Contents
1988
Volume: 8 Issue 5
16 Article(s)
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Research Article
Holography
Traversing area partition technique and its application in 2D/3D embossing holograms
XIE JINGHUI, ZHAO YELING, and YU MEIWEN
A new technique for manufacturing 2D/3D embossing holograms, the traversing area partition method, is presented. The basic principle, designing considerations and calculating formulae of the technique are described. In addition, we propose a method using double colour circulation or multiple colour circulation to increA new technique for manufacturing 2D/3D embossing holograms, the traversing area partition method, is presented. The basic principle, designing considerations and calculating formulae of the technique are described. In addition, we propose a method using double colour circulation or multiple colour circulation to increase the vertical viewing angle and the striped-speckle screen to increase the horizontal viewing angle. We have used this technique to make a lot of new 2D/3D embossing holograms successfully. Some of the results are shown in this paper..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 410 (1988)
Archival storage of color films using Fourier transform holograms
ZHANG JINGFANG, and WANG MINZAO
A method for storage of color films using Fourier transform holograms isp resented. Three point-holograms are recorded with red, green and blue laser beams through two gratings, located in object beam and reference beam paths respectively. When the same color narrow beams illuminate their own holograms, two pure color A method for storage of color films using Fourier transform holograms isp resented. Three point-holograms are recorded with red, green and blue laser beams through two gratings, located in object beam and reference beam paths respectively. When the same color narrow beams illuminate their own holograms, two pure color images can be observed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 417 (1988)
Real time color coding of differential interference
LIU LIREN
A new principle is proposed to pseudocolor-code the differential interference in the grating-diffraction interferometry with extended white light illumination by using dispersion effect of a prism. The phase gradients of the tested object are shown by coding colors monotonically with a determinating period. The conditiA new principle is proposed to pseudocolor-code the differential interference in the grating-diffraction interferometry with extended white light illumination by using dispersion effect of a prism. The phase gradients of the tested object are shown by coding colors monotonically with a determinating period. The conditions to yield such coding colors as spectral colors, mixing colors of high purity or fullcolors are discussed. Possible profiles of gratings are then given to obtain an exact differentiation. So, real and effeotive oo]or coding of in-terferomeirioal fringes is realised for the first time..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 422 (1988)
Signal processing using acousto-optical technology
LI NING
An experimental system for simulative signal processing using high frequency wideband aoousto-optioal device is proposed and mathematical expressions of output of the system are derived. The experimental results of both space and time integreting convolution (oorrelation) for the simulative signals oomposed of reot impAn experimental system for simulative signal processing using high frequency wideband aoousto-optioal device is proposed and mathematical expressions of output of the system are derived. The experimental results of both space and time integreting convolution (oorrelation) for the simulative signals oomposed of reot impulses are in agreement with calculation on the whole..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 429 (1988)
Realization of character recognition by means of joint transform
SHEN XIAOQING, CAO JUNQING, LIU WENSHAN, and ZHUANG SONGLIN
The correlation property of the joint transform is utilized and the parallel recognition of tho multiplying character signals is analysed and realized. The experiments show that the process gives a high signal to noise ratio and a good sensitivity. The method is much simple and practical than the conversional matched fThe correlation property of the joint transform is utilized and the parallel recognition of tho multiplying character signals is analysed and realized. The experiments show that the process gives a high signal to noise ratio and a good sensitivity. The method is much simple and practical than the conversional matched filter method for the character recognition..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 435 (1988)
Instrumentation, Measurement and Metrology
Adaptive optics correction in real-time for dynamic wavefront errors
JIANG WeNHAN
The principle of an adaptive optics system for correcting dynamic wavefront errors in real-time is introduced. This system consists of a 21-element deformable mirror, a lateral shearing interferometer and a parallel electronical control system. The experimental results show that it can effectively compensate dynamio waThe principle of an adaptive optics system for correcting dynamic wavefront errors in real-time is introduced. This system consists of a 21-element deformable mirror, a lateral shearing interferometer and a parallel electronical control system. The experimental results show that it can effectively compensate dynamio wavefront errors with a bandwidth of 300Hz..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 441 (1988)
Refraction in levelling and two-wavelength effect of laser
DAI BANGWEN
The authors point out that "The layers with same temperature are not quite parrallel to the ground and are changable tinder different condition" (i.e. the layers are divided arbitrarily). Under such an assumption the correcting formula for refraction in levelling has been derived concerning the effect of lighThe authors point out that "The layers with same temperature are not quite parrallel to the ground and are changable tinder different condition" (i.e. the layers are divided arbitrarily). Under such an assumption the correcting formula for refraction in levelling has been derived concerning the effect of light dispersion. The formula with the precision 10-6 is as follows The necessity and the possibility to develop the two wavelengths laser levelling instrument are suggested and the technical parameter ....
