Contents
1988
Volume: 8 Issue 3
20 Article(s)
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Research Article
Fourier Optics and Signal Processing
Off-axis holography for the analysis of dynamic particle field
ZHU ZHULING, HUANG GONGYU, and WANG PENG
The experimental method and principle for measuring the dynamic oil spray field of a diesel engine using off-axis holography are discribed, and the problems with regard to properties of semitransparent oil droplets, judgment for focusing and the limitation of particle density are discussed.The experimental method and principle for measuring the dynamic oil spray field of a diesel engine using off-axis holography are discribed, and the problems with regard to properties of semitransparent oil droplets, judgment for focusing and the limitation of particle density are discussed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 235 (1988)
The amount of information of high-speed photography system
TAO CHUNKAN
Based on the theory of optical information, the expression of the amount of information for high-speed photography system is obtained. It shows that the amount of information depends on the object, parameters of the system and its working condition.Based on the theory of optical information, the expression of the amount of information for high-speed photography system is obtained. It shows that the amount of information depends on the object, parameters of the system and its working condition..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 242 (1988)
Lau effect with square wave modulated phase grating
TU JINGHONG, GUO JIARONG, and ZHANG YOUWEN
Based on the partial coherence theory, the Lau effect with square wave modulated phase grating is studied. The theoretically predicted high contrast Lau effect fringes are observed in the experiment.Based on the partial coherence theory, the Lau effect with square wave modulated phase grating is studied. The theoretically predicted high contrast Lau effect fringes are observed in the experiment..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 249 (1988)
Lasers and Laser Optics
Ultrafine structure of XeCl excimer laser spectrum
LOU QIHONG
The ultrafine structure of XeCl excimer laser spectrum was explained by the calculation of the vibration-rotational spectrum. The calculated results are in good agreement with that of the experiments.The ultrafine structure of XeCl excimer laser spectrum was explained by the calculation of the vibration-rotational spectrum. The calculated results are in good agreement with that of the experiments..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 253 (1988)
Investigation of the gain of copper vapor laser Yin Xianhua,Liang Baogen,Tao Yongxiang
YIN XIANHUA, LIANG BAOGEN, TAO YONGXIANG, CUI JIANLI, and CHEN LIFEI
The gain and saturation energy density of the 5106 line of Copper Vapor Laser measured with an oscillator and a single-pass amplifier are 0.2cm-1 and 22.3μJ·cm-2 respectively. The experimental results are also discussed.The gain and saturation energy density of the 5106 line of Copper Vapor Laser measured with an oscillator and a single-pass amplifier are 0.2cm-1 and 22.3μJ·cm-2 respectively. The experimental results are also discussed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 257 (1988)
Nonlinear Optics
Enhancement of photon antihunching——interference of two light beams after two-photon absorption
HE LINSHENG
A scheme characterized by the destructive interference of two light beams after two-photon absorption is proposed to enhance the photon antibnnching effect by 1012 times. In this way, the photon antibnnching phenomena in a two-photon absorption process can be detected experimentaly.A scheme characterized by the destructive interference of two light beams after two-photon absorption is proposed to enhance the photon antibnnching effect by 1012 times. In this way, the photon antibnnching phenomena in a two-photon absorption process can be detected experimentaly..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 193 (1988)
Solitary waves of steady state SRS in optical fiber
XU ZHONGDE, YANG FUZI, and FANG JUNXIN
The equations of SRS in optical fiber are given. The equations are discussed and a conclusion that the solitary waves can exist in the process of steady state SRS is obtained. This theory gives a new way to produce ps pulses.The equations of SRS in optical fiber are given. The equations are discussed and a conclusion that the solitary waves can exist in the process of steady state SRS is obtained. This theory gives a new way to produce ps pulses..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 200 (1988)
Forced oscillation model of optical bistability
OU FA, WU TINGWAN, and ZHANG XIAODONG
