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Journals >
Chinese Journal of Lasers
Contents
1993
Volume: 20 Issue 4
20 Article(s)
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Research Article
Distribution of electric field in waveguide covered with planar electrodes
[in Chinese], and [in Chinese]
This paper presents two theoritical methods for calculating the distribution of electric field in the waveguide covered with planar electrodes. The numerical results are also given, and the two methods are compared.
This paper presents two theoritical methods for calculating the distribution of electric field in the waveguide covered with planar electrodes. The numerical results are also given, and the two methods are compared..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 268 (1993)
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Data processing of CO
2
laser power density distribution measurement
[in Chinese]
In References [1], we have presented a method to measure the power density distribution of continuous output high power laser by using a moving slit. However, only with the proper experimental conclusion. In this paper, we introduce the experimental data processing process by using the computer graphic processing techn
In References [1], we have presented a method to measure the power density distribution of continuous output high power laser by using a moving slit. However, only with the proper experimental conclusion. In this paper, we introduce the experimental data processing process by using the computer graphic processing technique on an experimental collected light spot..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 273 (1993)
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Laser and fluorescence properties of novel infrared laser dyes
[in Chinese], [in Chinese], and [in Chinese]
This paper reports that some novel infrared laser dyes with tuning wavelength from 670.0 nm to 910.0 nm was pumped by N2 laser, and was made on laser properties, spectrum of fluorescence, fluorescence quantum efficiency and fluorescence lifetime was investigated. The fluorescence quantum efficiency was measured by opto
This paper reports that some novel infrared laser dyes with tuning wavelength from 670.0 nm to 910.0 nm was pumped by N2 laser, and was made on laser properties, spectrum of fluorescence, fluorescence quantum efficiency and fluorescence lifetime was investigated. The fluorescence quantum efficiency was measured by opto-acoustic spectroscopy..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 309 (1993)
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Study on coumarin derivative lasing dyes
[in Chinese], and [in Chinese]
Four coumarin derivative lasing dyes have been synthesized and the lasing properties of these dyes were determined. Two dyes containing trifluoromethyl group have good perparties with proctical application prospect.
Four coumarin derivative lasing dyes have been synthesized and the lasing properties of these dyes were determined. Two dyes containing trifluoromethyl group have good perparties with proctical application prospect..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 312 (1993)
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[in Chinese]
[in Chinese], and [in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 314 (1993)
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Biomedical Photonics and Laser Medicine
Study on Effect of He-Ne Laser Pulse Anthralin on Rabbits Skin
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This research shows that He-Ne laser plus anthralin has a distinct effect on proliferating the number of blood vessels and folliclis of rabbit's skin, and the growth of hair was very fast. This result has provided the basis for the clinical practice.
This research shows that He-Ne laser plus anthralin has a distinct effect on proliferating the number of blood vessels and folliclis of rabbit's skin, and the growth of hair was very fast. This result has provided the basis for the clinical practice..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 318 (1993)
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Laser Manufacturing
Rainbow achromatic image holography of strip-distribution generated by grating
[in Chinese], and [in Chinese]
Rainbow achromatic image holography of multi-slitlike strip distribution generated by grating is proposed, and the achromatic condition is also discussed. Experimental results are presented which coincide with the analysis.
Rainbow achromatic image holography of multi-slitlike strip distribution generated by grating is proposed, and the achromatic condition is also discussed. Experimental results are presented which coincide with the analysis..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 301 (1993)
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Accuracy of coherent measurement of particle diameter
[in Chinese], and [in Chinese]
In this paper, the influences of spatial resolution of TV camera, digital filtering and defocusing on measured accuracy of diameter of a particle are studied by using digital analytical method under coherent illumination. A simple method of focusing recognition is presented. Finally, the experimental results are given
In this paper, the influences of spatial resolution of TV camera, digital filtering and defocusing on measured accuracy of diameter of a particle are studied by using digital analytical method under coherent illumination. A simple method of focusing recognition is presented. Finally, the experimental results are given and found to be consistent with the theoretical analysis..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 304 (1993)
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Laser Physics
Advantages of a new configuration of dye laser oscillator
[in Chinese], and [in Chinese]
A new configuration of dye laser oscillator is presented in this paper. The background of amplified spontaneous emission (ASE) in laser output is fully restrained in this configuration. A quasi-ring oscillator is used and high efficiency of laser output can be achieved.
