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Journals >
Chinese Journal of Lasers
Contents
1985
Volume: 12 Issue 11
21 Article(s)
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[in Chinese]
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 1 (1985)
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Laser Devices and Laser Physics
Fourier-transform holographic diffraction interferometry: principle
Liu Liren
By using Fourier-transform holograms as coded masks in the coded grating Fourier-transform diffraction interferometry with extended white light illumination[4] a new kind of Fourier-spectrum diffraction interferometry is thus realized. Any expected form of interference can be easily yielded according to the pattern rec
By using Fourier-transform holograms as coded masks in the coded grating Fourier-transform diffraction interferometry with extended white light illumination[4] a new kind of Fourier-spectrum diffraction interferometry is thus realized. Any expected form of interference can be easily yielded according to the pattern recorded in the hologram used. The performance is analysed in detail by virtue of the backward impulse response..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 641 (1985)
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The spectral characteristics of a double frequency Ronchi grating and the application in image processing
Zhou Jin, and Gao Wenqi
A double frequency Bonchi grating is prepared by overlapping two Rouchi gratings of different spatial frequencies. In this paper , the spectral characteristics of such grating is discussed. We used it as a filter to get the first and second order differential processing or to recover images smeared by uniform motion.
A double frequency Bonchi grating is prepared by overlapping two Rouchi gratings of different spatial frequencies. In this paper , the spectral characteristics of such grating is discussed. We used it as a filter to get the first and second order differential processing or to recover images smeared by uniform motion..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 648 (1985)
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Study on irradiation of micromonospora echinospora with copper vapor laser light
Wu Zhenchang, Yu Hong, Ying Weijun, Du Zhuhuan, Chen Xuewang, Shi Baoju, Sun Wei, Yao Zhixing, and Wang Yongjiang
High yielding strain of micromonospora echinospora was obtained by irradiation with copper vapor laser light for 90 minutes. The surface of the spores after irradiation was unchanged when it was observed with a scanning electronmicroscope.
High yielding strain of micromonospora echinospora was obtained by irradiation with copper vapor laser light for 90 minutes. The surface of the spores after irradiation was unchanged when it was observed with a scanning electronmicroscope..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 654 (1985)
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Velocity distribution measurement of atomic beams by means of atomic beam deflection under resonance light pressure
Wang Yuzhu, Cheng Yudan, Zhou Shanyu, Huang Weigang, and Liu Liang
The measurement is reported of the velocity distribution in an atomic beam by means of atomic beam deflection under resonance light pressure. Both theoretical analysis and experimental results are given.
The measurement is reported of the velocity distribution in an atomic beam by means of atomic beam deflection under resonance light pressure. Both theoretical analysis and experimental results are given..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 658 (1985)
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Laser Raman spectra of hemotoporphyrin derivative molecules
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper reports laser Eaman studies for determination of three samples of hemotoporphyrin derivatives. It has been shown that most of Eaman spectra occur between 570 em"1 and 1640 cm-1. The Baman frequencies of samples having different curative effect show a little difference. This probably indicates that porph
This paper reports laser Eaman studies for determination of three samples of hemotoporphyrin derivatives. It has been shown that most of Eaman spectra occur between 570 em"1 and 1640 cm-1. The Baman frequencies of samples having different curative effect show a little difference. This probably indicates that porphyrin rings connect different sidechain..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 661 (1985)
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Longitudinal-mode behavior of stripe-geometry semiconductor lasers with a very long cavity
Shen Feng, Xie Jingshan, and Guo Changzhi
The longitudinal-mode behaviors of proton-bombarded stripe-geometry GaAs-GaAlAs laser with a very long cavity have been investigated experimentally and theoritically. It has been found that the devices with a long cavities can maintain stable single longitudinal mode operation over wide current range above threshold.
The longitudinal-mode behaviors of proton-bombarded stripe-geometry GaAs-GaAlAs laser with a very long cavity have been investigated experimentally and theoritically. It has been found that the devices with a long cavities can maintain stable single longitudinal mode operation over wide current range above threshold..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 664 (1985)
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Dual-wavelength oscillation of semiconductor lasers in external cavities
Chen Jianguo
Dual-wavelength oscillation of a semiconductor laser in an external cavity has been observed. This phenomenon has been attributed to the interference of the two feedback beams, of which one pass through the active layer and the other through the cladding layer (s). The modulation phenomenon on the tuning curve of the t
Dual-wavelength oscillation of a semiconductor laser in an external cavity has been observed. This phenomenon has been attributed to the interference of the two feedback beams, of which one pass through the active layer and the other through the cladding layer (s). The modulation phenomenon on the tuning curve of the tunable semiconductor laser in the external cavity has therefore been explained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 668 (1985)
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A compact long lifetime XeCl excimer laser
Liu Dawei
Investigations on operating parameters and lifetime of a small XeCl excimer laser using an improvrd corona type preionizer are reported.
Investigations on operating parameters and lifetime of a small XeCl excimer laser using an improvrd corona type preionizer are reported..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 672 (1985)
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An electro-optical stabilizer for pulsed laser output
Hu Qiquan, Su Haicheng, Tin Lifeng, and Yuan Guoxiong
An E-0 stabilizer for pulsed laser output applicable to many types of pulsed lasers has been developed. We present here both the operational principle and the expremental results. Its insertion loss is 20%. Using this device the pulsed laser output fluctuation can be decreased from more than 10% to less than 2%.
