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Journals >
Chinese Journal of Lasers
Contents
1995
Volume: 22 Issue 7
18 Article(s)
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Research Article
Generation of 3 kV Picoseconds Shock-wave Pulses
[in Chinese], [in Chinese], and [in Chinese]
A nonlinear transmission line (NLTL) has been novelly used to speed up the rise time of high voltage (3 kV) pulses generated from a GaAs photoconductive switch. A 3 kV shock-wave pulse with rise time less than 400 ps has been obtained. The shock-wave theory of the NLTL is reviewed and practical implementations and limi
A nonlinear transmission line (NLTL) has been novelly used to speed up the rise time of high voltage (3 kV) pulses generated from a GaAs photoconductive switch. A 3 kV shock-wave pulse with rise time less than 400 ps has been obtained. The shock-wave theory of the NLTL is reviewed and practical implementations and limitations are introduced and discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 497 (1995)
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A Multi-path F-P Interferometric System and Its Application in Three-dimensional Refractive Index Field
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A multi-path F-P interferometric system is designed which is used to obtain the multidirectional interferograms of a three-dimensional refractive index field by the computer simulation. The results show that if the sine reconstructed algorithm is used to reconstruct the-three-dimensional refractive index field, a preci
A multi-path F-P interferometric system is designed which is used to obtain the multidirectional interferograms of a three-dimensional refractive index field by the computer simulation. The results show that if the sine reconstructed algorithm is used to reconstruct the-three-dimensional refractive index field, a precision of 2. 24 per cent can be reached with 6 F-P interferograms. As an example of application, this system is used to obtain multidirectional interferograms of a three-peak temperature field. The distribution of the three-dimensional refractive index is reconstructed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 501 (1995)
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NFOM and the Study of Fish Scale Plates
[in Chinese], [in Chinese], and [in Chinese]
The theory of Near Field Optical Microscopy (NFOM) is reviewed. A real system is presented with which the fish scale sample is imaged and analyzed. The results show that NFOM can be applied to study transparent and semi- transparent materials,especially, for living materials. Bioelectret properties caused by orderly or
The theory of Near Field Optical Microscopy (NFOM) is reviewed. A real system is presented with which the fish scale sample is imaged and analyzed. The results show that NFOM can be applied to study transparent and semi- transparent materials,especially, for living materials. Bioelectret properties caused by orderly orientational arrangement of collagen molecules is proved. By NFOM the bioholographic phenomenon is observed for the first time in μm-sized fish scale plates..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 506 (1995)
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10.6 μm Ge-Ag-Ni Hollow Waveguides with Small Cross-sectional Radii
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The bending loss in Ge-Ag-Ni waveguide as a function of waveguide radius is disscussed. The advantages of the small-sectional radius waveguide are discribed, and a novel method of RF sputterins for fabrication of hollow waveguides with small diameters is proposed. Finally, some samples have been fabricated using the me
The bending loss in Ge-Ag-Ni waveguide as a function of waveguide radius is disscussed. The advantages of the small-sectional radius waveguide are discribed, and a novel method of RF sputterins for fabrication of hollow waveguides with small diameters is proposed. Finally, some samples have been fabricated using the method and the transmitunces of the samples with different waveguide diameters are presented and compared..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 511 (1995)
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Biomedical Photonics and Laser Medicine
Experimental Study on Excimer Laser Ablation of Prostates of Rabbits
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
It is reported for the first times that prostate samples of rabbits are irradiated by a Xecl excimer laser (308nm).The ablation effects of the prostates of the rabbits are observed with different laser pulse repetition rates and two lasing media. The damase threshold of 400 mJ/ cm2 is measured. It is shown that the exc
It is reported for the first times that prostate samples of rabbits are irradiated by a Xecl excimer laser (308nm).The ablation effects of the prostates of the rabbits are observed with different laser pulse repetition rates and two lasing media. The damase threshold of 400 mJ/ cm2 is measured. It is shown that the excimer laser has the characteristics of good ablation effect, light damage for surrounding tissues and easy control,thus presenting a practical clinical value..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 556 (1995)
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Holography and Information Processing
