mutant also have heen selected. The enzymatic activity of raw starch glucoamylase is increased to 27% in average and the maximum is 43%..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 447 (1988)
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Laser Physics
Analysis of He-Ne longitudinal Zeeman laser on basis of Racah model of Ne atom
Li Licong, and Li Gongliang
In this paper, we put forward a theory of multispectral line, singles longitudinal mode of a Zeeman laser. Using the Raeah model of Ne atom, we calculated the oscillation frequency and light intensity of a 632.8nm He-Ne longitudinal Zeeman laser and made a discussion about the results obtained.
In this paper, we put forward a theory of multispectral line, singles longitudinal mode of a Zeeman laser. Using the Raeah model of Ne atom, we calculated the oscillation frequency and light intensity of a 632.8nm He-Ne longitudinal Zeeman laser and made a discussion about the results obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 385 (1988)
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Property study of He-Ne lasers with flat discharge cross-section
Qian Meizhen, Cai Ying, Liu Peng, and Ling Yiming
In this paper measurements and theory of properties of He-Ne lasers with flat discharge cross-section are described.
In this paper measurements and theory of properties of He-Ne lasers with flat discharge cross-section are described..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 391 (1988)
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A 10 MW,ns pulse output photodissociation iodine laser ocillator-amplifier system——Design and characteristics
Xu Gan, and T. A. King
We report a small laboratory size photodissociation iodine laser oscillator-two-stage amplifier system, which can provide single mode laser output with pulse widths of 1ns~ 2s, energy of tens of mJ~10J, peak power of~10MW. Discussions are concentrated on the system design, various mode selection, pulse generation techn
We report a small laboratory size photodissociation iodine laser oscillator-two-stage amplifier system, which can provide single mode laser output with pulse widths of 1ns~ 2s, energy of tens of mJ~10J, peak power of~10MW. Discussions are concentrated on the system design, various mode selection, pulse generation techniques and their performances..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 395 (1988)
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Theoretical and experimental investigation on semiconductor laser amplifiers
Huang Dexiu, Liu Deming, Zhang Qichao, Fan Ghenjun, and Li Longqin
Semiconductor laser amplifiers of both Fabry-Perot type (FP-SLA) and traveling-wave type (TW-SLA) have been investigated theoretically and experimentally. The gain characteristics of semiconductor laser amplifier was analyzed and advantages of quasi-TW-SLA were pointed out.
Semiconductor laser amplifiers of both Fabry-Perot type (FP-SLA) and traveling-wave type (TW-SLA) have been investigated theoretically and experimentally. The gain characteristics of semiconductor laser amplifier was analyzed and advantages of quasi-TW-SLA were pointed out..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 400 (1988)
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Effects of buffer gas on stimulated Raman scattering in Pb vapor
Qi Jianping, Lou Qihong, Hou Yunsheng, Ding Zean, and Wang Runwen
Effects of buffer gas on stimulated Eaman scattering in Pb vapor are analyzed theoretically. The result shows that the effects consist of the collision between the buffer gas atoms and the Pb atoms and the absorption of the buffer gas. The dependence of Baman conversion efficiency on laser parameters is analyzed. The c
Effects of buffer gas on stimulated Eaman scattering in Pb vapor are analyzed theoretically. The result shows that the effects consist of the collision between the buffer gas atoms and the Pb atoms and the absorption of the buffer gas. The dependence of Baman conversion efficiency on laser parameters is analyzed. The calculated results are in agreement with those of the recent experiments..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 421 (1988)
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Effects of gas pressure on output of transverse flow CO
2
lasers
Wu Zhongxiang, Cu Zexiang, and Chen Liying
Based on the measured parameters of high pressure transverse flow discharge CO2 lasers and their changing rule, simulated calculations have been made on the theoretic curve of power, efficiency and coupling degree and their variation with gas pressure, which indicates that the optimum output of the CO2 laser can be obt
Based on the measured parameters of high pressure transverse flow discharge CO2 lasers and their changing rule, simulated calculations have been made on the theoretic curve of power, efficiency and coupling degree and their variation with gas pressure, which indicates that the optimum output of the CO2 laser can be obtained "at the working pressure of ~1 atm and the CW output would be cut off at~2 atm..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 431 (1988)
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New expression for hole burning on gain profile with inhomogeneous broadening
An Chengwu
A strong field at v is applied to an inhomogeneous laser medium and a very weak probing signal at v’ is used to measure the gain G(v’,Iv)in the medium. By means of the rate equation theory of laser and available mathematical approches, some results have been obtained, 晈hich can much better represent the hole burning on
A strong field at v is applied to an inhomogeneous laser medium and a very weak probing signal at v’ is used to measure the gain G(v’,Iv)in the medium. By means of the rate equation theory of laser and available mathematical approches, some results have been obtained, 晈hich can much better represent the hole burning on G-v’ curve and improve some present results of the rate equation theory..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 434 (1988)
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Gaussian mode of a resonator formed by two phase-conjugate mirrors
Liu Jinsong
By introducing the transfer matrix of phase-conjugate mirror (PCM) which has explicite frequency variable, it has been derived that the Gaussian modes and stability condition in a phase-conjugate resonator (PCR) bounded by two PCM’s which are formed via a nondegenerat four-wave mixing. The effect or frequency-flipping
By introducing the transfer matrix of phase-conjugate mirror (PCM) which has explicite frequency variable, it has been derived that the Gaussian modes and stability condition in a phase-conjugate resonator (PCR) bounded by two PCM’s which are formed via a nondegenerat four-wave mixing. The effect or frequency-flipping of PGM on the mode properties of the PCR has been discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 437 (1988)
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Optogalvanic effect and its radial dependence of rubidium with RF discharge
Zhang Xubin, Liu Bingmo, Liu Jinting, and Wang Tianjuan
Optogalvanic effect and its radial dependence of rubidium with BF discharge are reported. The comparisons between pure rubidium cell, rubidium cell with buffer gas (argon) and pure neon cell indicate that the radial dependences of optogalvanic effect are different obviously. Qualitative explanation of the U-type radial
Optogalvanic effect and its radial dependence of rubidium with BF discharge are reported. The comparisons between pure rubidium cell, rubidium cell with buffer gas (argon) and pure neon cell indicate that the radial dependences of optogalvanic effect are different obviously. Qualitative explanation of the U-type radial dependence of optogalvanic effect of rubidium cell is given..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 440 (1988)
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Study of two-photon absorption induced fluorescence from protein
Xu Yingwu, Zhang Jinru, Deng Yumei, Jiang Shoupin, Lian Shaohui, and Hui Linkai
At room temperature, the UV fluorescence due to the induced two-photon absorption from trypsin, thyrog-lobulin, hemoglobin and albumin have been observed when they are excited with the radiation of second harmonic of Q-switched Nd: YAG laser.
At room temperature, the UV fluorescence due to the induced two-photon absorption from trypsin, thyrog-lobulin, hemoglobin and albumin have been observed when they are excited with the radiation of second harmonic of Q-switched Nd: YAG laser..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 15, Issue 7, 442 (1988)
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