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Chinese Journal of Lasers
Contents
1997
Volume: 24 Issue 1
22 Article(s)
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Research Article
Optical Power Limiting of Fullerenes
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The optical power limiting of the exited state absorption in Fullerenes solution has been studied based on a time-resolved technique. In our experiment the switching speed of the optical power limiting is about 5 ns.
The optical power limiting of the exited state absorption in Fullerenes solution has been studied based on a time-resolved technique. In our experiment the switching speed of the optical power limiting is about 5 ns..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 27 (1997)
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CuBr Laser Applied in a Remote Laser Gated Projection System
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Basing on the small CuBr vapor lasers, a remote laser gated projection system is developed. Gated projection imaging of a remote object has been achieved. The brightness and clearness of the image are satisfactory. The typical characteristics of such a system are presented.
Basing on the small CuBr vapor lasers, a remote laser gated projection system is developed. Gated projection imaging of a remote object has been achieved. The brightness and clearness of the image are satisfactory. The typical characteristics of such a system are presented..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 31 (1997)
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Ion Beam Etching of Binary Optics Microlens Arrays and the Test of Diffraction Efficiency
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A binary optics microlens array (BM) was fabricated by using ion beam teching. The real-time test of etching depth in vacuum enviroment was performed. A noval method of measuring the BM diffraction efficiency was presented.
A binary optics microlens array (BM) was fabricated by using ion beam teching. The real-time test of etching depth in vacuum enviroment was performed. A noval method of measuring the BM diffraction efficiency was presented..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 35 (1997)
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Experimental Investigation of a tunable liquid-Crystal-Etalon Filter
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper describes the experimental study of a tunable liquid-crystal-etalon filter. The liquid crystal Fabry-Perot optical filter was developed that has narrow bandwidth (0.3~0.5 nm), high fineness (100~200) and a large continuously tunable range (>70 nm).
This paper describes the experimental study of a tunable liquid-crystal-etalon filter. The liquid crystal Fabry-Perot optical filter was developed that has narrow bandwidth (0.3~0.5 nm), high fineness (100~200) and a large continuously tunable range (>70 nm)..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 41 (1997)
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Holography and Information Processing
Measurement of 2-D Instantaneous Vibration Mode Shapes with a Polarized Multichannel
[in Chinese]
A polarized multichannel camera used for measuring of 2-D instantaneous vibration mode shapes is presented. The whole-field information of 2-D instantaneous vibration mode shapes at all phases of a vibration object can be recorded simultaneously on one specklegram in one step.
A polarized multichannel camera used for measuring of 2-D instantaneous vibration mode shapes is presented. The whole-field information of 2-D instantaneous vibration mode shapes at all phases of a vibration object can be recorded simultaneously on one specklegram in one step..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 68 (1997)
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Experimental Observation of the Dynamic Behavior of an Optical Neural Network
[in Chinese]
The dynamic behavior of an optical neural network has been studied. The experimental results are presented and the effect of system parameters on the dynamics is discussed.
The dynamic behavior of an optical neural network has been studied. The experimental results are presented and the effect of system parameters on the dynamics is discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 71 (1997)
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A Simple Method to Enhance Temperature Sensitivity of Fiber Bragg Gratings
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A Simple method for enhancing fiber grating temperature sensitivity using an aluminum tube or aluminum plate packaging is presented. Bragg wavelength shift of about 0.038 nm/℃ was measured for fiber gratings at 1550 nm within 0 ℃ to 120 ℃. This represents an improvement in temperature sensitivity that is more than 3 ti
A Simple method for enhancing fiber grating temperature sensitivity using an aluminum tube or aluminum plate packaging is presented. Bragg wavelength shift of about 0.038 nm/℃ was measured for fiber gratings at 1550 nm within 0 ℃ to 120 ℃. This represents an improvement in temperature sensitivity that is more than 3 times than that could be achieved with a bare fiber grating..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 75 (1997)
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Laser Manufacturing
Laser Cladding of NiCrBSi Alloy on the 45 Steel
[in Chinese], [in Chinese], and [in Chinese]
Laser cladding of NiCrBSi alloy coating on the 45 steel has been performed with a 2 kW CO2 laser. The result shows that with TEM and X-ray diffraction the phases are similar in the whole fusing region of the laser cladding. But in the transition layer the phase are different from those of the fusing region.
Laser cladding of NiCrBSi alloy coating on the 45 steel has been performed with a 2 kW CO2 laser. The result shows that with TEM and X-ray diffraction the phases are similar in the whole fusing region of the laser cladding. But in the transition layer the phase are different from those of the fusing region..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 78 (1997)
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Research on the Dynamics of Formation of Nanometer-size Materials by Excimer Laser Ablation
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
In this paper we analyse the dynamics of formation of ananometer-size materials by excimer laser ablation. Starting from the temperature field of the materials and taking Al and Cu as ablation examples, the processes of the production of the nanometer-size materials are researched.
