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Acta Optica Sinica
Contents
1989
Volume: 9 Issue 9
17 Article(s)
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 1 (1989)
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Fiber Optics and Optical Communications
Semiclassical analysis of optical fiber amplifiers
ZHANG MINGDE, YIN GUOLI, and YANG XIANGLIN
A semiolassioal theory oil interaction process in optical fiber amplifier is presented. With the theory, relationships between the gain coefficient and the amplifier parameters, such as fiber V parameter, pump power, signal power, the unmbers of doped atoms in, unit volume and gain saturation parameter, etc. are studie
A semiolassioal theory oil interaction process in optical fiber amplifier is presented. With the theory, relationships between the gain coefficient and the amplifier parameters, such as fiber V parameter, pump power, signal power, the unmbers of doped atoms in, unit volume and gain saturation parameter, etc. are studied in detail..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 797 (1989)
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Theoretical analysis of multimode fiber Fabry-Perct interferometer
ZHAN YUANLING, and Lu MINGZHE
In this paper, the interference of multimode fiber Fabry-Perot interferometer-(FFPI) is analyzed, and the influences of the bend loss, the coherence of light source as well as the coupling efficiency on the legibility of the interference pattern are discussed. It is shown that the theoretical analysis are in agreement
In this paper, the interference of multimode fiber Fabry-Perot interferometer-(FFPI) is analyzed, and the influences of the bend loss, the coherence of light source as well as the coupling efficiency on the legibility of the interference pattern are discussed. It is shown that the theoretical analysis are in agreement with the experimental results..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 803 (1989)
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Analysis for counterpoint tolerances of tunable polishing optical-fiber couplers
YAN FANG, CHEN ZHENYI, and WU SHINIAN
In this paper the formulae of coupling power in tunable polishing optical-fiber couplers have been derived, with ibs top-quartz block moving along the longitudinal or lateral direction and revolving round the vertical axis against the bottom-quartz block. Thereby, counterpointtolerances and a device-design basis for va
In this paper the formulae of coupling power in tunable polishing optical-fiber couplers have been derived, with ibs top-quartz block moving along the longitudinal or lateral direction and revolving round the vertical axis against the bottom-quartz block. Thereby, counterpointtolerances and a device-design basis for various tunable polishing optical-fiber couplers are given as well..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 810 (1989)
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Fourier Optics and Signal Processing
Symbolic substitution using shadow-casting
XUE WEI, CHENNG LIXUE, LI CHONFEI, and HONG JING
A new optical system for symbolic substitution is proposed. The system is composed of the lensless shadow-casting system comibined with optical logical array and optical image storage elements. The light-emitting diodes (IED) are used as both a light source and a control element in the operation, so that symbolic subst
A new optical system for symbolic substitution is proposed. The system is composed of the lensless shadow-casting system comibined with optical logical array and optical image storage elements. The light-emitting diodes (IED) are used as both a light source and a control element in the operation, so that symbolic substitution is implemented by all-photoelectric manipulation. Experimental principle, procedure and result are given..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 843 (1989)
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Amount of information of high-speed photographical systems
LI DEXIONG
Calculating formulas of the amount of information for high-speed streak cameras, high-speed framing cameras, and high-speed raster cameras are discussed respectively, The influence of optical shutter effect on the spatial resolution of some kinds of framing cameras is also discussed.
Calculating formulas of the amount of information for high-speed streak cameras, high-speed framing cameras, and high-speed raster cameras are discussed respectively, The influence of optical shutter effect on the spatial resolution of some kinds of framing cameras is also discussed..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 848 (1989)
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Lasers and Laser Optics
Linewidth reduction of semiconductor lasers and study of linewidth property
CHAI YANJIE, ZHANG HANTI, ZHOU BINGKUN, and WU QUN
In this paper, principles of linewidth reduction of external cavity semiconductor lasers are analyzed. Linewidth measurement is performed by the Delayed Self Heterodyne Method. It is obtained experimentally that laser linewidth is reversely proportional to laser output power and external cavity feedback level.
In this paper, principles of linewidth reduction of external cavity semiconductor lasers are analyzed. Linewidth measurement is performed by the Delayed Self Heterodyne Method. It is obtained experimentally that laser linewidth is reversely proportional to laser output power and external cavity feedback level..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 775 (1989)
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Experimental study of a Raman free electron laser with 1.19m interaction length
LU ZAITONG, ZHANG LIFEN, CHEN JIZHONG, SHI BUIGEN, and WANG ZHIJIANG
The free-electron laser interaction length has been increased to 1190 mm from 308 mm by using a recently developed bifilar-herix wiggler with length 1.3m and a appropriate axial magnetic coil. The laser radiation output peak power of 12MW and electronic efficiency of have been obtained in our experiment.