This paper presents a new model of optical bistability (OB). In view of the ideas of the mean field approximation, the slow envelope approximation and the adiabatic approximation, the OB system can be regarded as a "box". Comparing with the theory of nonlinear oscillation, we find that the courses in differenThis paper presents a new model of optical bistability (OB). In view of the ideas of the mean field approximation, the slow envelope approximation and the adiabatic approximation, the OB system can be regarded as a "box". Comparing with the theory of nonlinear oscillation, we find that the courses in different OBS s-includingdifferent substances and different cavities (E-P. C. or E. C. )-can be describedconsistently, in both steady state and temporal respect, with an appropriate nonlinear forced oscillation theory, we develop the equation iniio a coupling and autonomous dynamic equation set of phase and amplitude. The general solutions of the equation set for OB eteady state and transienii beliavior are obtained conveniently from this form. Several concrete results in literaiiure are compared as the examples for the veriiication of the widely applicability of this model..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 205 (1988)
Optical Design and Fabrication
The spectrum diffraction interferometer with computer simulation
HUAG HONGXIN, LIU LIREN, and WANG ZHIJIANG
The computer simulation for spectrum diffraction interferometer (S-D-I) is proposed. The S-D-I with spectrum of geometric pattern is discussed, and the intensity is directly relative to the line-integral along the track of the pattern. Acording to the experiment, we proposed a parabola model of an alcohol-lamp flame, tThe computer simulation for spectrum diffraction interferometer (S-D-I) is proposed. The S-D-I with spectrum of geometric pattern is discussed, and the intensity is directly relative to the line-integral along the track of the pattern. Acording to the experiment, we proposed a parabola model of an alcohol-lamp flame, thus the distribution of interference fringe of the flame can be calculated with a computer, and the result is identical with the experiment. We also discuss the nature of S-D-I with some special spectra, and a few valuable conclusions are obtained..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 222 (1988)
Method of improving accuracy of rotating analyzer ellipsometer
ZHANG KEQI, and TAN YIXUN
Two effects which exist normally in rotating analyzer ellipsometer and decrease the measurement accuracy are analyzed in this paper. The improved measuring method and corrective formula for the measured results are given. By means-of these procedures, the improvement of its accuracy is obvious and has been confirmed byTwo effects which exist normally in rotating analyzer ellipsometer and decrease the measurement accuracy are analyzed in this paper. The improved measuring method and corrective formula for the measured results are given. By means-of these procedures, the improvement of its accuracy is obvious and has been confirmed by the experiment..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 228 (1988)
Rapid Communications
Optical wave propagation through inhomogeneous random medium——The solution of the m-n th moment equation of multiple scattering
WANG ZHENGSONG
The analytic solution of the multiple scattering m - nth moment equation with different wave numbers and different posiiions is given in the small angle scattering approximation for optical wave propagated through such a random medium, that the material parameter fluctuates inhomogeneoursly in the dirction of propagatiThe analytic solution of the multiple scattering m - nth moment equation with different wave numbers and different posiiions is given in the small angle scattering approximation for optical wave propagated through such a random medium, that the material parameter fluctuates inhomogeneoursly in the dirction of propagation and homogeneously in the direction transverse to the propagation path. The applications of the solution to the problems related with the optical beam propagation are discussed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 266 (1988)
Measurement of polarization characteristics of Bow-Tie fiber
CHEN YIQIANG, and HUANG ZHAOMING
The paper describes a simple experimental process, including the optical system and calculation method for measuring the beat length and extinction ratio of bow-tie fiber.The paper describes a simple experimental process, including the optical system and calculation method for measuring the beat length and extinction ratio of bow-tie fiber..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 271 (1988)
The magnetooptic effect of single-mode fibers
CHEN XIKUN, and ZONG WKIYONG
In investigating the polarization property and magnetooptic effect of single-mode fiber, we need to consider not only its Faraday effect but also its birefringence. In this paper, the theory of the magnetooptic effect of the single-mode fiber is described with the Jones matrix. The Jones matrix expressing the birefringIn investigating the polarization property and magnetooptic effect of single-mode fiber, we need to consider not only its Faraday effect but also its birefringence. In this paper, the theory of the magnetooptic effect of the single-mode fiber is described with the Jones matrix. The Jones matrix expressing the birefring ence and magnetooptic effect of the single-mode fiber is derived. And the relation between the output light intensity and Faraday rotation angle of current sensor system is presented using Mueller matrix..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 276 (1988)
