Journals >Chinese Journal of Lasers
Contents
1992
Volume: 19 Issue 1
21 Article(s)
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Research Article
Two approaches for absolute distance interferometry by synthetic wavelengths of an infrared dual-line He-Ne laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
It is the key of absolute distance interferometry to establish a synthetic-wave measuring chain. This paper gives a general formula of synthetic-wavelength and a conventional measuring equation set for each stage of synthetic wave, and introduces two-stage synthetic hierarchy produced by 3.3922um and3.3912um dual-line It is the key of absolute distance interferometry to establish a synthetic-wave measuring chain. This paper gives a general formula of synthetic-wavelength and a conventional measuring equation set for each stage of synthetic wave, and introduces two-stage synthetic hierarchy produced by 3.3922um and3.3912um dual-line He-Ne laser, as well as the related experimental results. On the basis of the hieraehy, this paper puts forward two interference measuring approaches. The discussion and analysis show that these two interfering system can be suitable to measurement of distance ranging from several meters to 100 meters, with an accuracy better than 1×(10-6~10-7)..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 31 (1992)
Generation of width-variable high-voltage electrical pulses by means of picosecond laser
[in Chinese], [in Chinese], and [in Chinese]
We report here the generation of width-variable electrical pulses with suban-nosecond rise and fall time by means of two picosecond light pulses with a variable delay between them to drive two photo-conductive switches one after the other.We report here the generation of width-variable electrical pulses with suban-nosecond rise and fall time by means of two picosecond light pulses with a variable delay between them to drive two photo-conductive switches one after the other..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 38 (1992)
Linear composite plate compensator
[in Chinese], [in Chinese], and [in Chinese]
A composite'plate compensator, special composite retardation plate,is giver. By changing the vibration azimuth of entrance linear polarized light, the retardation of the compensator can also be changed with easy adjustment and high precision.A composite'plate compensator, special composite retardation plate,is giver. By changing the vibration azimuth of entrance linear polarized light, the retardation of the compensator can also be changed with easy adjustment and high precision..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 41 (1992)
Measurement of spatial energy distribution of laser beam by CCD matrix array
[in Chinese], and [in Chinese]
This paper reports three dimensional measurement of pulse laser field profiles by matrix CCD and the automatic test results are given by combining the matrix GCD camera with graphic processor, computer and printer.This paper reports three dimensional measurement of pulse laser field profiles by matrix CCD and the automatic test results are given by combining the matrix GCD camera with graphic processor, computer and printer..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 43 (1992)
[in Chinese]
[in Chinese]
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 71 (1992)
Optical properties and optimum design of soft X-ray multilayers
[in Chinese], [in Chinese], and [in Chinese]
The soft X-ray multilayer is usually composed of alternative materials of high and low atomic number. The optimum design of thickness for periodic quasiperiodic and non-perdic Al/Mo soft X-ray multilayers and the effects of roughness of surface, permeating of interface and thickness error on the reflectance of X-ray muThe soft X-ray multilayer is usually composed of alternative materials of high and low atomic number. The optimum design of thickness for periodic quasiperiodic and non-perdic Al/Mo soft X-ray multilayers and the effects of roughness of surface, permeating of interface and thickness error on the reflectance of X-ray multilayer are discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 74 (1992)
Holography and Information Processing
Optical differentiation by lensless Fourier transform holograms
[in Chinese]
This paper presents a, new method of optical second order differentiation by lensless Fourier transform hologram. Theoretical analysis and experiemental results are given.This paper presents a, new method of optical second order differentiation by lensless Fourier transform hologram. Theoretical analysis and experiemental results are given..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 67 (1992)
Laser Physics
Passively mode-locked Nd: YAG laser with a component GaAs
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
