Journals
Advanced Photonics
Photonics Insights
Advanced Photonics Nexus
Photonics Research
Advanced Imaging
View All Journals
Chinese Optics Letters
High Power Laser Science and Engineering
Articles
Optics
Physics
Geography
View All Subjects
Conferences
CIOP
HPLSE
AP
View All Events
News
About CLP
Search by keywords or author
Login
Registration
Login in
Registration
Search
Search
Articles
Journals
News
Advanced Search
Top Searches
metasurface
laser
polarization
nir
lidar
lithium niobate
Home
About
Ethics
Editorial Board
Contact Us
All Issues
Journals >
Chinese Journal of Lasers
Contents
1998
Volume: 25 Issue 11
21 Article(s)
Select format
EndNote (RIS)
BibTex
Plain Text
Export citation format
Research Article
Magneto optical Properties of Nanometer Crystal Giant Magneto-optical BiAlDyIG Thin Film Materials
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Based on the analysis of frequency spectrum of Faraday angle in blue and violet light ranges for BiAlDyIG materials, we have perpared a fine quality BiAlDyIG thin film by a pyrolysis method and crystalized the film with rapid recurrent thermal annealing. The effective Faraday angle of RRTA sample is over about 0.5 degr
Based on the analysis of frequency spectrum of Faraday angle in blue and violet light ranges for BiAlDyIG materials, we have perpared a fine quality BiAlDyIG thin film by a pyrolysis method and crystalized the film with rapid recurrent thermal annealing. The effective Faraday angle of RRTA sample is over about 0.5 degree larger than that of the common samples, and its Faraday angle increases with the number of recurrent annealing increasing, which is due to the finess of the grain and many Bi 3+ -O 2- -Fe3+ are informed. Meanwhile, the concentration variation of Al3+ions in octahedral and tetrahedral sites results in a decrease of curie temerature (140~160℃). These results are very promising for improving the recirding density and signal-noise-ratio..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 976 (1998)
Get PDF
Generation of a 5 ps Ultrashort UV Laser Pulse
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper describes a fourth harmonic system for a 1 06 μm laser using nonlinear optic crystals, which are a frequency doubling KTP crystal and a frequency quadrupling LAP crystal. Using computer simulation, we have got optimal parameters of the harmonic device. Some parameters of affecting the harmonic conversion eff
This paper describes a fourth harmonic system for a 1 06 μm laser using nonlinear optic crystals, which are a frequency doubling KTP crystal and a frequency quadrupling LAP crystal. Using computer simulation, we have got optimal parameters of the harmonic device. Some parameters of affecting the harmonic conversion efficiency, phased matching, maximum direction of the effective nonlinear coefficient and threshold power are discussed. This fourth harmonic system offers wide applications to the diagnostics of the soft X-ray ps streak camera and framing camera, nonlinear optics and other ultrafast phenomena study. Finally, a 5 ps ultrashort UV laser has been generated and measured using astreak camera..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 981 (1998)
Get PDF
Experimental Studies of Influnce of Resonant Cavity Length Modulation on the Laser Coherence
[in Chinese], and [in Chinese]
The experimental studies of influnce of laser coherence induced by the resonant cavity length modulation is introduced in this paper. A theoretical analysis shows that the influnce mechanism is the random vibration of the resonant cavity mirror induced with the PZT.
The experimental studies of influnce of laser coherence induced by the resonant cavity length modulation is introduced in this paper. A theoretical analysis shows that the influnce mechanism is the random vibration of the resonant cavity mirror induced with the PZT..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 985 (1998)
Get PDF
The Experimental Research of a Broadband Erbium-oped Fiber Superfluorescence Source
[in Chinese], [in Chinese], and [in Chinese]
With all utensils made in China we have successfully manufactured a broadband Er 3+ doped fiber superfluorescence source. The basic characteristics of the superfluorescence source, such as the output power, output linewidth, and the change of the linewidth with temperature, have been analyzed and studied. And rather go
With all utensils made in China we have successfully manufactured a broadband Er 3+ doped fiber superfluorescence source. The basic characteristics of the superfluorescence source, such as the output power, output linewidth, and the change of the linewidth with temperature, have been analyzed and studied. And rather good experimental results have been obtained. To address directly the question why the natural fluorescence spectrum of the broadband source has a pinnacle structure which results in a too narrow linewidth, we present a simple but effective measure to restrain the pinnacle. Consequently, a spreaded frequency spectrum with a satisfactory width has been obtained..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 989 (1998)
Get PDF
Instabilities and Self-switching in a Nonlinear Directional Coupler
[in Chinese], and [in Chinese]
Instabilities and self switching in a nonlinear directional coupler with single input excitation are discussed. The approximate analytical solutions to the nonlinear coupling equation near the critical power are obtained.
