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Acta Optica Sinica
Contents
1987
Volume: 7 Issue 10
18 Article(s)
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Research Article
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 1 (1987)
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Holography
Holographic tomography in determining refractive index of three-dimensional transparent object
ZHENG LENIAN, TSONGNENG W. LIN, and FRANOIS T. S. YU
.
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 903 (1987)
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A new model of associative memory in optical computing
YANG SHINING
A new memory model of associative memory called the reflexive associative memory in optical computing is presented in this paper. In this model the vectors are stored in a memory matrix in the form of vector pairs. Not only a full vector prestored in associative memory can be recalled from a partial information of the
A new memory model of associative memory called the reflexive associative memory in optical computing is presented in this paper. In this model the vectors are stored in a memory matrix in the form of vector pairs. Not only a full vector prestored in associative memory can be recalled from a partial information of the vector, but the other vector of the prestored vector pair can also be recalled. Optical implementation of the reflexive associative memory is also presented in this paper..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 911 (1987)
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Instrumentation, Measurement and Metrology
Optical heterodyne measurement of phase retardation of wave plate
LIN YAO, ZHOU ZHIYAO, and WANG KENWENG
This paper discusses an optical heterodyne technique for the measurement of phase retardation of a wave plate. The accuracy of the measurement of the optical pathe difference of the wave plate is roughly equal to the wavelength devided by 6000, better than other methods.
This paper discusses an optical heterodyne technique for the measurement of phase retardation of a wave plate. The accuracy of the measurement of the optical pathe difference of the wave plate is roughly equal to the wavelength devided by 6000, better than other methods..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 929 (1987)
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A new correlator capable of measuring 3:1 and 8:1 corr:lation curves
GONG ZHENGLIE, JI GUOJUN, WANG QINGTUE, and XIAO GUIXIANG
We have improved the correlator developed by J. -C. Diels. In the new type it is consisted of only four prsims; and henoe three pairs of glued optical surfaces become unnecessary. The angle tolerance of prisms is less than 5 second. Auto-ajustment method with prisms is presented in this papers We have designed a reason
We have improved the correlator developed by J. -C. Diels. In the new type it is consisted of only four prsims; and henoe three pairs of glued optical surfaces become unnecessary. The angle tolerance of prisms is less than 5 second. Auto-ajustment method with prisms is presented in this papers We have designed a reasonable system fyr transmission in which the intensity and phase correlation curves are obtained by onlp changing the voltage applied on the motor. It is worth pointing out that the phase correlation curve carries information of pulsewidth, which can be measured more accurately from the phase correlation ourve..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 935 (1987)
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Integrated Optics
Characteristics of optical coupling of a nonlinear waveguide cavity
HU GONGJAN, LIAO CHANGJUN, and LIU SONGHAO
The problem of coupling an external radiation field into a nonlinear waveguide cavity has been investigated theoretically and experimentally. The transmission factor of this cavity was found to vary with the incident light power. Optical pulse shaping and bistable operation were observed experimetlly in this cavity.
The problem of coupling an external radiation field into a nonlinear waveguide cavity has been investigated theoretically and experimentally. The transmission factor of this cavity was found to vary with the incident light power. Optical pulse shaping and bistable operation were observed experimetlly in this cavity..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 917 (1987)
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Calculation of radiation loss in single mode fibers by equivalent current method
WANG ZIHUA
Taking a non-ideal waveguide as an ideal waveguide in the presence of polarization currents giving rise to electric and magnetic fields, we can directly solve the problems of mode coupling and radiation loss of an optical waveguide. By using this method, we have calculated the radiation loss of single mode fibers cause
Taking a non-ideal waveguide as an ideal waveguide in the presence of polarization currents giving rise to electric and magnetic fields, we can directly solve the problems of mode coupling and radiation loss of an optical waveguide. By using this method, we have calculated the radiation loss of single mode fibers caused by periodical and random non-uniformities of the core index. It is an alternative method of coupled mode theory, but is mathematically impler and physically more intuitive than the coupled mode theory. At last, taking bending and microbending loss for single mode fibers as an example,wo see that this method also applied to problems which can be solved by generalized coupled mode theory..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 923 (1987)
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Lasers and Laser Optics
Features of polarized output of an anisotropic two-mode laser
LI SHIFANG, HU QIQUAN, and LIN FUCHEN
It is reported that the multistability behavior can be observed in a He-Ne laser, into which a anisotropic polarized loss is introduced. This phenomenon is explaned as a competition between the saturation-induced polarization perference and the anisotropism of the laser, as well as the effect of fluctuation on the mode