The free-electron laser interaction length has been increased to 1190 mm from 308 mm by using a recently developed bifilar-herix wiggler with length 1.3m and a appropriate axial magnetic coil. The laser radiation output peak power of 12MW and electronic efficiency of have been obtained in our experiment..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 780 (1989)
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Study of chirping properties of semiconductor laser with optical fiber ring feedback
ZHANG JIANPING, and YE PEIDA
In this paper a complete small signal analysis for semiconductor laser frequency chirping in the presence of optical fiber ring feedback is presented. It shows that the chirp-to-power ratio (CPR) strongly dependents on the optical coupling and the phase detuning especially when modulation frequency is below gigahertz.
In this paper a complete small signal analysis for semiconductor laser frequency chirping in the presence of optical fiber ring feedback is presented. It shows that the chirp-to-power ratio (CPR) strongly dependents on the optical coupling and the phase detuning especially when modulation frequency is below gigahertz..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 787 (1989)
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Nonlinear Optics
Charge-transfer and its enhancement for Raman signal in Ag-molecule system
MIAO RENCAI, HUAN YIXIAN, and ZHANG PENGXIANG
The band of charge transfer transition is detected in optical absorption spectra when molecules are adsorbed on silver surface in silver sol and silver mirror. The charge transfer enhano ement for Kaman signal in Ag-molecule system is measured and its mechanism is analysed at the same time.
The band of charge transfer transition is detected in optical absorption spectra when molecules are adsorbed on silver surface in silver sol and silver mirror. The charge transfer enhano ement for Kaman signal in Ag-molecule system is measured and its mechanism is analysed at the same time..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 792 (1989)
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Optical Design and Fabrication
Paraxial imaging characteristics of a conical GRIN rod lens with spherical end surfaces
LIAO TINGDI, and ZOU YIRONG
In this paper we made a study of ray propagation and transformation through a conical GRIN rod lens with spherical end surfaces based on the formula of ray refraction on the spherical surfaces and the ray equation. On the basis of the ray transmitting matrix obtained an equivalent optical system of the conical GRIN rod
In this paper we made a study of ray propagation and transformation through a conical GRIN rod lens with spherical end surfaces based on the formula of ray refraction on the spherical surfaces and the ray equation. On the basis of the ray transmitting matrix obtained an equivalent optical system of the conical GRIN rod lens with spherical end surfaces is proposed. The formulas for determing the principal planes, focal planes and the focal lengths are derived and the paraxial imaging Gaussian formula is also given. All the results can b? applied to the oylindrioal or radial GRIN rod lens while the tapej: is made zero..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 836 (1989)
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A novel temporal correlator-display ultrasonic traveling wavefront by electrooptic modulator
YI MING, YANG XUANMIN, XI MAI, and GAN JINFU
A new method to display ultrasonic traveling wavefront by electrooptio modulator based on temporal correlation theory using CW laser has been developed, and high contrast image of ultrasonic traveling wavefront has been showed by special filtering technique based on considering the defference between moving phase objec
A new method to display ultrasonic traveling wavefront by electrooptio modulator based on temporal correlation theory using CW laser has been developed, and high contrast image of ultrasonic traveling wavefront has been showed by special filtering technique based on considering the defference between moving phase objects and static phase objects..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 853 (1989)
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Physical Optics
Studies on hybrid large current fiber sensor
CHEN XIKUN, ZONG WKIYONG, DAI LAIFA, and CAI YINGSHI
In this paper, the working principles and fabricating methods of hybrid large current fiber sensor have been described. The hybrid large current fiber sensor consists of a LED as light sourse, PIN as light receiver, flint glass as magnetic inductor and multimode fiber as light conductor. This sensor can be used for mon
In this paper, the working principles and fabricating methods of hybrid large current fiber sensor have been described. The hybrid large current fiber sensor consists of a LED as light sourse, PIN as light receiver, flint glass as magnetic inductor and multimode fiber as light conductor. This sensor can be used for monitoring the current in high voltage electric net and the applied range is 102-104A with accuracy of ±0.5%..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 860 (1989)
