Journals >Chinese Journal of Lasers
Contents
1992
Volume: 19 Issue 8
18 Article(s)
Export citation format
Research Article
High performance single pulse selector for mode-locked lasers
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The principles, design and characteristics of high performance single pulse selectors for lasers with three kinds of avalanche transistor driver are described. They have low jitter(107 shots), short delay (about 20ns), high probability of selecting single pulse (100%) , and high signal/noise ratio of selected single puThe principles, design and characteristics of high performance single pulse selectors for lasers with three kinds of avalanche transistor driver are described. They have low jitter(107 shots), short delay (about 20ns), high probability of selecting single pulse (100%) , and high signal/noise ratio of selected single pulse (103)..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 561 (1992)
Study of light damage of waveguide substrates of LN and Mg:LN by holographic method
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The results of light damage in. LN and Mg: LN substrate waveguide by holographic method are reported. The waveguide were made by Ti-diffusion and proton exchange methods. The resistance to light damage of Mg:LN is stronger than that of the pure LN, and the resistance of light damage of the waveguide by proton exchange The results of light damage in. LN and Mg: LN substrate waveguide by holographic method are reported. The waveguide were made by Ti-diffusion and proton exchange methods. The resistance to light damage of Mg:LN is stronger than that of the pure LN, and the resistance of light damage of the waveguide by proton exchange is stronger than that by Ti-diffusion..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 566 (1992)
Study of reflection and transmission characteristics of birefringent multiple layers
[in Chinese]
The reflection and transmission coefficients of the plane wave at the birefringent surface were deduced. Also developed was the expressions and numerical method to calculate the reflectance distribution, versus the polar coordinates for the multiple layers which consist of several birefrinsrent films or substrates.The reflection and transmission coefficients of the plane wave at the birefringent surface were deduced. Also developed was the expressions and numerical method to calculate the reflectance distribution, versus the polar coordinates for the multiple layers which consist of several birefrinsrent films or substrates..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 570 (1992)
Study on the process of SiH4breakdown irradiated by frequency tunable TEA CO2laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The process of SiH4/Ar breakdown irradiated by frequency tunable TEA CO2 laser has been studied. The breakdown threshold of SiH4/Ar has been measured as a funotiou. of laser energy, laser frequency and gas pressure. Based on the experimental results, the physical process of 8iH4/Ar breakdown is proposed to be a processThe process of SiH4/Ar breakdown irradiated by frequency tunable TEA CO2 laser has been studied. The breakdown threshold of SiH4/Ar has been measured as a funotiou. of laser energy, laser frequency and gas pressure. Based on the experimental results, the physical process of 8iH4/Ar breakdown is proposed to be a process of optic-breakdown through resonant absorption of laser beams..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 624 (1992)
Application of powder test to the study of new organic materials for frequency doubling
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
By Kurtz's powder technique^ we have studied the SHG properties of fifty organic compounds, which include derivatives of p-ni troaniline, 2,4-dinitroaniline, p-ni troo-phenyldia-mine, diphenyl, azobenzene, diphenyl ether and diphenyl sulfide. Eight of them are found tc be promising practical nonlinear organic materBy Kurtz's powder technique^ we have studied the SHG properties of fifty organic compounds, which include derivatives of p-ni troaniline, 2,4-dinitroaniline, p-ni troo-phenyldia-mine, diphenyl, azobenzene, diphenyl ether and diphenyl sulfide. Eight of them are found tc be promising practical nonlinear organic materials..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 627 (1992)
Biomedical Photonics and Laser Medicine
Fluorescence study on aluminum sulfonated phthalocyanine distribution in a transplanted mouse sarcoma
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The fluorescence quantum yield of new photosensitizer-aluminum sulfonated phthalosyanine (AISPC) was measured as 0.53, 21 times higher than that of HPD. which shows that AISPC has potential usage in tumor detection. In vivo measurement on mouse by using He-Ne laser induced fluorescence showed that, AISFC can selectivelThe fluorescence quantum yield of new photosensitizer-aluminum sulfonated phthalosyanine (AISPC) was measured as 0.53, 21 times higher than that of HPD. which shows that AISPC has potential usage in tumor detection. In vivo measurement on mouse by using He-Ne laser induced fluorescence showed that, AISFC can selectively retain in 8-180 tare cm a, and the maximum tumor; normal tissue ratio achieved 24-36 h after AISPC injection is about 2.5:1..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 633 (1992)