It is reported that the multistability behavior can be observed in a He-Ne laser, into which a anisotropic polarized loss is introduced. This phenomenon is explaned as a competition between the saturation-induced polarization perference and the anisotropism of the laser, as well as the effect of fluctuation on the modes with equal resonance frequency and different polarization directions..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 865 (1987)
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Properties of phase operators in single-mode squeezed state of light
YAO DEMIN
In this paper the properties of phase operators in single-mode squeezed state of light are discussed. Mean values and fluctuations of the usual phase operators are calculated and analyzed. Detailed discussions are made for the special squeezed vacuum state. Finally, the asymptotic properties of the results are derived
In this paper the properties of phase operators in single-mode squeezed state of light are discussed. Mean values and fluctuations of the usual phase operators are calculated and analyzed. Detailed discussions are made for the special squeezed vacuum state. Finally, the asymptotic properties of the results are derived in the classica| limit..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 869 (1987)
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Effect of additive with low ionization potential on output energy of a XeCI excimer laser
LI ZHAOLIN, CHE MINYU, GAO YUE, and HU XUEJIN
The additive with low ionization potential at extremely low concentration can. be used to improve the level of preionization of XeCl excimer laser. The additives of C6H5Cl and CCl4 have been used in our experiment, the enhancement of laser output energy up to 16% is observed. This is of specially important for the deve
The additive with low ionization potential at extremely low concentration can. be used to improve the level of preionization of XeCl excimer laser. The additives of C6H5Cl and CCl4 have been used in our experiment, the enhancement of laser output energy up to 16% is observed. This is of specially important for the developmentof large cross-section rare gas halide discharge..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 875 (1987)
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A new method for analysing the thermo-stable telescopic resonator
LU ZUKANG, FAN QIKANG, ZHAU YANG, WIN WENFA, ZHANG LIMING, and BAo CHENFANG
A new simplified method-compound lens method- for analysing the thermostable telescopic resonator is reported. Using this method, we suoessfully obtained the stable output with a large volume of TEM00 mode for a high repetition rate Nd: YAG laser. The output energy of the resonator at 1.06μm is 250 mJ per. pulse over t
A new simplified method-compound lens method- for analysing the thermostable telescopic resonator is reported. Using this method, we suoessfully obtained the stable output with a large volume of TEM00 mode for a high repetition rate Nd: YAG laser. The output energy of the resonator at 1.06μm is 250 mJ per. pulse over the range of 1-10pps, and the output energy fluctuation is less than ±2%..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 879 (1987)
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Full quantum theory of optically pumped two-photon laser
SUN SONGGEN
In this paper, the model which consists of homogeneous broadened three atomic level is proposed, when both the pump classical field and laser field exist we discuss the gain, frequency pulling and threshold condition of the weak pumping. We also discuss the effect of the coherent pumping on the laser line width. The re
In this paper, the model which consists of homogeneous broadened three atomic level is proposed, when both the pump classical field and laser field exist we discuss the gain, frequency pulling and threshold condition of the weak pumping. We also discuss the effect of the coherent pumping on the laser line width. The results are compared with what derived for non-coherent pumping and no-pumping..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 886 (1987)
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Laser-induced multiphoton fluorescence of hemoglobin
ZHANG JINGRU, XU YINGWU, DENG YUMEI, WU CUNKAI, JIANG SHOUPING, and LIAN SHAOHUI
Hemoglobin and other samples were irradiated by the 1064 nm light of a nanosecond pulse Nd:YAG laser. At room temperature, we first observed two red fluorescence bands which result from absorbing two 1064 nm photons in hemoglobin (Hb), and we measured the fluorescence emission spectra at red region for Hb and hemotopor
Hemoglobin and other samples were irradiated by the 1064 nm light of a nanosecond pulse Nd:YAG laser. At room temperature, we first observed two red fluorescence bands which result from absorbing two 1064 nm photons in hemoglobin (Hb), and we measured the fluorescence emission spectra at red region for Hb and hemotoporphyrin derivative (HpD). Both Hb and HpD have two fluorescence emission maxima. A red shift in wavelength and a mirror image in the intensity of fluorscence emissions by two-photon excitation relative to that by one-photon (532-nm) excitation were observed. The experimental analysis showed that the fluorescence of Hb originates from the porphyrin ring of the heme group, just as that of HpD from the porphyrin ring. Besides, we also observed the fluorescence emission at UY 392-nm for Hb, which may come from the tryptophans in Hb..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 897 (1987)
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Materials
Study of defects in YAG: Nd
3+
crystals by means of cathodoluminescence micrography
HUANG DEQUN, WANG HAOBING, and DENG PEIZHEN
Using the cathodoluminescence (CL) mode of operation of the scanning electron microscope (SEM), OL images of various defects in YAG:Nd3+ crystals have been obtained. Prther investigation of the formation mechanism of the defects and effects of performances in YAG:Nd3+ crystals has been made according to the OL images.