In this paper we analyse the dynamics of formation of ananometer-size materials by excimer laser ablation. Starting from the temperature field of the materials and taking Al and Cu as ablation examples, the processes of the production of the nanometer-size materials are researched..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 83 (1997)
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Laser Strengthening of Railway Car Parts-Bogie Plates
[in Chinese], [in Chinese], and [in Chinese]
As the development of railway technologies is oriented to high speed and heavy haul, it is required to upgrade the performance of car parts as well as their manufacturing process. This paper tries to explain through wear plate as an illustrative example that laser strengthening is among the essential substrtitutes for
As the development of railway technologies is oriented to high speed and heavy haul, it is required to upgrade the performance of car parts as well as their manufacturing process. This paper tries to explain through wear plate as an illustrative example that laser strengthening is among the essential substrtitutes for traditional production process..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 87 (1997)
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The Influences of Irradiation of Excimer Laser and an Ultraviolet Beam On Immunogenecity of Pancreatic Islet
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
After the pretreatment of neonatal rat islet-like cell clusters (ICCs) with irradiation of an excimer laser and an ultraviolet beam (UVB), the immunogenecity of islet was significantly reduced, especially in the excimer laser group. Morphological examination of the pretreated islets revealed that the secretory granules
After the pretreatment of neonatal rat islet-like cell clusters (ICCs) with irradiation of an excimer laser and an ultraviolet beam (UVB), the immunogenecity of islet was significantly reduced, especially in the excimer laser group. Morphological examination of the pretreated islets revealed that the secretory granules and subcellular structures remained intact, and the insulin secretion function of the pretreated islets showed no significant difference with that of the control group. The islet allotransplantation in STZ-induced diabetes rats indicated that the diabetes remission period of the rats of the excimer laser group was significantly longer than that of the UVB group and the control group..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 91 (1997)
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Laser Physics
Analysis of Design and Output Properties of a Unstable Ring Resonator with 90° Beam Rotation
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A design method of system parameters of unstable ring resonators with 90° beam rotation is discussed in this paper, and an effective method of allgment of the resonator is also gaven. Good output far-field intensity distributions of the UR90 resonator with the magnification M=1.21 and 1.3 are observed in the coppe
A design method of system parameters of unstable ring resonators with 90° beam rotation is discussed in this paper, and an effective method of allgment of the resonator is also gaven. Good output far-field intensity distributions of the UR90 resonator with the magnification M=1.21 and 1.3 are observed in the copper vapor laser. The reverse mode is successfully suppressed on the UR90 resonator while the polarization state of the reverse mode remains by a reinjection system..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 1 (1997)
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High Efficiency CW single Frequency Ring Ti:Sapphire Laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
We report a high efficiency CW single frequency ring Ti:sapphire laser pumped by an argon ion laser. By 5.0 W pumping, more than 0.5 W stable single frequency output is attained. The conversion efficiency is over 10%. The characteristics of the intracavity frequency-control elements, the optical unidirectional device,
We report a high efficiency CW single frequency ring Ti:sapphire laser pumped by an argon ion laser. By 5.0 W pumping, more than 0.5 W stable single frequency output is attained. The conversion efficiency is over 10%. The characteristics of the intracavity frequency-control elements, the optical unidirectional device, the birefringent filter, and the etalons, are analyzed. The optimum pumping is discussed by considering the thermal effect produced by the Ti:sapphire. Also, the tuning range, the linewidth, and the output stability of the laser are measured..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 9 (1997)
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Experimental Study of the (Nd,Ce):YAG Slab Laser Using an Axis—asymmetric Positive Confocal Resonator with a lD Variable Reflectivity Mirror
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
An axis-asymmetric positive confocal resonator with a one-dimensional variable reflectivity mirror (1D VRM) for the (Nd,Ce):YAG slab laser is proposed and compared experimentally with the plane-plane resonator and the positive confocal resonator with a rotationally-symmetrical variable reflectivity mirror (2D VRM). It
An axis-asymmetric positive confocal resonator with a one-dimensional variable reflectivity mirror (1D VRM) for the (Nd,Ce):YAG slab laser is proposed and compared experimentally with the plane-plane resonator and the positive confocal resonator with a rotationally-symmetrical variable reflectivity mirror (2D VRM). It has been shown that the 1D VRM positive confocal resonator is suitable for slab lasers because both output efficiency and beam quality can be improved..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 13 (1997)
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Dual Wavelength output of Gold Vapor Laser
[in Chinese], and [in Chinese]
An investigation was made of pulse stimulated emission at two wavelengths 627.8 nm and 312.2 nm from a gold vapor alser with a discharge tube of 980 mm long and the internal diameter 28 mm. The experimental points for the laser emission of the red and UV lights were obtained at the same time, using a specific resonator
An investigation was made of pulse stimulated emission at two wavelengths 627.8 nm and 312.2 nm from a gold vapor alser with a discharge tube of 980 mm long and the internal diameter 28 mm. The experimental points for the laser emission of the red and UV lights were obtained at the same time, using a specific resonator containing a mirror with high reflectivities at 627.8 nm and 312.2 nm, at a repetition rate of 8 kHz. When the average output power at 627.8 nm was 2.3 W, the average output power at 312.2 nm was 300 mW. The 28 mm diameter red and UV output beams have a divergence of 3 mrad..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 17 (1997)
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Study of Characteristics of Transverse Pulse Discharge S
2
Laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Characteristics of a transverse pulse discharge S2 laser have been studied. Influence of parameters of the S2 laser on the dischage current, such as plasma-tube temperature, dischage voltage, the ratio of Cs to Cp, and preionization has been presented and analysed.