Biological effects of Q-switched Nd:YAG laser capsulotomy on the rabbit eye
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Nd:TAG laser of 3mJ, 10ns, and 15um was used to make 30 points of anterior capsulotomy arranged in a circle on the lenses of 14 chinchilla rabits (28 eyes). Tonometrics, anterior segment fluorescein angiographies, aqueous protein centents, and ERG and Mstologica] examinations were done at intervals before and after theNd:TAG laser of 3mJ, 10ns, and 15um was used to make 30 points of anterior capsulotomy arranged in a circle on the lenses of 14 chinchilla rabits (28 eyes). Tonometrics, anterior segment fluorescein angiographies, aqueous protein centents, and ERG and Mstologica] examinations were done at intervals before and after the operation. The mechanism of IOP elevation after operation was discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 637 (1992)
Holography and Information Processing
Nonlinear holographic phase difference amplification with high magnification
[in Chinese]
Nonlinear holographic interferometer is combined with multi-path holographic interfero meter ,and a phass object is insarted in a combination of Mach-Zehnder interferometer and Twyman-Green interferometer, and the phase difference is amplified. Higher magnification may be obtained with this method than that in nonlineaNonlinear holographic interferometer is combined with multi-path holographic interfero meter ,and a phass object is insarted in a combination of Mach-Zehnder interferometer and Twyman-Green interferometer, and the phase difference is amplified. Higher magnification may be obtained with this method than that in nonlinear holographic interferometer. Finally, the experimental results are given..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 598 (1992)
Investigations of methods for evaluation and readout of holographic interferograms
[in Chinese], and [in Chinese]
This paper hag reviewed the existing methods of evaluation and readout of holo-graphic interferograms, and described the two important ways: Zygo interferometer readout system and interferograms floading method.This paper hag reviewed the existing methods of evaluation and readout of holo-graphic interferograms, and described the two important ways: Zygo interferometer readout system and interferograms floading method..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 602 (1992)
Laser Manufacturing
Study on induced doping to semiconductor by e-beam controlled discharge CO2laser
[in Chinese], [in Chinese], and [in Chinese]
The pulse energy of c-bsam controlled disoharge CO2 lagsr is 50 J. The diameter of light spot is 60 ram and after being foeusad it bscomes to 20 mm. The induced doping of stibium (Sb) or aluminium (Al) in silicon (Si) is carried out by CO2 laser. A shallower of p-n janctionwith a diamatar of 10-15mm (mix. 20 mm) and a The pulse energy of c-bsam controlled disoharge CO2 lagsr is 50 J. The diameter of light spot is 60 ram and after being foeusad it bscomes to 20 mm. The induced doping of stibium (Sb) or aluminium (Al) in silicon (Si) is carried out by CO2 laser. A shallower of p-n janctionwith a diamatar of 10-15mm (mix. 20 mm) and a dapth of 0.2-0.7um is obtained. Photo-voltage of p-n junction is about 500 mV..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 606 (1992)
CuBr vapor laser used as a brightness amplifier in high speed photography
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The CuBr vapor lasor was usad for the first time as a brightnass amplifier in high speed photography. Bach pictures was esposed for 30 ns and at intuivals of 50 μs.The CuBr vapor lasor was usad for the first time as a brightnass amplifier in high speed photography. Bach pictures was esposed for 30 ns and at intuivals of 50 μs..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 610 (1992)
Influence of rare-earth metal oxide coating on the structure and properties of laser strengthened area of cast iron
[in Chinese], [in Chinese], and [in Chinese]
The influence of rare-earth metal oxide coating on the process of laser strengthening of east iron was studied systematically. It was shown that rare-earth metal oxide effi-cientely improve the structure and wear resistance of laser strengthened area.The influence of rare-earth metal oxide coating on the process of laser strengthening of east iron was studied systematically. It was shown that rare-earth metal oxide effi-cientely improve the structure and wear resistance of laser strengthened area..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 613 (1992)