A new configuration of dye laser oscillator is presented in this paper. The background of amplified spontaneous emission (ASE) in laser output is fully restrained in this configuration. A quasi-ring oscillator is used and high efficiency of laser output can be achieved..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 241 (1993)
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LD pumped Nd:YAG intracavity frequency doubled laser and its modes
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Using KTP crystal, LD pumped intracavity frequency doubled Nd:YAG laser has been developed. The CW green laser with linear polorization at 0.532μm has been obtained. The pumping threshold is 41 mW, the output power is 1.4 mW, the slope effeciency is 1.7%. The influence of the pumping light on transverse modes of the fr
Using KTP crystal, LD pumped intracavity frequency doubled Nd:YAG laser has been developed. The CW green laser with linear polorization at 0.532μm has been obtained. The pumping threshold is 41 mW, the output power is 1.4 mW, the slope effeciency is 1.7%. The influence of the pumping light on transverse modes of the frequency doubled laser is studied has been studed. The experimental method and results are reported briefly..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 247 (1993)
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Quantum-well laser diode pumped monolithic Nd:YLF laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A monolithic Nd:YLF laser was pumped by a multi-quantum-well laser diode arrary and the linear polorized light was obtained at 1.047 μm with a threshold of 6.8 mW and a slope efficiency of 24%. The maximum output energy reached 6.7 μJ. The peak power of 50 mW was achieved by a gain-switching. Theoretical analysis for t
A monolithic Nd:YLF laser was pumped by a multi-quantum-well laser diode arrary and the linear polorized light was obtained at 1.047 μm with a threshold of 6.8 mW and a slope efficiency of 24%. The maximum output energy reached 6.7 μJ. The peak power of 50 mW was achieved by a gain-switching. Theoretical analysis for the threshold, the slope efficiency and the gain-switching of the solid laser pumped by a laser diode was presented..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 251 (1993)
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Studies on rate equation of erbium-doped fiber amplifiers
[in Chinese], [in Chinese], and [in Chinese]
After introducing the overlapping factors between the (pump and signal) light intensities and the erbium dopant distributions inside the fiber core, analytical solutions have been derived for rate equations appropriate to 1.48μm pumped erbium-doped amplifiers. Using the deduced expressions, important features character
After introducing the overlapping factors between the (pump and signal) light intensities and the erbium dopant distributions inside the fiber core, analytical solutions have been derived for rate equations appropriate to 1.48μm pumped erbium-doped amplifiers. Using the deduced expressions, important features characterizing the amplifiers have been analysed and discussed..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 256 (1993)
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A study of NYAB self frequency-doubling laser pumped by laser diode
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A LD-pumped OF-coupled NYAB self-frequency-doubling laser has been developed, in which the pumping laser beam from LD are focused into the NYAB crystal through a section of optical fiber. For the fundamental trasverse mode operation, the threshold pumping power is 14 mW and the output power of 0.531 μm green laser beam
A LD-pumped OF-coupled NYAB self-frequency-doubling laser has been developed, in which the pumping laser beam from LD are focused into the NYAB crystal through a section of optical fiber. For the fundamental trasverse mode operation, the threshold pumping power is 14 mW and the output power of 0.531 μm green laser beam is 3.6 mW with an efficiency of 3% and the degree of polarization larger than 99.8%..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 260 (1993)
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Lead-salt diode laser at 3~5 μm wavelength region
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A Pb0.97Cd0.03S0.9Se0.1diode laser with pulsed operation at up to a temperature of 162 K and a PbS0.53Se0.47 diode laser with CW operation at 28 K have been fabricated by a horizontal unseeded vapor growth technique, self diffusion and mesa stripe-geometry. Their emission wavelengths are 3.22 μm and 5.53 μm respectivel
A Pb0.97Cd0.03S0.9Se0.1diode laser with pulsed operation at up to a temperature of 162 K and a PbS0.53Se0.47 diode laser with CW operation at 28 K have been fabricated by a horizontal unseeded vapor growth technique, self diffusion and mesa stripe-geometry. Their emission wavelengths are 3.22 μm and 5.53 μm respectively. In pulsed operation and CW operation the threshold current density are as low as 143 A/cm2 and 41 A/cm2 at 12 K respectivety..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 264 (1993)
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Self-induced coherent light oscillations in KNbO
3
:Fe
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The experimental study of self- induced coherent light oscillations with photorefractive crystal KNbO3:Fe in a linear cavity are reported. For the transmission of the cavity P=0.28, the incident intensity dependence on the oscillating light intensities I'A, the phase conjugating light intensities IPC, the phase con
The experimental study of self- induced coherent light oscillations with photorefractive crystal KNbO3:Fe in a linear cavity are reported. For the transmission of the cavity P=0.28, the incident intensity dependence on the oscillating light intensities I'A, the phase conjugating light intensities IPC, the phase conjugation reflectivity Rc, the oscillating light build-up time constant τ0 and the phase conjugate light build-up time constant τc are measured respectively. For Ip=7.8 W/cm2, the maximum reflectivity Rc=1.6% and the maximum oscillating light intensity IA=2I′A=1.0 W/cm2 are obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 278 (1993)
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Self-pumped phase conjugation by backward stimulated two-wave mixing
[in Chinese], and [in Chinese]
We discuss the theory of self-pumped phase conjugation in a special case based on backward stimulated two-wave mixing in a photorefractive crystal. The frequency shift of the scattering wave is considered to be the result of the moving grating which arises from the photovoltaic effect in photorefractive poled crystal.
