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Acta Optica Sinica
Contents
1985
Volume: 5 Issue 1
19 Article(s)
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Research Article
[in Chinese]
.
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 1 (1985)
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Holography
Image differentiation with spatial incoherent light
[in Chinese], [in Chinese], and [in Chinese]
In order to suppress the coherent artigact noise, a method of image differentiation by means of monochromatic incoherent line source is described. Differentiation filter is realized by making F. T. holographic filter from diffracting grating type differentiation mask. Experimental results show that noise reduction resu
In order to suppress the coherent artigact noise, a method of image differentiation by means of monochromatic incoherent line source is described. Differentiation filter is realized by making F. T. holographic filter from diffracting grating type differentiation mask. Experimental results show that noise reduction resulting from the line source is considerable..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 38 (1985)
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Microfabrication of holographic blazed grating by reactive ion beam etching
FU XINDING, ZHENG YANFANG, CHENG LIZHI, REN CONGXIN, CAI XUEQIANG, QU ZHIMING, XU YINMING, and LI MEIYUE
The SiO2 holographic blazed grating with good quality and high diffraction efficiency have been developed by reactive ion beam etching and holographic grating mask made by lensless Fourier transform holography recording. We investigated the techniques of the photoresist coating, holographic exposure and development so
The SiO2 holographic blazed grating with good quality and high diffraction efficiency have been developed by reactive ion beam etching and holographic grating mask made by lensless Fourier transform holography recording. We investigated the techniques of the photoresist coating, holographic exposure and development so that the mask pattern of the AZ1350 photoresist holographic grating should be made suitable for reactive ion beam etching. And then, the SiO2 holographic blazed gratings with space frequency of 1000 lines/mm are microfabricatod by 0F4 ion beam etching. The etching rate of SiO2 and AZ1350 photoresist has been determined. The blazed angle of gratings can be controlled by varying the incident angle of the ion team. The advisable etching technology parameters have been chosen and the experimental results of the Si02 hoJographio blazed grating with 67% diffraction efficiency have been achieved..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 43 (1985)
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Instrumentation, Measurement and Metrology
A new approach to investigate the parameters of surface layer on glasses
LIANG PETHUI, MA YENYEN, YANG BENQI, and WANG ZHIJIANG
The relation between the incident angle of a p-polarization beam and the reflectance ratio on both sides of glass or other transparent material, is strongly sensitive to the surface layer parameters such as refrative index, thickness, and absorption, especially when tho refractive indexes of the surface and the flat ho
The relation between the incident angle of a p-polarization beam and the reflectance ratio on both sides of glass or other transparent material, is strongly sensitive to the surface layer parameters such as refrative index, thickness, and absorption, especially when tho refractive indexes of the surface and the flat host are nearly the same. The paper gives the primary experimental results and the numerical simulation based on the theory of thin film optics. By means of data fitting, we are able to learn the physical state of the surface layer from the experimental curves of reflectance ratio versus incident angle. The meuhode has the advantage of simplicity in equipment and easiness1 in understanding..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 55 (1985)
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Theory of integrating sphere by converging series approaches
LI FANG, and YB GUANRONG
From the principle of multiple reflections of light in an integrating sphere, the non-linear errors are obtained. These errors exist in the substitution or comparison method when making photometric or colorimetric measurements by converging series approaches. At the same time, the error correction formulas are found, a
From the principle of multiple reflections of light in an integrating sphere, the non-linear errors are obtained. These errors exist in the substitution or comparison method when making photometric or colorimetric measurements by converging series approaches. At the same time, the error correction formulas are found, and the designing criteria of the parameters of the integrating sphere are proposed..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 61 (1985)
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Lasers and Laser Optics
Formation and quenching kinetics of discharge pumped Xe
2
Cl
LOU QIHONG
By comparing the fluorescence intensity of XeCl(B-X), (C-A) and Xe2Cl as a function of the total gas pressures, the formation and quenching kinectics of discharge pumped Xe2Cl* have been quantitatively studied and the HCl deexcitation rate constant for Xe2Cl have been determined to be KHCl0=9.2×10-10cm3/sec.
By comparing the fluorescence intensity of XeCl(B-X), (C-A) and Xe2Cl as a function of the total gas pressures, the formation and quenching kinectics of discharge pumped Xe2Cl* have been quantitatively studied and the HCl deexcitation rate constant for Xe2Cl have been determined to be KHCl0=9.2×10-10cm3/sec..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 11 (1985)
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High power laser beam transmitted through a fiber optic cable for treatment of human hepatic cancer
YE BIQING, and MA ZHONGLIN
The coupling-transmission characteristics of high power laser beam through a low-loss optical fiber made in China are investigated. The fiber optic cable composed of lens-fiber-lens is developed. 200 watt output power and 90% coupling-transmission efficiency are obtained by using the quartz fiber cable with 2m length.