Investigation on the rotating a perture methods of white-light speckle photography
CHEN BINGQUAN, and CHENG CHUANFU
Rotating aperture methods of white-light speckle photography used for measuring the dynamic problems is proposed in this paper. In addition to the advantages of rotating aperture mothods of laser speckle photography, in particular it can be used for dynamic measurement in the field.Rotating aperture methods of white-light speckle photography used for measuring the dynamic problems is proposed in this paper. In addition to the advantages of rotating aperture mothods of laser speckle photography, in particular it can be used for dynamic measurement in the field..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 281 (1988)
Digital phase contrast imaging
ZHOU ZHIQING
The digital phase contrast method is described, and it is used to process the data acquired from Scanning Laser Acoustical Microscope. Images obtained are quite clear.The digital phase contrast method is described, and it is used to process the data acquired from Scanning Laser Acoustical Microscope. Images obtained are quite clear..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 284 (1988)
Scanning tunneling microscopic images of the surface of graphite
YAO JUN KN, SHANG GUANGYI, JIAO YUEKAN, YI YUAN, BAI CHUNLI, HE JIE, ZHONG JICHANG, and RONG DEYIAN
In this paper, a scanning tunneling microscope constructed in this laboratory using a single tube scanner was described. Line scan (amplitude modulation), top view (brightness modulation) and shaded topographical images of the surface of highly oricented, pyrolytic graphitc (HOPG) were shown.In this paper, a scanning tunneling microscope constructed in this laboratory using a single tube scanner was described. Line scan (amplitude modulation), top view (brightness modulation) and shaded topographical images of the surface of highly oricented, pyrolytic graphitc (HOPG) were shown..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 287 (1988)
Spectroscopy
Stark structure of atomic levels of Na
QIU JIZHEN, ZHANG SEN, LANG YI, XU YUNFEI, and WANG GANG
We report the experimental results of the Stark effect in the vicinity of n = 12, 13, 14 of Na in the field from 0-8kV/cm. It is observed that the low-angular-momentum terms merge into the linear manifolds and the |m| degeneracy is removed when the field increases. The experimental results are discussed in this paper.We report the experimental results of the Stark effect in the vicinity of n = 12, 13, 14 of Na in the field from 0-8kV/cm. It is observed that the low-angular-momentum terms merge into the linear manifolds and the |m| degeneracy is removed when the field increases. The experimental results are discussed in this paper..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 212 (1988)
Calculation of atomic two-photon excitation cross section
LI YUANBO
On the basis of the Irreducible tensor method, we use second quantization to calculate the two-photon excitation cross section. In the calculation, we suppose that two-photon process obeys parentage scheme approximation. On this condition, an approximation formula is developed to calculate two-photon excitation cross sOn the basis of the Irreducible tensor method, we use second quantization to calculate the two-photon excitation cross section. In the calculation, we suppose that two-photon process obeys parentage scheme approximation. On this condition, an approximation formula is developed to calculate two-photon excitation cross section of any atom. The theoretical formula can simplify the calculation process.As an illustrative example, we have calculated some two-photon excitation cross sections of Hg atom. The theoretioal results are in good agreement with experimental data on the order of magnitnde..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 217 (1988)
Thin Films
Vapor-phase mixed deposition of optical coatings
DUAN ZHIPING, and ZHOU JIULIN
Two thin-film materials are evaporated simultaneously from reepective sources in vacuum where vapor-phase mixed thin films will be formed. Experimental methods are described for the vapor-phase mixed deposition, and three programs for controlling deposition are presented. The experimental results of two broad-band antiTwo thin-film materials are evaporated simultaneously from reepective sources in vacuum where vapor-phase mixed thin films will be formed. Experimental methods are described for the vapor-phase mixed deposition, and three programs for controlling deposition are presented. The experimental results of two broad-band antireflection coatings are given as practical examples. Experiments show that vapor-phase mixed deposition is a promising technique for application..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 3, 261 (1988)
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