Optimization of Writing Power of Magneto-optical Disks at Different Ambient Temperatures
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
With a finite-element method, the relationships among ambient temperature and writing power, as well as the temperature distribution in the mangeto-optical(MO) film are discussed. On the basis of a numerical analysis, the optimum recording condition adapted for different ambient temperatures is derived. Also,the analys
With a finite-element method, the relationships among ambient temperature and writing power, as well as the temperature distribution in the mangeto-optical(MO) film are discussed. On the basis of a numerical analysis, the optimum recording condition adapted for different ambient temperatures is derived. Also,the analysis presents an access for optimizing the readout characteristics of MO disks at different ambient temperatures..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 537 (1995)
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Computer-aid从理论上和实验上研究了光学广义载波条纹图形成的机理及其数字解调技术,同时还给出了光学调制广义载波条纹的实验技术。利用计算机仿真的广义载波条纹图以及实验获得广义载波条纹图的数字解调结果与理论分析的结果一致。ed Analysis of Optical Generalised-carrier Fringe Patterns
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The formation mechanism of optical generalized-carrier fringes and the digital demodulation technique are investigated theoretically and experimentally. An optical technique for modulating generalised-carrier fringe patterns is described. The results of digital demodulation with computer simulation and experiments show
The formation mechanism of optical generalized-carrier fringes and the digital demodulation technique are investigated theoretically and experimentally. An optical technique for modulating generalised-carrier fringe patterns is described. The results of digital demodulation with computer simulation and experiments show good agreement with a theoretical analysis..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 541 (1995)
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The Implement of Four-function Interchange Nodes Based on an Optical Crossover Switching Network
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A new kind of electrical addressed four-function multiple quantum wells (MQW) interchange nodes based on an optical crossover switching network has been proposed. Using two arrays of 1 × & MQW asymmetric Fabry-Perot reflection modulators, four pairs of interchange nodes are set up, and the first stage of the o
A new kind of electrical addressed four-function multiple quantum wells (MQW) interchange nodes based on an optical crossover switching network has been proposed. Using two arrays of 1 × & MQW asymmetric Fabry-Perot reflection modulators, four pairs of interchange nodes are set up, and the first stage of the optical crossover switching network (N=8) is realized..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 546 (1995)
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Scanning Tunneling Microscopy Studies of Organic Films in Optical Recording
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
In this paper, scanning tunneling microscopy (STM) is used to investigate the microstructure of organic films in optical recording. Bubbles are found for phthalocyanine thin films after laser irradiation. Laser pulses of different energies produce bubbles of various minute structures. The disc performance closely corre
In this paper, scanning tunneling microscopy (STM) is used to investigate the microstructure of organic films in optical recording. Bubbles are found for phthalocyanine thin films after laser irradiation. Laser pulses of different energies produce bubbles of various minute structures. The disc performance closely correlates with the sizes of the bubbles. It is demonstrated that STM is a powerful tool to investigate the microstructure of the optical disc..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 551 (1995)
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Laser Physics
Numerical Simulation the Experimental Study on a High Power Quasi-CW Ti:sapphire Laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A Ti:sapphire laser pumpedby a internal frequency-doubled acouto-optic Qswitched Nd:YAG laser has been designed. The maximum output achieved is 7.71 W. The conversion effidency of 33% at 7.4 W has been obtained. And, by numerical simulatioll, we have studied the operational characteristics of the Ti:sapphire laser. The
A Ti:sapphire laser pumpedby a internal frequency-doubled acouto-optic Qswitched Nd:YAG laser has been designed. The maximum output achieved is 7.71 W. The conversion effidency of 33% at 7.4 W has been obtained. And, by numerical simulatioll, we have studied the operational characteristics of the Ti:sapphire laser. The results of the numerical calculation accord with the experimentul results..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 481 (1995)
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Study of the Erbium-doped Fiber Amplifier Pumped by a 1477 nm Laser Diode
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Experimental results on erbium-doped fiber amplifiers (EDFA) pumped by a 1477 nm laser diode are reported. Gain and time characteristics of EDFA are investigated. A maximum gain of 23 dB has been obtained at 1520 nm, with pump efficiency being ~2.28 dB/mW.