Nonequilibrium Mg-Al alloys produced by laser cladding
[in Chinese]
Three compositions Mg-Al laser cladding alloys have bean obtained on pure Mg substrate, preliminary p hase constitutions were identified, the effect of laser processing parameters upon the microstructure was investigated. The results indicates that the nonequilibrium Mg alloys are different from the corresponding equilThree compositions Mg-Al laser cladding alloys have bean obtained on pure Mg substrate, preliminary p hase constitutions were identified, the effect of laser processing parameters upon the microstructure was investigated. The results indicates that the nonequilibrium Mg alloys are different from the corresponding equilibrium alloys to a great extent in respacL of phase constitutions, fractions of phases and solid solubility due to the quick cooling associated with laser cladding. The constitutions and solid solubility due to the quick cooling associated with laser cladding. The constitutions and solid solubility can be controlled by changing the laser processing parameters in order to yield the nonequilibrium alloys with desired microstructure and properties..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 618 (1992)
Laser Physics
Radiative transition probabilities for Li-like Si
[in Chinese], [in Chinese], and [in Chinese]
The electric dipole radiative transition, probabilities between levels nili - nklk (ni<5, nk<12)for Li-like Si have been calculated within multi-configuration Dirac-Fock framework, and the radiative decay rates of the levels (n<6) were obtained. The new regularity was found for the transition of Li-like Si.The electric dipole radiative transition, probabilities between levels nili - nklk (ni<5, nk<12)for Li-like Si have been calculated within multi-configuration Dirac-Fock framework, and the radiative decay rates of the levels (n<6) were obtained. The new regularity was found for the transition of Li-like Si..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 575 (1992)
Dipole squeezing of an atom driven by a single-mode thermal radiation field
[in Chinese], and [in Chinese]
This paper investigates the dipole squeezing of a two-level atom interacting with a single-mode thermal radiation field at thermal equilibrium in a ideal cavity, and discusses the influence of the temperatures of the cavity on the dipole squeezing.This paper investigates the dipole squeezing of a two-level atom interacting with a single-mode thermal radiation field at thermal equilibrium in a ideal cavity, and discusses the influence of the temperatures of the cavity on the dipole squeezing..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 580 (1992)
Relativistic multi-configuration Dirac-Fock calculation of fine-structure energy levels and transition wavelengths from F-like ions of 33≤Z≤40
[in Chinese]
By means of extended average level model of relativistic multi-configuration Dirac-Fosk code, we have calculated 33 fine-structuie energy levels of 2s22p5, 2s2p6, 2s22p3s, 2s22p43p configuration and 54 transition wavelengths of 3s-3p for IP-like ions of 33≤Z≤40, which may be the candidates for lasing action. Greater paBy means of extended average level model of relativistic multi-configuration Dirac-Fosk code, we have calculated 33 fine-structuie energy levels of 2s22p5, 2s2p6, 2s22p3s, 2s22p43p configuration and 54 transition wavelengths of 3s-3p for IP-like ions of 33≤Z≤40, which may be the candidates for lasing action. Greater part of the calculated values are firstly predicted..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 584 (1992)
Absorption spectra of rare-earth ion doped glasses
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The absorption spectra have been studied for Sm8, Er3+, Dy3+, Ho3+ doped borosilicate and phosphate glasses, and infrared speetroscopy were used to determine transmission.The absorption spectra have been studied for Sm8, Er3+, Dy3+, Ho3+ doped borosilicate and phosphate glasses, and infrared speetroscopy were used to determine transmission..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 589 (1992)
Materials and Thin Films
Spectral and lasing properties of new dyes in ultraviolet region
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper studies the absorption spectra, fluorescence spectra, quantum yield, fluorescence lifetime, laser energy conversion efficiency, and laser tunable range of oxadizole derivatives and 1, 4-Bis (4'-Fluor -1' -aoetenyl phenyl) benzene - a new ultraviolet laser dyes; and discusses the spectral and lasing pThis paper studies the absorption spectra, fluorescence spectra, quantum yield, fluorescence lifetime, laser energy conversion efficiency, and laser tunable range of oxadizole derivatives and 1, 4-Bis (4'-Fluor -1' -aoetenyl phenyl) benzene - a new ultraviolet laser dyes; and discusses the spectral and lasing properties related to the structure..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 8, 593 (1992)
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20