Contents
1992
Volume: 12 Issue 10
20 Article(s)
Export citation format
Fourier Optics and Signal Processing
Optical image processing using paraboloidal mirror
[in Chinese], and [in Chinese]
This paper deals with the transfer characteristics of paraboloidal mirror. Optical image processing system using single paraboloidal mirror is proposed. Experiments with coherent light, partially coherent light and white light processing, have proved the feasibility for the system. The practical significance for the syThis paper deals with the transfer characteristics of paraboloidal mirror. Optical image processing system using single paraboloidal mirror is proposed. Experiments with coherent light, partially coherent light and white light processing, have proved the feasibility for the system. The practical significance for the system are discussed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 907 (1992)
Lasers and Laser Optics
Fluorescence and laser characteristics of sodium salicylate in polar solvents
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Fluorescence and laser characteristics of the sodium Salicylate in polar solvents have been studied systematically. Through comparing its emission spectra and the distribution of tunable laser energy it is found that there is a strong self-absorption of excited states in sodium Salicylate. The curves of fluorescence inFluorescence and laser characteristics of the sodium Salicylate in polar solvents have been studied systematically. Through comparing its emission spectra and the distribution of tunable laser energy it is found that there is a strong self-absorption of excited states in sodium Salicylate. The curves of fluorescence intensity via solution temperature are given for these kinds of solution. It was considered that these temperature responses are due to the flexible plane molecular structure of sodium Salicylate..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 888 (1992)
Measurements of principal refractive indices and their thermal coefficients of LiNbO_3 crystal heavily doped with magnesium
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
In this paper we report the principal refractive indices n0, n , and their thermal coefficients of LiNbO3 crystal doped with 5 mol % MgO. The principal refractive indices of the crystal have been measured by selfeolliniating method for the wavelengths of 0.5398 μm,0.6323 μm, 1.0795μm and 1.3414 μm in the temperature raIn this paper we report the principal refractive indices n0, n , and their thermal coefficients of LiNbO3 crystal doped with 5 mol % MgO. The principal refractive indices of the crystal have been measured by selfeolliniating method for the wavelengths of 0.5398 μm,0.6323 μm, 1.0795μm and 1.3414 μm in the temperature range of 20°-160℃. The thermal coefficients of the refractive index have been obtained at these wavelengths and constants of the modified Sellmeier's equations are also evaluated in the above mentioned temperature range. The results are used to the values obtained are in good agreement with the experimental results, similarly calculation of noncritical phase matching temperature for SHG gives a result which also agrees with the experimental result fairly well..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 925 (1992)
Theoretical analyses of extrinsic scattering loss in fluoride glass fiber
[in Chinese], [in Chinese], and [in Chinese]
In this paper, the extrinsic scattering loss induced by the defects in fluoride fiber has been described in detail. The relationship among the extrinsic scattering; loss and the optical wavelength and size of defects has been discussed and some new concl usions have been drawn. These work leads to some directions for iIn this paper, the extrinsic scattering loss induced by the defects in fluoride fiber has been described in detail. The relationship among the extrinsic scattering; loss and the optical wavelength and size of defects has been discussed and some new concl usions have been drawn. These work leads to some directions for improving the fiber drawing technique and decreasing the fiber loss..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 929 (1992)
Nonlinear Optics
Intracavity frequency doubling of DH-LD A pumped Nd:YAG laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Intracavity frequency doubling of a home-made DH diode laser array (DH-LDA) pumped Nd:YAG laser at wavelength of 0.532μm was obatained. The green light output power was 0.6mW with doubling efficiency 2%. The stable output of doubled light in the pump condition of different duration and power with high repetition rate wIntracavity frequency doubling of a home-made DH diode laser array (DH-LDA) pumped Nd:YAG laser at wavelength of 0.532μm was obatained. The green light output power was 0.6mW with doubling efficiency 2%. The stable output of doubled light in the pump condition of different duration and power with high repetition rate was observed by using the method of phase delaying. The threshold was theoretically analyzed, which agreed well with the experimental results..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 865 (1992)
Study of the divergence of stimulated Brillouin scattering
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The influence of the phase conjugation effect and the threshold effect of stimulated scattering on the divergence of stimulated scattering was discussed. Compared with the pumping beam, the divergence angles of stimulated Brillouin scattering (SBS) in methanol, ethanol and acetone were reduced to a factor of 3.2, 3.0 aThe influence of the phase conjugation effect and the threshold effect of stimulated scattering on the divergence of stimulated scattering was discussed. Compared with the pumping beam, the divergence angles of stimulated Brillouin scattering (SBS) in methanol, ethanol and acetone were reduced to a factor of 3.2, 3.0 and 2.4 while the pulse durations were compressed to 4.3, 4.3 and 2.6. The relation between the divergence angle of the stimulated Brillouin scattering and the pumping energy was obtained..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 869 (1992)