Experimental results on erbium-doped fiber amplifiers (EDFA) pumped by a 1477 nm laser diode are reported. Gain and time characteristics of EDFA are investigated. A maximum gain of 23 dB has been obtained at 1520 nm, with pump efficiency being ~2.28 dB/mW..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 485 (1995)
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A Flashlamp Pumped Cr:LiSAF Tunable Laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A domotical flathlamp-pumped Cr:LiSAF tunable laser is reported for the first time. An output of 420 mJ, slope efficiency of 1.26%, and a tuning range from 786~934 nm are obtained. The experimental results are disscused as well.
A domotical flathlamp-pumped Cr:LiSAF tunable laser is reported for the first time. An output of 420 mJ, slope efficiency of 1.26%, and a tuning range from 786~934 nm are obtained. The experimental results are disscused as well..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 490 (1995)
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Analysis of the Output Laser Beam of a Variable Reflectivity Mirror Resonator
[in Chinese], and [in Chinese]
The beam width W(z) of a ouput laser beam from a variable reflectivity mirror resonator has been derived and analysed.
The beam width W(z) of a ouput laser beam from a variable reflectivity mirror resonator has been derived and analysed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 493 (1995)
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Analysis of the Equilibrium State of a Three-level Avalanche Upconversion System
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Properties of a three-level avalanche upconversion system are investigated using a rate equation analysis of the equilibrium state.
Properties of a three-level avalanche upconversion system are investigated using a rate equation analysis of the equilibrium state..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 516 (1995)
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Competition Between Amplified Spontaneous Emission and Parametric Four-wave Mixing in Barium Vapor
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The amplified spontaneous emission (ASE) and parametric four-wave-mixing (PFWM) in barium vapor are studied under the experimental conditions of two-photon resonance. The mechanisms responsible for this competition can be attributed to the destructive interference between ASE and PFWM.
The amplified spontaneous emission (ASE) and parametric four-wave-mixing (PFWM) in barium vapor are studied under the experimental conditions of two-photon resonance. The mechanisms responsible for this competition can be attributed to the destructive interference between ASE and PFWM..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 519 (1995)
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Paraxial Riemannian Geometrical Optics I. Theory
[in Chinese], [in Chinese], and [in Chinese]
In this paper, a differential geometrical method is employed to study the propagation properties of light beams. Starting from the curvature of 3- dimensional Riemannian manifold, a new complex space which can contain the information of both geometrical optics and wave optics is built.
In this paper, a differential geometrical method is employed to study the propagation properties of light beams. Starting from the curvature of 3- dimensional Riemannian manifold, a new complex space which can contain the information of both geometrical optics and wave optics is built..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 523 (1995)
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The Algebraic Iterative Method for the Solution of Axially-asymmetric Optical Resonators
[in Chinese], and [in Chinese]
An algebraic iterative method is developed to obtain the self-consistent solution of q-1 in an axially-asymmetric optical resonator with the help of the algebraic equations of the complex curvature tensor q-1 of an axially-asymmetric beam through the transformation of an optical system derived from the Tensor ABCD Law.
An algebraic iterative method is developed to obtain the self-consistent solution of q-1 in an axially-asymmetric optical resonator with the help of the algebraic equations of the complex curvature tensor q-1 of an axially-asymmetric beam through the transformation of an optical system derived from the Tensor ABCD Law..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 529 (1995)
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Investigation of Soft X-ray Radiation from a Compact-laser-produced Plasma
[in Chinese], and [in Chinese]
A compact-laser produced plasma soft X-ray source with pulse repetition rates up to 10 Hz is developed. Its reproducibility and stability are found to be better than ± 4. 5 %.Using a spectral diagnostic method, the soft X- ray radiation characteristics are investigated.
A compact-laser produced plasma soft X-ray source with pulse repetition rates up to 10 Hz is developed. Its reproducibility and stability are found to be better than ± 4. 5 %.Using a spectral diagnostic method, the soft X- ray radiation characteristics are investigated..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 22, Issue 7, 532 (1995)
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