The coupling-transmission characteristics of high power laser beam through a low-loss optical fiber made in China are investigated. The fiber optic cable composed of lens-fiber-lens is developed. 200 watt output power and 90% coupling-transmission efficiency are obtained by using the quartz fiber cable with 2m length. Up to now the fiber optic cable is successfully applied to the treatment of six cases of hepatic cancer, one case of hepatic blood vessel tumour and one case of oral cavity cancer..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 15 (1985)
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A method of directly measuring B-integral in a high power laser system
Yu WENYAN, ZHENG YUXIA, XIE ZHIMIN, and TANG XIANZHONG
This paper suggest a method of direct measurement of B-integral by using spectrum-broadening method in a high power Nd-glass laser system. Good results are obtained. In this paper, A method for directly measuring the B-integral in a high power Nd-glass laser system has been proposed by using the spectrum-broadening tec
This paper suggest a method of direct measurement of B-integral by using spectrum-broadening method in a high power Nd-glass laser system. Good results are obtained. In this paper, A method for directly measuring the B-integral in a high power Nd-glass laser system has been proposed by using the spectrum-broadening techniques. Favorable results have been obtained..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 19 (1985)
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Ablation parameter measurement of plain foil target in laser produced plasmas
LIN ZUNQI, ZHANG YANZHEN, LIN KANGCHUN, and WU TONGYANG
Experimental results are presented about specific mass ablation rate, ablation pressure, hydrodynamic efficiency and other parameters by using ion measurements in laser produced plasmas obtained at tilted plain mylar targest irradiated by Nd: glass high power laser with both P polarization and 8 polarization. Laser irr
Experimental results are presented about specific mass ablation rate, ablation pressure, hydrodynamic efficiency and other parameters by using ion measurements in laser produced plasmas obtained at tilted plain mylar targest irradiated by Nd: glass high power laser with both P polarization and 8 polarization. Laser irradiance on target surface is ranging from 2×1012 to 1014 W·cm-2. Experimental scaling laaw is compared with theory. The difference of ablation parameters and temporal ion signals collected from the back of the thin foils produced by different polarization of the incident light is preliminarily discussed..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 24 (1985)
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Calorimeters for measurement of ions and X-rays in laser-plasma experiments
LTN KANGCHUN, LIN ZUNQI, ZHONG HONGLIN, and LIU JIAN
The principle, structure and calibration of the ion and X-ray calorimeters are described. The results of their applications to the experiments on laser-plasma are analyzed and discussed.
The principle, structure and calibration of the ion and X-ray calorimeters are described. The results of their applications to the experiments on laser-plasma are analyzed and discussed..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 32 (1985)
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OPTOELECTRONICS
GaAs optoelectronic switch with continuous variable electric pulse width
ZHU XINMING, and Wu CINAN
An optoelectronic switch, which consists of two GaAs cuboids and a resistance, operates in a high output resistance mode, is directly connected to a pair of Pockls cell electrodes. kV electric pulses with continuous variable width in the ns region have been obtained. The output efficiency is high as 84%.
An optoelectronic switch, which consists of two GaAs cuboids and a resistance, operates in a high output resistance mode, is directly connected to a pair of Pockls cell electrodes. kV electric pulses with continuous variable width in the ns region have been obtained. The output efficiency is high as 84%..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 75 (1985)
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Physical Optics
Transmission of submillimeter waves in a metal light pipe
FU ENSHENG
The transmissivity experssion T=exp[- (L/d)] for submillimeter waves transmitted in a metal light pipe is given. Comparason of the theoritical calculation with the measured data by the autyor and data published elsewhere has been made. It is shown that the auther s results are more close to the experimental values than
The transmissivity experssion T=exp[- (L/d)] for submillimeter waves transmitted in a metal light pipe is given. Comparason of the theoritical calculation with the measured data by the autyor and data published elsewhere has been made. It is shown that the auther s results are more close to the experimental values than the theoritical calculated values before..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 69 (1985)
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Rapid Communications
SHG study for anomalous properties of LiNbO
3
crystal near 75 ℃
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The intensity of SHG vs temperature scanning curve of LiNbO3 crystal have been measured with an acostic-optical Q-switch Nd3+:YAG laser. The change of coherence length of Maker finger was used to research the anomalous properties of LiNbO3 crystal. Experiment result showed the coherencelength broadening anomalously nea
The intensity of SHG vs temperature scanning curve of LiNbO3 crystal have been measured with an acostic-optical Q-switch Nd3+:YAG laser. The change of coherence length of Maker finger was used to research the anomalous properties of LiNbO3 crystal. Experiment result showed the coherencelength broadening anomalously near 75℃. This anomalous phenomena may be attributed to the anomalous variety of refraction index owing to some ions movement in crystal near 75 ℃..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 78 (1985)
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CF
2
(
3
B
1
) produced by reaction O(
3
P)+C
2
F
4
ZHOU SHIKANG, ZHAN MINGSHENG, QIU YUANWU, LIU SONGHAO, SHI JILIANG, LI FANGLIN, and YAO JIEXING
This paper reports the experimental results of the emission spectra and energy transfer of CF2(3B1) produced by reaction O(3P)+C2F4. Some new vibrational bands and Franck-Condon factors are obtained. The relation between the vibrational state distribution of CF2(3B1) and the flux of C2F4 are also given.