Experimental studies of self-mode locking in a CuBr laser
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
It is reported for the first time that highly stable and complete modulation self-mode looking pulse trains of the green and yellow light are obtained simultaneously in a longitudinal discharge OuBr laser. The effects of high-order transverse modes, pump power and the length of the resonator on the self-mode looking puIt is reported for the first time that highly stable and complete modulation self-mode looking pulse trains of the green and yellow light are obtained simultaneously in a longitudinal discharge OuBr laser. The effects of high-order transverse modes, pump power and the length of the resonator on the self-mode looking pulse trains and the frequency spectra of their modes have also been studied experimentally..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 873 (1992)
Study of SRS birefringence fiber
[in Chinese], and [in Chinese]
In the paper, stimulated Eaman scattering (SES) of birefringence fiber is studied in detail. 9-th order Stokes line of SES has been observed. The dependence of threshold and Baman shift on polarization of pumping light are discussed, The transmission loss of pumping light polarization along the direction of major or miIn the paper, stimulated Eaman scattering (SES) of birefringence fiber is studied in detail. 9-th order Stokes line of SES has been observed. The dependence of threshold and Baman shift on polarization of pumping light are discussed, The transmission loss of pumping light polarization along the direction of major or minor axis of fiber core are measured, SES gain coefficient of birefringence fiber is theoretically calculated with measured threshold..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 879 (1992)
Studies of the properties of self-pumped phase conjugation in KNSBN:Co crystals
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Self-pumped phase eonjugation(SPPC) hag been observed in KNSBN:Co crystals with sizes different. The dependence of phase conjugate reflectivity has been proved not only on the incident angle and incident position, but also on the laser wavelengths by experiments. Their experimental plots are shown respectively. The larSelf-pumped phase eonjugation(SPPC) hag been observed in KNSBN:Co crystals with sizes different. The dependence of phase conjugate reflectivity has been proved not only on the incident angle and incident position, but also on the laser wavelengths by experiments. Their experimental plots are shown respectively. The large crystal produce up to 73.0% phase conjugate reflectivity at 514.5 nm. The dependence of phase conjugate formation time on input intensity is shown. During producing the phase conjugation, the character of both intensities of the transmitted beam and reflected beam of the crystal varying with the time is presented. The reason for producing threshold intensity is explained..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 883 (1992)
Physical Optics
A technique of imagining UHF acoustic traveling wavefront by standing wave modulating laser
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A novel technique of imaging a ultrasonic traveling wavefront has been developed. It is based on correlating interaction between modulated ultrasonic standing waves and ultrasonic traveling waves. The results of correlation imaging have been analysed and proved by experiments. A higher contrast image of the ultrasonic A novel technique of imaging a ultrasonic traveling wavefront has been developed. It is based on correlating interaction between modulated ultrasonic standing waves and ultrasonic traveling waves. The results of correlation imaging have been analysed and proved by experiments. A higher contrast image of the ultrasonic travefront has been obtained..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 914 (1992)
Spinor theory of diffraction from aperture in slant illumination
[in Chinese], and [in Chinese]
In this paper, diffraction from plane aperture with plane electromagnetic wave slant illumination is analyzed using the spinor formulism of electromagnetism. A formula of diffraction intensity is obtained with arbitrary illumination and which is agreement with the formula of reference in the special case.In this paper, diffraction from plane aperture with plane electromagnetic wave slant illumination is analyzed using the spinor formulism of electromagnetism. A formula of diffraction intensity is obtained with arbitrary illumination and which is agreement with the formula of reference in the special case..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 921 (1992)
Quantum Optics
Quantum statistical properties of orthonormalization eigenstates of the k-th power of photon aninihiation operator
[in Chinese], and [in Chinese]
In this paper, the amplitude squeezing effect and the anti-bunching effect of the orthonormalization eigenstates of the k-th power of photon aninahiation operator are disscuseed in detail.In this paper, the amplitude squeezing effect and the anti-bunching effect of the orthonormalization eigenstates of the k-th power of photon aninahiation operator are disscuseed in detail..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 902 (1992)
Rapid Communications
Observation and research of new Raman spectra characterizing nanocrystalline materials
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
We present the Eaman spectra of nanocrysttalline materials of ZrO2 and SnO2 for various particle sizes. After comparative observation and analysis, we discover and study the new spectra characterized by nanocrystalline materials.We present the Eaman spectra of nanocrysttalline materials of ZrO2 and SnO2 for various particle sizes. After comparative observation and analysis, we discover and study the new spectra characterized by nanocrystalline materials..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 946 (1992)