Instabilities and self switching in a nonlinear directional coupler with single input excitation are discussed. The approximate analytical solutions to the nonlinear coupling equation near the critical power are obtained..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 993 (1998)
Get PDF
The Focus Variable Mirror with Varying Pressure in the Flexible Focus Variable System
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The varying character of the curvature of a water cooled mirror′s surface with varying coolant pressure has been studied. The wavefront aberration of the mirror after pressure deformation has also been analyzed. It is shown that the focus variable mirrors with varying coolant pressure are suitable for the middle infrar
The varying character of the curvature of a water cooled mirror′s surface with varying coolant pressure has been studied. The wavefront aberration of the mirror after pressure deformation has also been analyzed. It is shown that the focus variable mirrors with varying coolant pressure are suitable for the middle infrared laser system..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 998 (1998)
Get PDF
Holography and Information Processing
Mathematical Morphological Binary Image Real time Parallel Processing Using Optical Frequency Filtering of Complex-alued Kernel
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The combination of optical real time parallelism with computer′s flexibility can implement real time optical image morphology parallel processing. In this paper a real time optical processing system with a mathematical morphological new approach of optical frequency filtering for complex valued kernel structure element
The combination of optical real time parallelism with computer′s flexibility can implement real time optical image morphology parallel processing. In this paper a real time optical processing system with a mathematical morphological new approach of optical frequency filtering for complex valued kernel structure element to implement binary image real time parallel processing is proposed..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1031 (1998)
Get PDF
Multiple Image Storage in Push pull Azobenzene Compounds
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The newly synthesized push pull azobenzene compounds were doped in the PMMA film. Their multiple storage characters were studied. The excellent real time and long time double image storages were obtained. The associative memory image storage was achieved. Furthermore, the storage mechanism is explained.
The newly synthesized push pull azobenzene compounds were doped in the PMMA film. Their multiple storage characters were studied. The excellent real time and long time double image storages were obtained. The associative memory image storage was achieved. Furthermore, the storage mechanism is explained..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1035 (1998)
Get PDF
Laser Manufacturing
Study of Laser Lateral Scattering Used to Measure Particle Size Distribution
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper puts forward a method based on Mie scattering theory, which detects the lateral scattering light from a new view point. A novel theoretical calculation model is established. According to this principle the measuring range of particle sizes is extended while technical requirements are reduced. Combining with
This paper puts forward a method based on Mie scattering theory, which detects the lateral scattering light from a new view point. A novel theoretical calculation model is established. According to this principle the measuring range of particle sizes is extended while technical requirements are reduced. Combining with mature semiconductor lasers and the CCD image technique, this method will make the particle sizer portable and more sensitive..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1040 (1998)
Get PDF
Influence of Assistant Gases on the Shielding Thresholds of Laser Induced Plasma During High Power CO
2
Laser Penetration Welding
[in Chinese], [in Chinese], and [in Chinese]
The influence of assistant gases on the thresholds of laser induced plasma shielding was studied by using a 20 kW CO 2 laser processing system to weld low carbon steel. The results demonstrate that the critical power densities of laser induced plasma shielding for different assistant gases are in the order from low to
The influence of assistant gases on the thresholds of laser induced plasma shielding was studied by using a 20 kW CO 2 laser processing system to weld low carbon steel. The results demonstrate that the critical power densities of laser induced plasma shielding for different assistant gases are in the order from low to high values as following: Ar→N 2→CO 2→He. The plasma shielding threshold could be as low as 1.85×10 6 W/cm 2 when argon was used as the assistant gas in our experiment. The influence of gas on the threshold of plasma shielding depends mainly on the thermal conductivity and dissociation energy of gas, while the influence of ionization enetgy is the secondary compared to the thermal conductivity and dissociation energy. The low power density of plasma shielding in argon is dominantly due to the poor thermal conductivity of argon which causes that the LSC wave can easily overheat and propagate..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1045 (1998)
Get PDF
Study of a Laser Automatic Position Shifting Measuring System for the Auto-body 3-D Shape Measurement
[in Chinese]
A kind of the laser and CCD optigonometry automatic position shifting measuring method for the auto body 3 D curved surface shape is presented in this paper. The principle and the measuring process of the method are analyzed. The expermental system is described. The results of the experiment are provided and have shown
A kind of the laser and CCD optigonometry automatic position shifting measuring method for the auto body 3 D curved surface shape is presented in this paper. The principle and the measuring process of the method are analyzed. The expermental system is described. The results of the experiment are provided and have shown that the measurement method and system may be practically valuable..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1051 (1998)
Get PDF
Laser Physics
A Blue-violet Laser by Direct Laser diode Frequency Doubling
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A blue-violet laser is described by direct laser diode frequency doubling with a new nonlinear organometallic complex CMTC crystal. At room temperature, a blue-violet light output of 11.8 mW (λ=404 nm) is realized. With a 4 mm-long crystal, a SHG conversion efficiency of 0.60% (λ=808 nm) is obtained.