An all solid-state possively mode-locked Nd: YAG laser with a 400 um, (100) oriented GaAs component is reported for the first time and mode locked pulses with a duration of 16 ps, average energy of 10uJ were obtained with a probability of 90%.An all solid-state possively mode-locked Nd: YAG laser with a 400 um, (100) oriented GaAs component is reported for the first time and mode locked pulses with a duration of 16 ps, average energy of 10uJ were obtained with a probability of 90%..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 1 (1992)
Three diemenslonal temperature distribution in a finite solid-state laser slab
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper discusses thermal profile in a finite laser slab. Expressions of the temperature distribution are given under different pumping and cooling conditions. Computemzed calculations are carried out to give detailed explanation.This paper discusses thermal profile in a finite laser slab. Expressions of the temperature distribution are given under different pumping and cooling conditions. Computemzed calculations are carried out to give detailed explanation..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 5 (1992)
Picosecond optical pulse generation from a 1.3 μm InGaAsP laser with a multimode fiber extended resonator
[in Chinese], [in Chinese], [in Chinese], and [in Chinese]
18.1ps optical pulses were obtained from a 1.3 μm InGaAsP laser at 1 GHz repetition rate by a multimode fiber extended resonator and the experimental results are discussed.18.1ps optical pulses were obtained from a 1.3 μm InGaAsP laser at 1 GHz repetition rate by a multimode fiber extended resonator and the experimental results are discussed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 11 (1992)
Hybrid two-dimensional surface emitting semiconductor laser arrays
[in Chinese], and [in Chinese]
A novel two-dimensional surface emitting semiconductor laser arrays in quasi-continuous wave operating over 250mW at room temperature has been developed.A novel two-dimensional surface emitting semiconductor laser arrays in quasi-continuous wave operating over 250mW at room temperature has been developed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 16 (1992)
A high power 1079.5 nm Nd:YAlO3CW laser
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
On the basis of analysis and contrast for the stimulated emission cross section the fluorescent lifetime and optomechanical coefficient as well as the ability to resist the thermal stress, it is shown that similar to the Kd: Y3A15O12 crystal the Nd: YAlO3crystal is a useful material to develop high power CW solid stateOn the basis of analysis and contrast for the stimulated emission cross section the fluorescent lifetime and optomechanical coefficient as well as the ability to resist the thermal stress, it is shown that similar to the Kd: Y3A15O12 crystal the Nd: YAlO3crystal is a useful material to develop high power CW solid state lasers. 424W output power with an overall efficiency of 2.54% and a slope efficiency of 3.77% have been achieved from a 7 X155mm Nd:YABO3 rod..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 19 (1992)
Tapered wiggler technique used in Raman PEL of low energy electron beam
[in Chinese], and [in Chinese]
The expressions of extraction efficiency are deduced by means of ponderomo-tive potential, the actions of tapeied wiggler technique on efficiency enhancement lasers are analysed, and the experiment of FEL with tapered wiggler intensity of magnetic field has been conducted by this technique, the result indicates that itThe expressions of extraction efficiency are deduced by means of ponderomo-tive potential, the actions of tapeied wiggler technique on efficiency enhancement lasers are analysed, and the experiment of FEL with tapered wiggler intensity of magnetic field has been conducted by this technique, the result indicates that itsefficiency is 2.6 times that of FEL with constant wiggler intensity of magnetic field..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 22 (1992)
Research on radiators in high power CO2lasers
[in Chinese], and [in Chinese]
The radiator is an essential component in high power lasers. Researches show that the radiator made up of elliptical tubes with fins is the most suitable type among the existing multitudinous radiators. In accordance with the performance characteristics of the laser, the author also explains the design procedure of thiThe radiator is an essential component in high power lasers. Researches show that the radiator made up of elliptical tubes with fins is the most suitable type among the existing multitudinous radiators. In accordance with the performance characteristics of the laser, the author also explains the design procedure of this new radiator..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 27 (1992)
Opto-electron spectrum from interaction of two-frequency laser with atoms
[in Chinese], and [in Chinese]
