Journals >Chinese Journal of Lasers
Contents
1991
Volume: 18 Issue 12
13 Article(s)
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Research Article
Resonant modes in self-imaging cavities for phase-locking of laser arrays——Ⅱ. Lau cavity
[in Chinese], and [in Chinese]
On the basis of the analysis on Talbot cavity in the previous paper, we continue to simulate the mode characteristics of Lau cavity in terms of the Fox-Li treatment. It is concluded that the fundamental mode is dominant to the higher-order modes, which may exist if the order number is less than that of the array elemenOn the basis of the analysis on Talbot cavity in the previous paper, we continue to simulate the mode characteristics of Lau cavity in terms of the Fox-Li treatment. It is concluded that the fundamental mode is dominant to the higher-order modes, which may exist if the order number is less than that of the array elements divided by 4..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 890 (1991)
Photo-refractive crystal for studying solution diffusion
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Using strontium barium niobate photo-refraotive crystal as recording medium, we measured the diffusion coefficient of sucrose solution. The result was in agreement with the data in literature and the experimental conditions were discussed.Using strontium barium niobate photo-refraotive crystal as recording medium, we measured the diffusion coefficient of sucrose solution. The result was in agreement with the data in literature and the experimental conditions were discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 896 (1991)
Theoretical analysis for CW crossed-beam thermal lens with unfocused probe beam
[in Chinese], and [in Chinese]
Taking the sample cell as a thin phase plate and utilizing Fourier optica theory, a theoretical analysis for CW crossed-beam thermal lens with unfocused probe beam was proposed. Also obtained are group of the characteristic curves describing thermal lens properties, which are in agreement with experimental results.Taking the sample cell as a thin phase plate and utilizing Fourier optica theory, a theoretical analysis for CW crossed-beam thermal lens with unfocused probe beam was proposed. Also obtained are group of the characteristic curves describing thermal lens properties, which are in agreement with experimental results..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 899 (1991)
Gas sensing optical transmission characters of SnO2:ZnO film
[in Chinese], [in Chinese], and [in Chinese]
A new SnO2:ZnO film is discovered with sensing character. The relation between the transmission and the gas concertration in methanol vapor, ethanol vapor, ammonia vapor is measured. The sensing mechanism is explained.A new SnO2:ZnO film is discovered with sensing character. The relation between the transmission and the gas concertration in methanol vapor, ethanol vapor, ammonia vapor is measured. The sensing mechanism is explained..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 905 (1991)
10～20 ps ultraviolet optical probe of plasmas
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A portion of the main beam was split off to form the probe beam. This beam was frequency doubled with a KDP crystal, frequency shifted to 630nm by backward Raman scattering in DMSO, and finally frequency doubled in a BBO crystal. The probe pulse wavelength was 3l5nm, pulse width 10-20ps, and pulse energy greater than 0A portion of the main beam was split off to form the probe beam. This beam was frequency doubled with a KDP crystal, frequency shifted to 630nm by backward Raman scattering in DMSO, and finally frequency doubled in a BBO crystal. The probe pulse wavelength was 3l5nm, pulse width 10-20ps, and pulse energy greater than 0.2mJ..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 909 (1991)
Platinum pollution in phosphate laser glasses
[in Chinese], [in Chinese], and [in Chinese]
Differing from silicate laser glass, the main source of platinum in phosphate laser glass is the dissolution of platinum. The dominant step for the reaction of platinum with oxygen and the effect of melting conditions on platinum concentration in glass were determined.Differing from silicate laser glass, the main source of platinum in phosphate laser glass is the dissolution of platinum. The dominant step for the reaction of platinum with oxygen and the effect of melting conditions on platinum concentration in glass were determined..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 913 (1991)
Laser Manufacturing
Laser welding of silicon sheet
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper reports in detail the mechanism and technology of laser welding of silicon sheets, and also analyses the properties of welding seam and the factors influencing the welding quality.This paper reports in detail the mechanism and technology of laser welding of silicon sheets, and also analyses the properties of welding seam and the factors influencing the welding quality..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 939 (1991)