A blue-violet laser is described by direct laser diode frequency doubling with a new nonlinear organometallic complex CMTC crystal. At room temperature, a blue-violet light output of 11.8 mW (λ=404 nm) is realized. With a 4 mm-long crystal, a SHG conversion efficiency of 0.60% (λ=808 nm) is obtained..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 961 (1998)
Get PDF
Experimental Study of a Nd:glass Slab Oscillator and Two-stage Amplifier System of High Beam Quality
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A Nd:glass slab oscillator and two stage amplifier system has been built up. Using a novel Cr 4+ :YAG colour centre crystal, the Q switching experiments, have been performed. After two stage amplifications, the near diffraction limit beam quality of M2x=M2y=1.5 and energy amplification of 10.1 have been achieved.
A Nd:glass slab oscillator and two stage amplifier system has been built up. Using a novel Cr 4+ :YAG colour centre crystal, the Q switching experiments, have been performed. After two stage amplifications, the near diffraction limit beam quality of M2x=M2y=1.5 and energy amplification of 10.1 have been achieved..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 965 (1998)
Get PDF
Hybrid Cavity Semiconductor Laser with an In-iber Bragg Grating Used as Feedback
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A hybrid semiconductor laser is fabricated by combining an anti reflection coated F P laser chip with an in fiber Bragg grating (FBG). The cavity length is about 3 cm and the peak reflection of the FBG is 50%. At a bias of 50 mA, the output is 1 mW with a side mode suppression ration of 37.6 dB. A simple theoretical an
A hybrid semiconductor laser is fabricated by combining an anti reflection coated F P laser chip with an in fiber Bragg grating (FBG). The cavity length is about 3 cm and the peak reflection of the FBG is 50%. At a bias of 50 mA, the output is 1 mW with a side mode suppression ration of 37.6 dB. A simple theoretical analysis is also given..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 970 (1998)
Get PDF
Generation of the 1.871 μm Laser Oscillation from a Monomode Tm
3+
-doped Silicate Fiber
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The preliminary experimental results of the generation of the 1.871 μm laser oscillation from a monomode Tm 3+ doped silicate fiber pumped by a 1.053 μm laser is reported. The maximum output power is 153 μW, and the slope efficiency is 0.32%.
The preliminary experimental results of the generation of the 1.871 μm laser oscillation from a monomode Tm 3+ doped silicate fiber pumped by a 1.053 μm laser is reported. The maximum output power is 153 μW, and the slope efficiency is 0.32%..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 973 (1998)
Get PDF
A Numerical Study of the Plasma Wake Wave
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The excitation of plasma wake wave and acceleration of electrons after interaction between a high intensity ultrashort laser and underdense plasma using a particle in cell simulation is numerically studied. The results show that wake waves can be excited after the interaction between the single frequency or beat wave l
The excitation of plasma wake wave and acceleration of electrons after interaction between a high intensity ultrashort laser and underdense plasma using a particle in cell simulation is numerically studied. The results show that wake waves can be excited after the interaction between the single frequency or beat wave laser and underdense plasma, but the wake wave has larger strength and longer wavelength, then it can more efficiently accelerate electrons..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1003 (1998)
Get PDF
Study of an Intracavity Laser Absorption Spectrometry Incorporated with the Fourier Transform Spectrometry
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper describes the experimental setup of a Fourier transform intracavity laser absorption spectrometer (FT ICLAS). The advantages of the spectrometer over the traditional ICLAS grating spectrometer are also discussed.