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 460 (1988)
Materials
The energy level of FA center in KCI crystals
LOU YONGQIN, FANG SHUGAN, and ZHANG QIREN
In calculation of the energy levels of FA centers in KCl crystals, the difference of the ability of binding an electron between host and doping ions affects the distribution of binding electron cloud of FA center. It is the basis for choosing a calculation method of electron energy level ef FA centers. The energy levelIn calculation of the energy levels of FA centers in KCl crystals, the difference of the ability of binding an electron between host and doping ions affects the distribution of binding electron cloud of FA center. It is the basis for choosing a calculation method of electron energy level ef FA centers. The energy level of three kinds of typical doping: Li:KCl:FA(II); Cu:KCl:FA (III), T1:KCI:FA(III) have been caloulated in this paper. The deviations are less than 5% as compared with experimental values..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 467 (1988)
Rapid Communications
The effect of parametric amplification produced picosecond pulses
CUI YIBEN, QI HONGXING, LI GONGPU, and PAN ZHONGHAN
In this paper the parametric LiNbO3 crystal of angular tuning pumped by 0.53μm trains of picosecond ultrashort pulses was reported. We have obtained energy converse efficiency 1% of single-pass parameirio amplification. The frequency range 0.8-1.6μm of timing curves of the signal and idler pulses was mersured.In this paper the parametric LiNbO3 crystal of angular tuning pumped by 0.53μm trains of picosecond ultrashort pulses was reported. We have obtained energy converse efficiency 1% of single-pass parameirio amplification. The frequency range 0.8-1.6μm of timing curves of the signal and idler pulses was mersured..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 474 (1988)
Colored Morie topography
LIU LIREN
Based on the dispersion of prism, a new method is proposed for pseudocolor-coding the fringes of Moire topography. Two typical systems with a single prism and a pair of complementary prisms are discussed. The experimental of demostoation is given too.Based on the dispersion of prism, a new method is proposed for pseudocolor-coding the fringes of Moire topography. Two typical systems with a single prism and a pair of complementary prisms are discussed. The experimental of demostoation is given too..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 478 (1988)
Spectroscopy
Spectral properties of CdS (Se) micro-crystallites in glasses
ZHANG JINSHAN, GAN FUXI, and QI CHANGHONG
The absorption, excitation, and emission spectra of CdS(Se) microcrystallites in glass are measured, and their temperature dependances from 10 K to 300 K are obtained. The results are compared with the reported results for correspondent crystals. The possible transition mechanism is discussed.The absorption, excitation, and emission spectra of CdS(Se) microcrystallites in glass are measured, and their temperature dependances from 10 K to 300 K are obtained. The results are compared with the reported results for correspondent crystals. The possible transition mechanism is discussed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 385 (1988)
Raman scattering by surface photon-polaritions
Gu ZHENGONg, CHANG YuQIn, LAI ZhuyoU, and ZHUANg ZHIcHEN
In this paper, we present the study of Raman Scattering by Surface Polaritons (SPs). Based on the Attenuated Total Reflection method (ATR method) and Raman Scattering method and refered to the method of Raman Scattering under ATRf conditions (RSATR) in Kretchmann configuration, we have suggested a method o RSATR with OIn this paper, we present the study of Raman Scattering by Surface Polaritons (SPs). Based on the Attenuated Total Reflection method (ATR method) and Raman Scattering method and refered to the method of Raman Scattering under ATRf conditions (RSATR) in Kretchmann configuration, we have suggested a method o RSATR with Otto configuration and have made a series of experiments on the sample of single crystal CaF2. Theoretically we have got a phenomenologioal dispersion relation of SPs on the boundary between CaF2 and air using the law of energy conservation and the law of momentum, conservation parallel the sample stirfaoe as well as general dispersion relation of SPs derived from surface Green fnnotion or surface response ftmotion. With the help of sample carrier specially designed, the experiment was carried out to measurle ihe dispersion relation of SPs. Comparison indicates that the experimental resnlis are in good agreement with that of theory..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 391 (1988)
Spectra of atomic lead beam by UV 283.3 nm laser excitation
DING DAJUN, LIU HANG, and K. T. LU
Atomic fluorescences in a Pb beam excited by a UV tunable laser were measured under different exodting intensities. Theoretic analysis is based on the three-level rate equation, which includes a process of two-photon ionisation. A good agreement was obtained between the experiment and the calculation.Atomic fluorescences in a Pb beam excited by a UV tunable laser were measured under different exodting intensities. Theoretic analysis is based on the three-level rate equation, which includes a process of two-photon ionisation. A good agreement was obtained between the experiment and the calculation..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 404 (1988)
Thin Films
Study of transparent conducting indium-doped ZnO films prepared by D. C. reactive magnetron sputtering
YE ZHIZHENG, and TANG JINFA
Transparent conducting films ZnO have been prepared by D. C. reactive magnetron sputtering through modified S-gun in corporating Zn target inlaid with indium in proportion on its surface. Films with resistity of 1.08 × 10-3 Ωcm, transmittance of around 80% in the visible region were obtained. Conductive mechanism Transparent conducting films ZnO have been prepared by D. C. reactive magnetron sputtering through modified S-gun in corporating Zn target inlaid with indium in proportion on its surface. Films with resistity of 1.08 × 10-3 Ωcm, transmittance of around 80% in the visible region were obtained. Conductive mechanism of indium-doped ZnO films was explained on semiconductors physios theory. Optical properties were modeled by the Drude theory of free electron from the visible region to the infrared region. The result showed that oaloiilaied yalue of optical properties agreed well wiilL experimental data..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 448 (1988)
Low-energy ion-assisted deposition of Ta2O5 films
ZHOU JIuliN, ZHANG WAN, and YAnG DELI
A series of Ta2O5 films have been made by low-energy oxygen-ion assisted deposition. The microstructures of the films have been observed. The optical absorptance and scattering have been measnred too. Experiments show that transparent and homogeneous Ta2O5 films can be obtained only if ion bombardment and heating of thA series of Ta2O5 films have been made by low-energy oxygen-ion assisted deposition. The microstructures of the films have been observed. The optical absorptance and scattering have been measnred too. Experiments show that transparent and homogeneous Ta2O5 films can be obtained only if ion bombardment and heating of the substrate are performed simultaneously during deposition..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 8, Issue 5, 454 (1988)
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