Using the cathodoluminescence (CL) mode of operation of the scanning electron microscope (SEM), OL images of various defects in YAG:Nd3+ crystals have been obtained. Prther investigation of the formation mechanism of the defects and effects of performances in YAG:Nd3+ crystals has been made according to the OL images..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 939 (1987)
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Application of finite element solution of temperature distribution within glass during annealing for calculation of nonumiformity of refractive inded due to the nonhomogeneous structure
LI FANG
In order to predict many important physical phenomena in a large-size glass during annealing the application of the finite element solution of heat transfer problems to the determination of the tempe ature distibution within axisymmetric glass being annaeled (the temperature change is slow) has been suggested for the f
In order to predict many important physical phenomena in a large-size glass during annealing the application of the finite element solution of heat transfer problems to the determination of the tempe ature distibution within axisymmetric glass being annaeled (the temperature change is slow) has been suggested for the first time in this paper. According to above result, this paper also suggests the calculation method of the nonuniformity of refractive index due to the nonhomogeneous structure of annealed glass, thus overcoming previous difficulty in the oaloulation..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 946 (1987)
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Rapid Communications
Observation of leaky modes of a multi-layer quasi-waveguide
DING TIENAN, BEN BIGKFU, and ZHAO SHENG
A new method for measuring multi-layer optical film parameters is proposed, which is based on observation of quasi-waveguide leaky modes. As an example, two liquid layers separated by a glass slide and sandwiched between a prism and another slide, were studied. Leaky mode mlines of the two layers were measured, and use
A new method for measuring multi-layer optical film parameters is proposed, which is based on observation of quasi-waveguide leaky modes. As an example, two liquid layers separated by a glass slide and sandwiched between a prism and another slide, were studied. Leaky mode mlines of the two layers were measured, and used for calculation of the parameters of the two layers. The errors of refractive index of the measured film and the thickness are about ±0.001 and ±0.1μm, respectively..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 953 (1987)
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A high repetition rate XeCl excimer laser
NAN YINGZI, WU HAIliN, WANG CHANSHAN, GENG XIULAN, and Li YINKAI
Configuration and performances of a high repetition rate XeCl exoimer laser are reported. A ceramio-metal grounded grid thyratron used as pulse switch, a transverse flow system, and a structure of fast transverse discharge of UV preionization are adopted in the laser system. The maximun output pulse energy is 200 mJ, m
Configuration and performances of a high repetition rate XeCl exoimer laser are reported. A ceramio-metal grounded grid thyratron used as pulse switch, a transverse flow system, and a structure of fast transverse discharge of UV preionization are adopted in the laser system. The maximun output pulse energy is 200 mJ, maximum average power is 18 W at a repetition rate of 107 Hz..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 957 (1987)
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Spectroscopy
The f-d radiative transition probability of Pr
3+
in PrP
5
O
14
crystals
ZHANG SIYuAN
In this paper, the calculation method of 4fN-15d-fN radiative transition probability is discussed, the parentage selectrive rule is proposed, and the f-d radiative transition probabilities of Pr3+ in PrP5O14 crystals are calculated. The results show that the f-d transition probability of rare earth is much larger than
In this paper, the calculation method of 4fN-15d-fN radiative transition probability is discussed, the parentage selectrive rule is proposed, and the f-d radiative transition probabilities of Pr3+ in PrP5O14 crystals are calculated. The results show that the f-d transition probability of rare earth is much larger than f-f transition..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 7, Issue 10, 892 (1987)
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