Characteristics of a transverse pulse discharge S2 laser have been studied. Influence of parameters of the S2 laser on the dischage current, such as plasma-tube temperature, dischage voltage, the ratio of Cs to Cp, and preionization has been presented and analysed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 21 (1997)
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The Effect of the Non-Symmetrical Blumlein Circuit on Sr
+
Recombination Laser
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A non-symmetrical Blumlein circuit was used in a pulsed discharge Sr+ recombination laser for the first time. The discharge current with a fast trailing edge and without ringing has been realized. The maxmum laser average power up to 524 mW was obtained.
A non-symmetrical Blumlein circuit was used in a pulsed discharge Sr+ recombination laser for the first time. The discharge current with a fast trailing edge and without ringing has been realized. The maxmum laser average power up to 524 mW was obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 25 (1997)
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Two-Cell Stimulated-Brillouin-Scattering Systems Pumped with Narrow-Pulse-Width Laser
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The pumping laser pulse of narrow pulse-width together with its leading edge shape as well as parameters of the two-cell stimulated-Brillouin-scattering (SBS) systems have an influence on the SBS pulse intensity and conversion efficiency. Two narrow pulses with different leading edges pump the two-cell systems simultan
The pumping laser pulse of narrow pulse-width together with its leading edge shape as well as parameters of the two-cell stimulated-Brillouin-scattering (SBS) systems have an influence on the SBS pulse intensity and conversion efficiency. Two narrow pulses with different leading edges pump the two-cell systems simultaneouly. Bu changing the amplifier-cell length and the focal length, different conversion efficiencyies were observed. The two SBS pulses results are analyzed with transient seeded Stockes in the amplifier-cell. A method to design the two-cell systems is proposed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 46 (1997)
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The one-dimension-short-range-potential model of high order harmonic generation
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
By solving the one dimension short range time dependent Schrodinger equation, the ionization probability, population of bound states and harmonic spectra of atom under different laser intensities are studied. It shows that the ionization of atom is good for harmonic generation. Harmonic emission is generated from the j
By solving the one dimension short range time dependent Schrodinger equation, the ionization probability, population of bound states and harmonic spectra of atom under different laser intensities are studied. It shows that the ionization of atom is good for harmonic generation. Harmonic emission is generated from the jump of electrons from continum states to the ground state, both the ionization and population are oscillating, but with different directions..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 51 (1997)
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Comparing of Propagation Characteristics between the Linearly Polarized Bessel-Gauss Beam and the Azimuthally Polar~ed Bessel-Gauss Beam
[in Chinese], [in Chinese], and [in Chinese]
Wilh Collins diffraction integral formula in the paraxial approximation, the analytical expressions for the linearly polarized Bcssel-Gauss beam and the azimuthally polarized Bessel-Gauss beam through any axisymmetrie optical system that can be described by an ABCD ray transfer matrix are giyen in this paper. For examp
Wilh Collins diffraction integral formula in the paraxial approximation, the analytical expressions for the linearly polarized Bcssel-Gauss beam and the azimuthally polarized Bessel-Gauss beam through any axisymmetrie optical system that can be described by an ABCD ray transfer matrix are giyen in this paper. For example, the propagation characteristics of these two kinds of Bessel—Gauss beams through an optical system with a lens are compared by a numerical calculation. And the results are also analyzed and discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 55 (1997)
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KTP Singly Resonant Optical Parametric Oscillator Pumped by a Pulsed Laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Experimental results of KTP OPO pumped by the second harmonic of a Q-switched Nd:YAG laser are reported, output in the range of 1203~1399 nm of SRO is obtained experimentally, and the maximum energy conversion efficiency is 36%. The sum frequency generation of the parametric light and the 1064 nm is studied experimenta
Experimental results of KTP OPO pumped by the second harmonic of a Q-switched Nd:YAG laser are reported, output in the range of 1203~1399 nm of SRO is obtained experimentally, and the maximum energy conversion efficiency is 36%. The sum frequency generation of the parametric light and the 1064 nm is studied experimentally, and a visible output in the range of 568~592 nm is obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 59 (1997)
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A New Anisotropic Conical Scattering
[in Chinese], and [in Chinese]
A new type of anisotropic scattering rings and the isotropic scattering oscillation are observed on a screen behind a Cu:KNSBN crystal pumped by an extraordinary beam. The latter plays a key role in the forming of the former.
A new type of anisotropic scattering rings and the isotropic scattering oscillation are observed on a screen behind a Cu:KNSBN crystal pumped by an extraordinary beam. The latter plays a key role in the forming of the former..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 24, Issue 1, 63 (1997)
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