This paper reports the experimental results of the emission spectra and energy transfer of CF2(3B1) produced by reaction O(3P)+C2F4. Some new vibrational bands and Franck-Condon factors are obtained. The relation between the vibrational state distribution of CF2(3B1) and the flux of C2F4 are also given..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 83 (1985)
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Characteristics of WO
3
film with large area deposited by laser photolysis
SHEN GUANGPING, ZHOU ZHENZHUO, and QIN MINGXIN
It is reported in this article that WO3 film was deposited by XeCl laser photolysis for the first time. The area of the film is 1cm2 and the deposition, rate is 41 A/pulse, the Main characteristics of the film, including its composition and resistivity etc, have been measured.
It is reported in this article that WO3 film was deposited by XeCl laser photolysis for the first time. The area of the film is 1cm2 and the deposition, rate is 41 A/pulse, the Main characteristics of the film, including its composition and resistivity etc, have been measured..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 89 (1985)
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Theoretic calculation of the oscillator strength of the first positive bandsy stem of the nitrogen molecule
TIAN XINGSHI
The set of criteria for selecting configuration function, presented in the previous paper[2], are extended from double-electron excitation to three-electron exoetation. The effect of other multiplicate states on the excited B 3Πg and A 3Σu++ states are excluded by using the projection operator. By means of CI method th
The set of criteria for selecting configuration function, presented in the previous paper[2], are extended from double-electron excitation to three-electron exoetation. The effect of other multiplicate states on the excited B 3Πg and A 3Σu++ states are excluded by using the projection operator. By means of CI method the oscillator strongth of the first positiue band system of N2 is calculated. The calculated value is 0.00198, being in good agreement with experimental values..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 92 (1985)
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Transition state calculations of oscillator strengths of helium-like ions in spin polarization Xα exchange approximation
ZHU QIREN, SONG QINGFONG, and PAN SHOUFU
The paper aims to show obviously the advantage of spin polarization Xa exchange approximation for transition state calculation through systematic calculation of oscillator strengths of single-state and triple-state transitions in helium-like ions. This is the continuance of previous work by the authors.
The paper aims to show obviously the advantage of spin polarization Xa exchange approximation for transition state calculation through systematic calculation of oscillator strengths of single-state and triple-state transitions in helium-like ions. This is the continuance of previous work by the authors..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 95 (1985)
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Reviews
Present state of optics in China
WANG DAHENG, and Wo XINNENG
In this paper, the status of the art of optics and applied optics in China are reviewed including lasers, infrared and opto-electronical techniques, optical metrology, high-speed photography, holography and information processing, nonlinear optics, optical fibre communication and optical techniques. The issues for furt
In this paper, the status of the art of optics and applied optics in China are reviewed including lasers, infrared and opto-electronical techniques, optical metrology, high-speed photography, holography and information processing, nonlinear optics, optical fibre communication and optical techniques. The issues for further development of optics and applied optics in China are proposed..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 1 (1985)
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Thin Films
Electric field assiated deposition of ZnS/Na
3
AlF
6
interference olite filters
GU PEIFU
If an electric field is introduced during deposition, it is possible to improve optical stability of narrow band filters. We applied Acoor DC electric filed have been used to prepare ZnS/cryolite. As a result, the mesured peak transmission Wavelength keeps basically constant even in 100%RH. Some reasons for improvement
If an electric field is introduced during deposition, it is possible to improve optical stability of narrow band filters. We applied Acoor DC electric filed have been used to prepare ZnS/cryolite. As a result, the mesured peak transmission Wavelength keeps basically constant even in 100%RH. Some reasons for improvement of the filter stability are also analysed..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 5, Issue 1, 50 (1985)
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