This paper describes the experimental setup of a Fourier transform intracavity laser absorption spectrometer (FT ICLAS). The advantages of the spectrometer over the traditional ICLAS grating spectrometer are also discussed..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1008 (1998)
Get PDF
Longitudinal Field Energy and Scalar Paraxial Approximation
[in Chinese], [in Chinese], and [in Chinese]
If only the first order correction to the scalar paraxial field is concerted, then the field can be expressed as =[ε x,0,ε z] and the longitudinal field energy E z is proved to be constantly independent of the position z of the beam cross section. The value of E z stands for the degree of scalar paraxial approximation.
If only the first order correction to the scalar paraxial field is concerted, then the field can be expressed as =[ε x,0,ε z] and the longitudinal field energy E z is proved to be constantly independent of the position z of the beam cross section. The value of E z stands for the degree of scalar paraxial approximation. An approximation factor η is suggested to characterize this property. The larger η, the worse degree of the approximation. Results are applied to super Gaussian beams..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1013 (1998)
Get PDF
Theoretical Analysis of the Self mixing Interference in Laser Diode
[in Chinese], [in Chinese], and [in Chinese]
The asymmetry of the signal is one important character of the self mixing interference effect, which leads to the possibility of directional discrimination in the Doppler velocity measurment or displacement measurment. Theoretical models are given by using a two mirror cavity model, which explains the asymmetry of the
The asymmetry of the signal is one important character of the self mixing interference effect, which leads to the possibility of directional discrimination in the Doppler velocity measurment or displacement measurment. Theoretical models are given by using a two mirror cavity model, which explains the asymmetry of the self mixing interference signal successfully. Simulation results are given which are consistent with the experimental ones..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1018 (1998)
Get PDF
Study on Emissions from Localized Excitons in Ⅱ-Ⅵ Multiple Quantum Wells
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
In this paper, the effects of density of localized exciton states on stimulated emission processes have been reported. In our experiments, two samples of Zn x Cd 1-x Te ZnTe mutiple quantum wells which with different concentration are employed, and the stimulated emissions from the localizid states are observed in each
In this paper, the effects of density of localized exciton states on stimulated emission processes have been reported. In our experiments, two samples of Zn x Cd 1-x Te ZnTe mutiple quantum wells which with different concentration are employed, and the stimulated emissions from the localizid states are observed in each of them. The density of localized exciton states in Zn 0.67 Cd 0.33 Te ZnTe MQWs is much greater than that in Zn 0.78 Cd 0.22 Te-ZnTe MQWs. The stimulated emission processes was found to be an exciton-ecciton scattering processes, but it was not found in Zn 0.78 Cd 0.22 Te-ZnTe MQWs. It seems to be very important for localized exciton to create stimulated emissions, but too high density of localized exciton states may greatly affect the stimulated emissions..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1023 (1998)
Get PDF
Reactivity Photoacoustic Spectrum of Graphite Ablated Repetitively by a Pulsed Laser
[in Chinese], [in Chinese], and [in Chinese]
A graphite target was ablated repetitively by a pulsed Nd:YAG laser. At the constant laser energy, laser photoacoustic strength decreases with the increase of the repetitive times, which indicates that the ablation caused hole plays an inhibitive role in the reduction of flows of energy and of the mass from the sample.
A graphite target was ablated repetitively by a pulsed Nd:YAG laser. At the constant laser energy, laser photoacoustic strength decreases with the increase of the repetitive times, which indicates that the ablation caused hole plays an inhibitive role in the reduction of flows of energy and of the mass from the sample..
showLess
Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 25, Issue 11, 1028 (1998)
Get PDF
View Cover
X
Email Alert
Submit a Paper
Research Article
Holography and Information Processing
Laser Manufacturing
Laser Physics