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Spectroscopy
Classification of CuXXII X-ray spectra in laser-produced plasma
ZHEN DANQING, ZHANG CHENGCHUAN, FAN PINGZHONG, and XI ZHIZHAN
Using a flat T1AP crystal speotrograph,we have recorded photographically the X-ray spctrum of laser-produced copper plasma in the range of 8-14A. According to Moseley rule combined with the method of rederiving wavelength from some known transitions, we have classified about one hundred new spectra of CuXXII, which bel
Using a flat T1AP crystal speotrograph,we have recorded photographically the X-ray spctrum of laser-produced copper plasma in the range of 8-14A. According to Moseley rule combined with the method of rederiving wavelength from some known transitions, we have classified about one hundred new spectra of CuXXII, which belong to the transitions 2P338 → 2822P4 and 2P33D → 2S22P4. The uncertainty of the calculated result is less than 5 mA. Compared with the experimental one..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 769 (1989)
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Thin Films
Ion-assisted deposition of ZnS and MgF
2
films
GU PEIFU, CHEN YUMING, HU XUEQUN, and TANG JINFA
Films of ZnS and MgP2 have been prepared by Ar-ion assisted deposition. The packing density of the MgF2 films has been increased from-0.8 without ion-bombardment to 0.9-0.95 with bombardment as determined by:the wavelength-shift measurement after moisture adsorption of filter. Experiment found thatabsorption and scatte
Films of ZnS and MgP2 have been prepared by Ar-ion assisted deposition. The packing density of the MgF2 films has been increased from-0.8 without ion-bombardment to 0.9-0.95 with bombardment as determined by:the wavelength-shift measurement after moisture adsorption of filter. Experiment found thatabsorption and scattering losses increased with the high energy ion (>lkeV) bombardment and the low energy ion(<0.7 keV) bombardment is shown to increase significantly the abrasion resistance and adherence of films without significantly degrading their optical performance. This technique is of important for application in praparing durable coatings on temperature sensitive substrates..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 815 (1989)
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A integrated optics technique for measuring the refractive indices of liquid and gas one and two-side leaky mode method
Go FuBIN, Li LINA, and JIN FENG
The refractive indices of some liquid and gas were measured by using one and two-side leaky mode method. Liquid or gas wag driped or filled between prism and substrate, so that these three layers media formed one or two sides leaky weveguide. The mode refractive indices of resonant modes were measured by using the pris
The refractive indices of some liquid and gas were measured by using one and two-side leaky mode method. Liquid or gas wag driped or filled between prism and substrate, so that these three layers media formed one or two sides leaky weveguide. The mode refractive indices of resonant modes were measured by using the prism coupler, and the refractive index of the liquid or gas was determined from corresponding mode equations. Measure(?) results shown that errors of the refractive indices are with in 1~3×10-4. The measnremenli accuracies were analysed and discussed theoretically..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 823 (1989)
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Damage threshold dependence of multilayer laser mirrors on coating design
Wu ZHOULING, and FAN ZHENGXIN
Damage threshold of TiO/SiO2 and ZrO2/SiO2 coatings with different structures——A(HL)mHG,A[(2p+1)HL]m(2p+1)HG and A[H(2q+1)L]mHG——were measured. The results showed a strong dependence of damage resistance on coating design. Generally, an increase in film thickness of the high refracting component (especially up to p=2)
Damage threshold of TiO/SiO2 and ZrO2/SiO2 coatings with different structures——A(HL)mHG,A[(2p+1)HL]m(2p+1)HG and A[H(2q+1)L]mHG——were measured. The results showed a strong dependence of damage resistance on coating design. Generally, an increase in film thickness of the high refracting component (especially up to p=2) lends to a strong decrease in the laser damage resistance, while all the systems had an increase in damage threshold with enhancing thickness of the low refracting component up to q=2. The damage threshold of the q=3 systems is oommonly higher than that of q=0 systems, but lower than q=2 systems. For the systems with q greater than 3’ the damage resistanoe decreases very quickly, being much lower than thati of the standard systems wiih q=0..
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Acta Optica Sinica
Publication Date: Jan. 01, 1900
Vol. 9, Issue 9, 830 (1989)
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Research Article
Fiber Optics and Optical Communications
Fourier Optics and Signal Processing
Lasers and Laser Optics
Nonlinear Optics
Optical Design and Fabrication
Physical Optics
Spectroscopy
Thin Films