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RSS2003 Vol. 15, No. 01
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2003,
15.
Abstract:
Using a laser longpath experimental system which White cell with CO2 of 80 or 40 kPa, the highresolution absorption spectra of CO2 near 1.315μm have been recorded and the spectroscopic line parameters are obtained. They are comparable with the da...
Using a laser longpath experimental system which White cell with CO2 of 80 or 40 kPa, the highresolution absorption spectra of CO2 near 1.315μm have been recorded and the spectroscopic line parameters are obtained. They are comparable with the da...
2003,
15.
Abstract:
Expressions describing couplings between different emitters of a diode laser array (DLA), positioned in an external cavity (EC), have been deduced. The results show that: the increase of the EC length reduce the differences between these coupling coe...
Expressions describing couplings between different emitters of a diode laser array (DLA), positioned in an external cavity (EC), have been deduced. The results show that: the increase of the EC length reduce the differences between these coupling coe...
2003,
15.
Abstract:
Photoluminescence (PL) and optical transient current spectra (OTCS) were observed from GaAs/AlGaAs quantum wells structure excited by midinfrared free electron laser (FEL) irradiation. The experimental results of PL showed that the characteristic PL...
Photoluminescence (PL) and optical transient current spectra (OTCS) were observed from GaAs/AlGaAs quantum wells structure excited by midinfrared free electron laser (FEL) irradiation. The experimental results of PL showed that the characteristic PL...
2003,
15.
Abstract:
A series of the output of the HgCdTe ( PC ) detector is observed when irradiated by CW 1 319 nm laser and 10 600nm laser respectively. The saturation threshold of the HgCdTe(PC) detector irradiated by CW 1 319nm laser is given; some phenomena were ob...
A series of the output of the HgCdTe ( PC ) detector is observed when irradiated by CW 1 319 nm laser and 10 600nm laser respectively. The saturation threshold of the HgCdTe(PC) detector irradiated by CW 1 319nm laser is given; some phenomena were ob...
2003,
15.
Abstract:
Owing to the PTD effect in the lenses of spatial filter, large temporal front distortion of femtosecond pulses occurs in the spatial filter. In this work, in order to design a spatial filter which is applicable to high power femtosecond laser system,...
Owing to the PTD effect in the lenses of spatial filter, large temporal front distortion of femtosecond pulses occurs in the spatial filter. In this work, in order to design a spatial filter which is applicable to high power femtosecond laser system,...
2003,
15.
Abstract:
In high energy X-ray radiography system , CsI convertor is usually used to convert the X-ray image into a visible image which can be recorded by other high sensitive image system . The scattering light from the inner side of the convertor can reduce ...
In high energy X-ray radiography system , CsI convertor is usually used to convert the X-ray image into a visible image which can be recorded by other high sensitive image system . The scattering light from the inner side of the convertor can reduce ...
2003,
15.
Abstract:
In our experimental research on laser irradiating semiconductor photodetectors, chaos in the PV-type HgCdTe detectors irradiated by a mild stable continuous wave laser is found. The detectors will give chaotic output when the irradiation power densit...
In our experimental research on laser irradiating semiconductor photodetectors, chaos in the PV-type HgCdTe detectors irradiated by a mild stable continuous wave laser is found. The detectors will give chaotic output when the irradiation power densit...
2003,
15.
Abstract:
By using the Fourier series expansion, approximate analytical propagation equations of laser beams through a paraxial optical ABCD system with different apertures are derived. The hardedged aperture can be regarded as a special case treated here, wh...
By using the Fourier series expansion, approximate analytical propagation equations of laser beams through a paraxial optical ABCD system with different apertures are derived. The hardedged aperture can be regarded as a special case treated here, wh...
2003,
15.
Abstract:
The atmospheric attenuation properties of the HF and DF laser transmission. The absorption of watervapor in the atmosphere is very weak to the DF spectral lines, while those of the watervapor and CO2 are very strong to the HF spectral lines. The at...
The atmospheric attenuation properties of the HF and DF laser transmission. The absorption of watervapor in the atmosphere is very weak to the DF spectral lines, while those of the watervapor and CO2 are very strong to the HF spectral lines. The at...
2003,
15.
Abstract:
The large scale (ten/tens meters) quasiconcentric cavity used in high average output power farinfrared FEL and the shortpulse effects require that the numerical simulation must involve evolution in both space and time, which means huge quantity of...
The large scale (ten/tens meters) quasiconcentric cavity used in high average output power farinfrared FEL and the shortpulse effects require that the numerical simulation must involve evolution in both space and time, which means huge quantity of...
2003,
15.
Abstract:
The response of silicon p-n junction solar cell to DF laser irradiation is studied. It is found in the experiment that DF laser doesn't generate much photocarriers in the solar cell though the laser power is high enough to cause notable temperature r...
The response of silicon p-n junction solar cell to DF laser irradiation is studied. It is found in the experiment that DF laser doesn't generate much photocarriers in the solar cell though the laser power is high enough to cause notable temperature r...
2003,
15.
Abstract:
Peking University is planning to put up a FEL facility�PKU-FEL, which will be used as a tool for experimental studies on nonlinear transient physical process, chemical kinetics, molecular biology, material science, etc. Based on PKU-SCAF, a supercond...
Peking University is planning to put up a FEL facility�PKU-FEL, which will be used as a tool for experimental studies on nonlinear transient physical process, chemical kinetics, molecular biology, material science, etc. Based on PKU-SCAF, a supercond...
2003,
15.
Abstract:
According to characteristics of IR systems, the intensity distribution of an optical element in IR system is analyzed by optical gain. The optical element at focus plane is damageable element by laser. The damage mechanism of the detection and guidan...