Study of laser frequency stabilization with external Doppler frequency modulation
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
By utilizing an external Doppler dither modulation scheme, the frequency of the CO2 laser 10P(16) and 10P(18) lines are locked at the centers of the saturated absorption lines of SF6 molecules in an external absorption cell. The locked laser has a frequency fluctuations of some 7 kHz. The looked laser output has neitheBy utilizing an external Doppler dither modulation scheme, the frequency of the CO2 laser 10P(16) and 10P(18) lines are locked at the centers of the saturated absorption lines of SF6 molecules in an external absorption cell. The locked laser has a frequency fluctuations of some 7 kHz. The looked laser output has neither parasitic frequency modulation nor parasitic amplitude modulation. The stabilized frquency is independent of laser operating characteristics..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 950 (1992)
Lasing properties of a GGG crystal slab laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The laging properties of a 6×16×84 mm GGG crystal slab were measured and its thermal lensing effect was investigated under high power pumping.The laging properties of a 6×16×84 mm GGG crystal slab were measured and its thermal lensing effect was investigated under high power pumping..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 953 (1992)
Light scattering of polyethylens spherulites with concentric-circle
[in Chinese], and [in Chinese]
In this paper, the light scattering patterns of polyethylene spherulitea with concentric-circle extinction are examined by wide-angle laser scattering instrument. Based on the model of effective dipole moment and by moans of Fourier transform and diffraction grating principle, the causes of pattern formation are analysIn this paper, the light scattering patterns of polyethylene spherulitea with concentric-circle extinction are examined by wide-angle laser scattering instrument. Based on the model of effective dipole moment and by moans of Fourier transform and diffraction grating principle, the causes of pattern formation are analysed and the twisted phenomena of lamellae are further discussed. The theoretical analysis is in agreement with the experimental result..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 956 (1992)
Spectroscopy
Excitonic absorption spectra of ZnSe-ZnS strained-layer superlattlces
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The excitonic absorption spectra of ZnSe-ZnS strained-layer superlattices were measured at temperatures ranging from 16 K to room temperature. Three excitonic absorption peaks corresponding to 1 E-l HH, 1E-1 LH and 1E-3HH transitions were observed.The excitonic absorption spectra of ZnSe-ZnS strained-layer superlattices were measured at temperatures ranging from 16 K to room temperature. Three excitonic absorption peaks corresponding to 1 E-l HH, 1E-1 LH and 1E-3HH transitions were observed..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 893 (1992)
Temperature dependence of the near-infrared photoluminescence spectroscopies in Ga0.5In0.5P epilayer grown on GaAs substrate by MOCVD method
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The near-Infrared photoluminescence spectroscopies of Ga0.5In0.5P epilayer grown on GaAs substrate by metalorganic chemical vapor deposition (MOCVD) are measured. Three photoluminegcence peaks from deep levels are observed, and their peak energies are 1.17, 0.99 and 0.85eV, respectively. We further investigate the tempThe near-Infrared photoluminescence spectroscopies of Ga0.5In0.5P epilayer grown on GaAs substrate by metalorganic chemical vapor deposition (MOCVD) are measured. Three photoluminegcence peaks from deep levels are observed, and their peak energies are 1.17, 0.99 and 0.85eV, respectively. We further investigate the temperature dependence of the intensity, peak position and half width of the photoluminescence bands and discuss their origins..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 897 (1992)
Thin Films
High power CO2laser window materials and their antireflection coatings
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Appropriatre figure of merit for describing a meterial used for a high power laser window has been pressented. And characteristics comparisons of four materials including Ge, GaAs, ZnSe and KCl have been made. The optical element made from the single crystals of KCl urned out to have good performance. An antireflectionAppropriatre figure of merit for describing a meterial used for a high power laser window has been pressented. And characteristics comparisons of four materials including Ge, GaAs, ZnSe and KCl have been made. The optical element made from the single crystals of KCl urned out to have good performance. An antireflection coating with low absorptance and high laser damage threshold has been designed and prepared..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 934 (1992)
Ellipsometry study on the non-mirr or surface films
[in Chinese], [in Chinese], and [in Chinese]
The three-layer-film model for SnO2:F film with chorionic surfaces is suggested. Using the matrix of interface and the layer matrix representing the properties of propogation of plane waves, we have deduced the scattering matrix and the overall reflection coefficient of the three-layer structure and obtained the basic The three-layer-film model for SnO2:F film with chorionic surfaces is suggested. Using the matrix of interface and the layer matrix representing the properties of propogation of plane waves, we have deduced the scattering matrix and the overall reflection coefficient of the three-layer structure and obtained the basic formula of the reflection ellipsometry. The dispersion relation and thickness of SnO2:F films with chorionic surfaces have been measured by using the spectroscopic reflection ellipsometry..
Acta Optica Sinica
- Publication Date: Jan. 01, 1900
- Vol. 12, Issue 10, 941 (1992)
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20