A simple model of interaction of two-frequency laser with atoms is presented in this paper. The opto-electron spectrum produced in this model is calculated and the structure of photo-electron peaks are analysed.A simple model of interaction of two-frequency laser with atoms is presented in this paper. The opto-electron spectrum produced in this model is calculated and the structure of photo-electron peaks are analysed..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 46 (1992)
Investigation of excited triplet absorption spectrum and relaxation kinetics of dimeric chlorophyll α
[in Chinese], and [in Chinese]
The experimental set-up of time resolved, differential absorption used to mreasure the excited triplet absorption spectrum of dimerio chlorophyll α and the experimental results are reported. The peak absorption of the excited triplet of T1(4) and T1(D)are at 462nm and 466nrn,and the subsidiary maxima at 510 nm and 526 The experimental set-up of time resolved, differential absorption used to mreasure the excited triplet absorption spectrum of dimerio chlorophyll α and the experimental results are reported. The peak absorption of the excited triplet of T1(4) and T1(D)are at 462nm and 466nrn,and the subsidiary maxima at 510 nm and 526 nm, respectively. The triplet lifetime of T1(A), T1(D), measured with a time-resolved double-beam method,is A/T=9.8+0.5,us and D/T=80+4us, respectively..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 51 (1992)
Raman spectra of color centers induced by irradiation in KBr:Pb2+single crystal
[in Chinese], and [in Chinese]
The Eaman spectra of KBr:Pb2+ single crystal after long X-ray irradiation at liquid nitrogen temperature are reported. The five new Eaman peaks are assigned to the local vibrations of the color centers induced by X-ray irradiation.The Eaman spectra of KBr:Pb2+ single crystal after long X-ray irradiation at liquid nitrogen temperature are reported. The five new Eaman peaks are assigned to the local vibrations of the color centers induced by X-ray irradiation..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 57 (1992)
Self-pumped phase conjugation in KNbO3:Fe crystals
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper presents a special out and an optimum experimental configuration for KNbO3:Fe photorefractive crystals. For the first time, a self-pumped phase conjugation using total internal reflection at room temperature is obtained, whose reflectivity is up to -60%.This paper presents a special out and an optimum experimental configuration for KNbO3:Fe photorefractive crystals. For the first time, a self-pumped phase conjugation using total internal reflection at room temperature is obtained, whose reflectivity is up to -60%..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 60 (1992)
Light induced acoustic effect in LiNbO3:Fe crystals
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The phenomena of acoustic emission in LN:Fe crystals nave been observed during the process of light induced quasi-breakdown. It is found that the super high frequency acoustic signal has been modulated by the low frequency acoustic wave which was introduced into the crystals, the frequency of which increases with the iThe phenomena of acoustic emission in LN:Fe crystals nave been observed during the process of light induced quasi-breakdown. It is found that the super high frequency acoustic signal has been modulated by the low frequency acoustic wave which was introduced into the crystals, the frequency of which increases with the increasing of intensity of incident light and the period of the breakdown is the same as the jump one of the photovoltaic current and the light induced change of refractive index. It is caused by the strain effect of crystal induced from jumped space change field..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 63 (1992)
Study on Doppler-free spectra of Rb D2hfs lines by laser diode
[in Chinese], [in Chinese], and [in Chinese]
Hyperflne structure spectra of Eb D2 lines are recorded by means of laser diode as light source and the comparison with the calculated resuels is made.Hyperflne structure spectra of Eb D2 lines are recorded by means of laser diode as light source and the comparison with the calculated resuels is made..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 72 (1992)
One photon absorption of slow electron colliding with positronium in laser field
[in Chinese], and [in Chinese]
The one photon absorption of slow electron colliding with positroninm in a laser field has been examined and the accurate variational scattsring phase shifts have been used to calculate the free-free absorption cross section.The one photon absorption of slow electron colliding with positroninm in a laser field has been examined and the accurate variational scattsring phase shifts have been used to calculate the free-free absorption cross section..
Chinese Journal of Lasers
- Publication Date: Jan. 01, 1900
- Vol. 19, Issue 1, 78 (1992)
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