According to characteristics of IR systems, the intensity distribution of an optical element in IR system is analyzed by optical gain. The optical element at focus plane is damageable element by laser. The damage mechanism of the detection and guidan...
2003,
15.
Abstract:
Capacitors are important storage components in pulsed power equipment. In order to reduce the volume of the power source equipment, the energy storage density of the capacitors must be increased. This paper describes the basic breakdown mechanism of ...
Capacitors are important storage components in pulsed power equipment. In order to reduce the volume of the power source equipment, the energy storage density of the capacitors must be increased. This paper describes the basic breakdown mechanism of ...
2003,
15.
Abstract:
Ti-50.6at.%Ni shape memory alloy specimens were irradiated under the austenite state (parent phase) using a tandem accelerator by 18MeV protons with doses of 1.53×1013and 1.53×1014H+/cm2. The microstructure and phase transformation of the specimens b...
Ti-50.6at.%Ni shape memory alloy specimens were irradiated under the austenite state (parent phase) using a tandem accelerator by 18MeV protons with doses of 1.53×1013and 1.53×1014H+/cm2. The microstructure and phase transformation of the specimens b...
2003,
15.
Abstract:
A high speed gated soft Xray multiframe image diagnostic system was developed for QiangGuangI generator, which was operated with a peak current of 1.5MA and a rise time of 80ns. In the system, a gated fourframe (3～5ns gate, 5～20ns separation) X...
A high speed gated soft Xray multiframe image diagnostic system was developed for QiangGuangI generator, which was operated with a peak current of 1.5MA and a rise time of 80ns. In the system, a gated fourframe (3～5ns gate, 5～20ns separation) X...
2003,
15.
Abstract:
The blowoff impulse of three different materials irradiated by soft Xray was studied on QiangguangI pulsed accelerator. The experimental results show that the coupling coefficients of blowoff impulse for grey paint, white paint and aluminum alloy i...
The blowoff impulse of three different materials irradiated by soft Xray was studied on QiangguangI pulsed accelerator. The experimental results show that the coupling coefficients of blowoff impulse for grey paint, white paint and aluminum alloy i...
2003,
15.
Abstract:
High spectral resolution transmission grating spectrometer is established by combining newly manufactured 2 000 l/mm transmission grating with a softＸray CCD. Transmission grating efficiencies have been studied experimentally and theoretically in o...
High spectral resolution transmission grating spectrometer is established by combining newly manufactured 2 000 l/mm transmission grating with a softＸray CCD. Transmission grating efficiencies have been studied experimentally and theoretically in o...
2003,
15.
Abstract:
The experimental investigation on non-equilibrium of Au plasmas irradiated directly by laser and heated by X-ray radiation was made in this paper. The physical mechanism was investigated and analyzed. Two kinds of targets, which were cone-disk and an...
The experimental investigation on non-equilibrium of Au plasmas irradiated directly by laser and heated by X-ray radiation was made in this paper. The physical mechanism was investigated and analyzed. Two kinds of targets, which were cone-disk and an...
2003,
15.
Abstract:
The fast Zpinch phenomenon and the physics of fast Zpinch are introduced in this paper. And the factors which influence the instability of fast Zpinch are simply analysed. The PSPICE circuit analyses are very useful for the design of the pulsed po...
The fast Zpinch phenomenon and the physics of fast Zpinch are introduced in this paper. And the factors which influence the instability of fast Zpinch are simply analysed. The PSPICE circuit analyses are very useful for the design of the pulsed po...
2003,
15.
Abstract:
The fluid equations and numerical algorithm are given to simulate twodimensional RayleighTaylor(RT) instability in cylindrical geometry in this paper. Simulation results agree well with the linear theory of RT instability. However the threshold at ...
The fluid equations and numerical algorithm are given to simulate twodimensional RayleighTaylor(RT) instability in cylindrical geometry in this paper. Simulation results agree well with the linear theory of RT instability. However the threshold at ...
2003,
15.
Abstract:
Effect of amplitude modulation and phase perturbation of incident fundamental field on the tripling efficiency and dynamic range has been discussed in details. The method which can improve the tripling efficiency and dynamic range has been proposed. ...
Effect of amplitude modulation and phase perturbation of incident fundamental field on the tripling efficiency and dynamic range has been discussed in details. The method which can improve the tripling efficiency and dynamic range has been proposed. ...
2003,
15.
Abstract:
The paper describes the numerical study on the vircator with stepped waveguide. Simulation results demonstrate that the length of stepped waveguide can strongly affect the microwave generation，when the resonance frequency of equivalent column cavity ...
The paper describes the numerical study on the vircator with stepped waveguide. Simulation results demonstrate that the length of stepped waveguide can strongly affect the microwave generation，when the resonance frequency of equivalent column cavity ...
2003,
15.
Abstract:
In order to essentially improve microwave output power and efficiency, a new idea about magnetically insulated transmission line oscillator (MILO) is brought forward, which use most of the load current to produce microwave. A new type of MILO that co...
In order to essentially improve microwave output power and efficiency, a new idea about magnetically insulated transmission line oscillator (MILO) is brought forward, which use most of the load current to produce microwave. A new type of MILO that co...
2003,
15.
Abstract:
A new type high efficiency Multiwave Cerenkov Generator is designed by employing a resonant cavity between the second slow wave structure and the output horn，and its physical process is analyzed by means of 2.5 PIC simulation. It is shown that, due t...
A new type high efficiency Multiwave Cerenkov Generator is designed by employing a resonant cavity between the second slow wave structure and the output horn，and its physical process is analyzed by means of 2.5 PIC simulation. It is shown that, due t...