An E-0 stabilizer for pulsed laser output applicable to many types of pulsed lasers has been developed. We present here both the operational principle and the expremental results. Its insertion loss is 20%. Using this device the pulsed laser output fluctuation can be decreased from more than 10% to less than 2%..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 675 (1985)
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Attenuation characteristics of 10.6 μm laser light through dust-storm
Quan Xuecheng
A theoretical analysis of the attenuation coefficient and its modification of 10.6 m laser beam passing through the dust-storm has been made with an approximate method. A series of results of digital calculation for the samples of dust-storm in desert area were obtained by using electronic computer. The result shows th
A theoretical analysis of the attenuation coefficient and its modification of 10.6 m laser beam passing through the dust-storm has been made with an approximate method. A series of results of digital calculation for the samples of dust-storm in desert area were obtained by using electronic computer. The result shows that under the ordinary dust-storm weather condition, the attenuation coefficient is mainly within the range of 3~5db/km, and the maximum is about 7db/km..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 678 (1985)
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Distortion of windows of vacuum spatial filters
Wang Guiying, Zhang Mingke, and Zhong Zherping
The distortion of the windows of spatial filters under the vacuum condition and the atmospheric state has been measured by using lateral transverse shearing interf erometry and holographic interferometry. The distortion in the central area of the vacuum spatial filter is less than 0.1, and that periphery is about 0.41.
The distortion of the windows of spatial filters under the vacuum condition and the atmospheric state has been measured by using lateral transverse shearing interf erometry and holographic interferometry. The distortion in the central area of the vacuum spatial filter is less than 0.1, and that periphery is about 0.41. And the intensity distribution of the laser beam in focal volume is given by means of holographic reconstructing image and numerical processing methods. The nonlinear effect for high power laser beams is also computed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 683 (1985)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A digital scanning wavemeter for lasers is described. The accuracy for laser wavelength measurement is 2×10-7.
A digital scanning wavemeter for lasers is described. The accuracy for laser wavelength measurement is 2×10-7..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 688 (1985)
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[in Chinese]
[in Chinese], and [in Chinese]
A passively mode-locked Nd:YAG laser with unstable confocal resonater is reported. The volume was 1.6cm3. Single pulses of 6.5mj energy, 20 ps duration and a divergence close to the diffraction limit were obtained.
A passively mode-locked Nd:YAG laser with unstable confocal resonater is reported. The volume was 1.6cm3. Single pulses of 6.5mj energy, 20 ps duration and a divergence close to the diffraction limit were obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 691 (1985)
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[in Chinese]
[in Chinese]
The necessary conditions under wich saturated absorption of molecules inside the cavity could be used for laser mode selection are discussed. A tunable length of 1.6 meter has been achieved by means of saturated absorption mode selection in 129I2.
The necessary conditions under wich saturated absorption of molecules inside the cavity could be used for laser mode selection are discussed. A tunable length of 1.6 meter has been achieved by means of saturated absorption mode selection in 129I2..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 692 (1985)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Focusing position in Raman cells for pumping light is adjusted carefully. The intensity for backward Stokes light is increased, and pump depletion is produced. Two isolated pulses appear for the forward Stokes light.
Focusing position in Raman cells for pumping light is adjusted carefully. The intensity for backward Stokes light is increased, and pump depletion is produced. Two isolated pulses appear for the forward Stokes light..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 694 (1985)
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[in Chinese]
[in Chinese]
This paper describes the measurement of carrier lifetime of GaAs/GaAlAs DH lasers. Simplified experimental system without high speed detecter and very broad band amplifier is used.
This paper describes the measurement of carrier lifetime of GaAs/GaAlAs DH lasers. Simplified experimental system without high speed detecter and very broad band amplifier is used..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 695 (1985)
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[in Chinese]
[in Chinese], [in Chinese], and [in Chinese]
The reaction between methyl alcohol and ammonia on the surface of A1203 was induced by a low power CW CO2 laser. Hexamethyleno tetramine (uroptopin) as the product has been identified by IB and nuclear magnetic resonance methods.
The reaction between methyl alcohol and ammonia on the surface of A1203 was induced by a low power CW CO2 laser. Hexamethyleno tetramine (uroptopin) as the product has been identified by IB and nuclear magnetic resonance methods..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 697 (1985)
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[in Chinese]
[in Chinese]
A fast algorithm for holographic, interferometrior determination of three-dimensional minute displacements with a single hologram is discussed. Also discussed are some problems related to this fast algorithm.
A fast algorithm for holographic, interferometrior determination of three-dimensional minute displacements with a single hologram is discussed. Also discussed are some problems related to this fast algorithm..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 699 (1985)
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[in Chinese]
[in Chinese]
The ratio between the brightness of reconstructed images of the reflected and transmitting waves depends on the intensity ratio of the two waves. This paper studies the relationship between the mentioned ratio and the energy reflectivity on the reflecting plane. It is proved that if the given energy reflectivity is a l
The ratio between the brightness of reconstructed images of the reflected and transmitting waves depends on the intensity ratio of the two waves. This paper studies the relationship between the mentioned ratio and the energy reflectivity on the reflecting plane. It is proved that if the given energy reflectivity is a little higher than 20%, the brightnesses of the two kinds of images will be nearly equal to each other..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 701 (1985)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 11, 703 (1985)
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Laser Devices and Laser Physics