Contents
1986
Volume: 6 Issue 4
14 Article(s)
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Research Article
Atmospheric Optics and Oceanic Optics
Theory of laser beam displacement in turbulent atmosphere
ZHANG YIXIN, SONG ZHENGFANG, and GONG ZHIBEN
The displacement of a spatially partial coherent light beam propagating through turbulent atmosphere has been studied by assuming Gaussian distribution of the wave complex amplitude. The formula of the beam displacement was obtained, which agrees with experimental data in both weak and strong intensity fluctuation regiThe displacement of a spatially partial coherent light beam propagating through turbulent atmosphere has been studied by assuming Gaussian distribution of the wave complex amplitude. The formula of the beam displacement was obtained, which agrees with experimental data in both weak and strong intensity fluctuation regions..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 373 (1986)
Holography
Coded grating Biter and its application
KANG HUI, and MU GUOGUANG
This paper presents a concept on coded grating. Analyses indicate that properties of output images are effected by the filter of 1 - D coded grating. We also present some of its application.This paper presents a concept on coded grating. Analyses indicate that properties of output images are effected by the filter of 1 - D coded grating. We also present some of its application..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 348 (1986)
Determination of deformation direction by shearing holographic interferometry
XING YINGJIE, WANG WENCHAO, and FAN SHUZHONG
A method for determining the directions of deformation in double exposure holographic interferometry is introduced. The technique requires to move the holographic plate in the interval between exposures and thus it can be thought as a shearing holographic interferometry. Experimental demonstrations of this method are aA method for determining the directions of deformation in double exposure holographic interferometry is introduced. The technique requires to move the holographic plate in the interval between exposures and thus it can be thought as a shearing holographic interferometry. Experimental demonstrations of this method are also presented..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 355 (1986)
Instrumentation, Measurement and Metrology
An interferometric method for measuring optical spherical surfaces using holographic phase conjugate compensation
ZOU ZHENSHU, LIAO JIANGEONG, GU YUNAN, and GU QUWU
This paper proposes a now intorferometric method for measuring errors of optical spherical surfaces and their radii. The fundamental principle of the method is discribed in detail and the experimental results are given. Features of this method are desoussed.This paper proposes a now intorferometric method for measuring errors of optical spherical surfaces and their radii. The fundamental principle of the method is discribed in detail and the experimental results are given. Features of this method are desoussed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 360 (1986)
Lasers and Laser Optics
Modulated photoelectric spontaneous magnetic field in a laser plasma
ZHU SHITONG, and SHeN WENDA
The spontaneous magnetic field associated with photoelectric effect in a laser plasma is studied. The analytic solution for the spontaneous magnetic field temporarily and spatially modulated under oblique incidence of s-polarized light into a static isothermal plasma is obtained.The spontaneous magnetic field associated with photoelectric effect in a laser plasma is studied. The analytic solution for the spontaneous magnetic field temporarily and spatially modulated under oblique incidence of s-polarized light into a static isothermal plasma is obtained..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 314 (1986)
Study of a ring dye laser with colliding pulse mode-locking
WANG QINGYUE, XING QIRONG, XIAnG WANGHUA, GONG ZHENGLE, ZHANG RUEBING, and ZHANG CHEN
This paper presents results of the study of a ring dye laser which is colliding pulse mode-looked. The relationship between the concentration of DODCI, pumping power and pulse width is summarized here. A nearly transform-limit pulse width of 90fs is has been obtained.This paper presents results of the study of a ring dye laser which is colliding pulse mode-looked. The relationship between the concentration of DODCI, pumping power and pulse width is summarized here. A nearly transform-limit pulse width of 90fs is has been obtained..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 320 (1986)
Analysis of a quasi-CW pumped intracavity frequency doubling YAG laser and its thermal effect
YAO JIANQUAN, LI YU, XUI BIN, and LIU SHUZEEN
From the theory of SHG of Gaussian-like beams. We come to the conclusion th.it the power of the second-harmonic wave is approximately proportional to the square of the fundmentalwave power for frequency doubling of Gaussian-like beams with high conversion efficiences. Based on this, a new intracavity frequency doublingFrom the theory of SHG of Gaussian-like beams. We come to the conclusion th.it the power of the second-harmonic wave is approximately proportional to the square of the fundmentalwave power for frequency doubling of Gaussian-like beams with high conversion efficiences. Based on this, a new intracavity frequency doubling scheme of mixing-mode beam, i.e. quasi-CW pumping, is proposed. By using such scheme, the output power can be increased by a factor of 2, a fact that has been proven by theory and experiment. From thermal conduction equation, it has been found that the beam propagation parameter through a YAG rod under quasi-CW pumping is 22% lower· than that under CW pumping. If other factors are taken into account, the decrease will become 30%. By experimental njessureiiierite, we found that the thormal focal lengtli is increased and the divergence angle is decreased，as predicted by theory..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 326 (1986)