We discuss the theory of self-pumped phase conjugation in a special case based on backward stimulated two-wave mixing in a photorefractive crystal. The frequency shift of the scattering wave is considered to be the result of the moving grating which arises from the photovoltaic effect in photorefractive poled crystal..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 282 (1993)
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Transverse effects in absorption thermooptic bistability in CdS films
[in Chinese]
Thermo-optic bistability at room temperature has been obtained in CdS films (thinckness 1~3 μm) excited by Ar+-laser (A=514.5 nm). The transverse effects and on/off waves was recorded in the thermo-optic bistability. Different behaviours of CdS crystals for the thermo-optic bistability and the thermo-optic breakdown wa
Thermo-optic bistability at room temperature has been obtained in CdS films (thinckness 1~3 μm) excited by Ar+-laser (A=514.5 nm). The transverse effects and on/off waves was recorded in the thermo-optic bistability. Different behaviours of CdS crystals for the thermo-optic bistability and the thermo-optic breakdown was investigated. Minimum distance (200 μm) between the OB elements that works separately has been calculated..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 285 (1993)
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Calculation of “pure atomic” relaxation and population of Li-like Al ions
[in Chinese], [in Chinese], and [in Chinese]
With the C- R model, on the condition of given plasma parameters, we calculated the "pure atomic" relaxation and population of Li- like Al ions. The necessary atomic parameters, such as energy levels, wavelengths, oscillating intensities and the probabilities of transitions were calculated with H-F method.
With the C- R model, on the condition of given plasma parameters, we calculated the "pure atomic" relaxation and population of Li- like Al ions. The necessary atomic parameters, such as energy levels, wavelengths, oscillating intensities and the probabilities of transitions were calculated with H-F method..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 291 (1993)
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Stimulated Raman scattering and four-wave mixing in a hollow optical fiber filled with the mixture of carbon tetrachloride and phenylethanol
[in Chinese], [in Chinese], and [in Chinese]
Stimulated Raman scattering (SRS) and four-wave mixing (FWM) in a hollow optical fiber filled with the mixture of carbon tetrachloride and phenylethanol pumped by the frequency-doubling of a Q-switched YAG laser (λ=532. 1nm) have been observed. The frequencies of the SRS and FWM lines have been specified and the theore
Stimulated Raman scattering (SRS) and four-wave mixing (FWM) in a hollow optical fiber filled with the mixture of carbon tetrachloride and phenylethanol pumped by the frequency-doubling of a Q-switched YAG laser (λ=532. 1nm) have been observed. The frequencies of the SRS and FWM lines have been specified and the theoretical imterpretations have also been given to a certain extent..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 296 (1993)
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Manufacture of Au-substrate and study of SERS on Co(Ⅱ)TsPc/Au system
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
A new method of manufacturing SERS active Au substrate is described and the SERS effect on Co(Ⅱ)TsPc/Au interface is studied experimentally for the first time.
A new method of manufacturing SERS active Au substrate is described and the SERS effect on Co(Ⅱ)TsPc/Au interface is studied experimentally for the first time..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 20, Issue 4, 315 (1993)
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