Laser Physics
Spectral measurement of a Raman free electron laser
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Frequency-resolved measurement of the emission from a Eaman free electron laser under superradiation condition by a microwave grating spectrometer are presented. The tunability of millimeter wave free electron laser was observed. The experimental results have shown that the central frequency of the spectra decreased wiFrequency-resolved measurement of the emission from a Eaman free electron laser under superradiation condition by a microwave grating spectrometer are presented. The tunability of millimeter wave free electron laser was observed. The experimental results have shown that the central frequency of the spectra decreased with increasing the wiggler magnetic field, which are in accordance with the theoretical predictions concerned with waveguide mode effects on the collective free electron laser..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 881 (1991)
Heat generation efficiency of solid state lasers
[in Chinese], [in Chinese], and [in Chinese]
The heat generation efficiency of slab lasers is analysed. A new method of measuring the heat generation efficiency is proposed and the measuring results for slab and rod lasers are given.The heat generation efficiency of slab lasers is analysed. A new method of measuring the heat generation efficiency is proposed and the measuring results for slab and rod lasers are given..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 885 (1991)
Nonlinear optical processes in PTP dye vapor
[in Chinese], [in Chinese], and [in Chinese]
Stimulated radiation (in the wavelength range of 340-385nm)was generated by two-photon excitation, and three-photon ionization signal via two-photon near-resonance was also measured in PTP (p-terphenyl) dye vapor. The relative nonlinear processes were discussed.Stimulated radiation (in the wavelength range of 340-385nm)was generated by two-photon excitation, and three-photon ionization signal via two-photon near-resonance was also measured in PTP (p-terphenyl) dye vapor. The relative nonlinear processes were discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 917 (1991)
Radiative transition probabilities for Ca17+and Mn22+
[in Chinese], and [in Chinese]
The investigation by Zhizhan Xu et al.of SIOM predicted[1] that it is possible that the lasing in the water window (4.376-2.332nm) will be realized with the Li-like recombination scheme using their high power laser facility. Our calculations show that the wavelengths of the transitions 5f-3d and 5d-3p in Ca17+ and Mn22The investigation by Zhizhan Xu et al.of SIOM predicted[1] that it is possible that the lasing in the water window (4.376-2.332nm) will be realized with the Li-like recombination scheme using their high power laser facility. Our calculations show that the wavelengths of the transitions 5f-3d and 5d-3p in Ca17+ and Mn22+ lie at both ends of the water window. The fine levels (n≤12,l≤5) for these two Li-like ions and the radiative transition probabilities between them are calculated..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 921 (1991)
Variable period characteristics of light propagation in a conical GRIN rod-geometrical optics analysis
[in Chinese]
In this paper based on the ray path equations, the variable period characteristics of light propagation in a conical GEIN rod are analyzed. The analytical expressiona for the period of rod are obtained and used to calculate the periods of some conical GRIN rods. The quater pitch rods and the corresponding focal lengthsIn this paper based on the ray path equations, the variable period characteristics of light propagation in a conical GEIN rod are analyzed. The analytical expressiona for the period of rod are obtained and used to calculate the periods of some conical GRIN rods. The quater pitch rods and the corresponding focal lengths are also given for GRIN rod lenses design..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 929 (1991)
Relativistic multiconfiguration Dirac-Fock calculation of fine-structure energy levels and transition wavelengths for F-like CoⅪⅩ,NiⅩⅩ,CuⅩⅪ,ZnⅩⅫ,GaⅩⅩⅢ and GeⅩⅪⅤ
[in Chinese], and [in Chinese]
In this paper, by the way of extended average level (EAL) model of relativistic multieonfiguration Dirae-Fock code, we have calculated fine-structure energies of 2S22p5, 2s2p6, 2s22p43s, 2s22p43p configuration and some transition wavelengths of 2p43s-2p43p for F-like CoⅪⅩ,NiⅩⅩ,CuⅩⅪ,ZnⅩⅫ,GaⅩⅩⅢ and GeⅩⅪⅤ ions which may bIn this paper, by the way of extended average level (EAL) model of relativistic multieonfiguration Dirae-Fock code, we have calculated fine-structure energies of 2S22p5, 2s2p6, 2s22p43s, 2s22p43p configuration and some transition wavelengths of 2p43s-2p43p for F-like CoⅪⅩ,NiⅩⅩ,CuⅩⅪ,ZnⅩⅫ,GaⅩⅩⅢ and GeⅩⅪⅤ ions which may be the candidates for lasing action. The most of the calculated values are predicted..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 18, Issue 12, 934 (1991)
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