Single longitudinal mode characteristics of short-coupled-cavity (SCO semiconductor lasers
ZHOU BINGKUN, WANG JIANGLIN, and ZHANG HANYI
By introducing an additional loss parameter for the description of SCC and developing a model of modified multimode rate equations, the mode selection mechanism and characteristics of SCC semiconductor lasers have been investigated theoretically. It is found that an antireflection coating on the end facet of a laser diBy introducing an additional loss parameter for the description of SCC and developing a model of modified multimode rate equations, the mode selection mechanism and characteristics of SCC semiconductor lasers have been investigated theoretically. It is found that an antireflection coating on the end facet of a laser diode is necessary for high-quality single longitudinal mode operation. Based on the theoretical results, a new type of miniature SCC laser has heen constructed and demonstrated. Single mode outputs with 35~40 dB side mode suppression ratio have been obteined under CW and 150 MHz modulation conditiona..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 332 (1986)
Nonlinear Optics
Investigation of the simplified diagrammatic representation of high-order nonlinear optical susceptibility
WU QUN, GUO YILI, and ZHOU BINGKUN
The method to merge the diagrammatic representation of density matrix to the simplest form is deduced. In this way it is quite enough that the nth-susceptibility could be expressed only by n + 1 diagrams, and microchannel number in every term of suseeptibility could be obtained simultaneously.The method to merge the diagrammatic representation of density matrix to the simplest form is deduced. In this way it is quite enough that the nth-susceptibility could be expressed only by n + 1 diagrams, and microchannel number in every term of suseeptibility could be obtained simultaneously..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 339 (1986)
Optical Design and Fabrication
A unitary evalution merit for the oyerall performance of an imaging optical system
JIANG HUILIN
In this paper, the calculation formula (F=K of information volume is proposed based on demonstration of the possibility in indicating the overall performance of an imaging optical system by using a special information volume. The physical meaning of the formula is pointed out, and several calculation examples are givenIn this paper, the calculation formula (F=K of information volume is proposed based on demonstration of the possibility in indicating the overall performance of an imaging optical system by using a special information volume. The physical meaning of the formula is pointed out, and several calculation examples are given..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 365 (1986)
Spectroscopy
Theoretical investigation of the Weigert effect
ZHANG CHUNPING, WANG LIANG, LI HAOLIANG, HE KAIYU, and ZHANG GUANYIN
Optical and spectral properties of dichroic plates produced by Weigert effect were investigated and analyzed using the effective media theory of anisotropic in homogeneons media. Calculated results agree with experimental results.Optical and spectral properties of dichroic plates produced by Weigert effect were investigated and analyzed using the effective media theory of anisotropic in homogeneons media. Calculated results agree with experimental results..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 289 (1986)
Surface-enhanced Raman spectra of O-phenanthroline, 2, 2 -bipyridine and their complex ions adsorbed on silver colloid
ZHANG CHUNPING, ZHANG GUANGYIN, and JIANG PING
SEES from 0-phenanthroline, 2, 2 -bipyridine and their complex ions adsorbed on colloidal silver particles have been observed for the first time. The result provides an experimental evidence for the opinion that the 200 cm-1 band is related to the N-Ag bond vibration. Comparisons between Raman spectra of the molecules SEES from 0-phenanthroline, 2, 2 -bipyridine and their complex ions adsorbed on colloidal silver particles have been observed for the first time. The result provides an experimental evidence for the opinion that the 200 cm-1 band is related to the N-Ag bond vibration. Comparisons between Raman spectra of the molecules and those of their complexes are made, and some new phenomena are found. Combining with other experimental results (electron microscope photograph, transmission spectra), analyse and explanations are given for these phenomena..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 298 (1986)
Spectroscopic parameters of Er3+ crystals calculated by Judd-Ofelt theory
WANG QINGYUAN, ZHANG SIYUAN, WU SHIXUE, REN YING, and DONG XIANGMING
In this paper we report the results of spectroscopic intensity parameters of Er3+ in YAG:Er3+ single crystals. By using absorption spectra and Judd-Ofolt theory the experimental and theoretical oscillator strengths were caloulated. The rms deviation is only 1.9×10-7. Based on a least-square fit between experimentaIn this paper we report the results of spectroscopic intensity parameters of Er3+ in YAG:Er3+ single crystals. By using absorption spectra and Judd-Ofolt theory the experimental and theoretical oscillator strengths were caloulated. The rms deviation is only 1.9×10-7. Based on a least-square fit between experimental and theoretical oscillator strengths, the intensity parameters were determined. The results are Ωa = 0.19×10-20cm2, Ω4 = 1.68×10-20cm3; Ω6 = 0.62×10-20cm2. We then calculated probabilities of the Induced electric and magnetic dipole spoil taneoua radiative transitiong radiative lifetimes, high oscillator ,strength.Sj and branching ratios. The fluorescence spectra of Εr3+ in YAG:Ers+ coysxak were shown in the wave length range..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 6, Issue 4, 307 (1986)
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