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RSS2005 Vol. 17, No. 05
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Fabrication of collimating module and measurement of far field divergence of laser beam of 1 550 nm
2005,
17.
Abstract:
Theory analysis of the collimation about Gaussian light beam is described and the designed collimating lens have achieved the technique target in wavefront aberration by intervention measurement. The experimental data are measured by the designed exp...
Theory analysis of the collimation about Gaussian light beam is described and the designed collimating lens have achieved the technique target in wavefront aberration by intervention measurement. The experimental data are measured by the designed exp...
2005,
17.
Abstract:
Laser propagating through resonance media taking into account of spatial effect was discussed by simultaneously solving the Maxwell-Bloch equations with definite differential method. Results indicate that the propagation of a 2π pulse form would no l...
Laser propagating through resonance media taking into account of spatial effect was discussed by simultaneously solving the Maxwell-Bloch equations with definite differential method. Results indicate that the propagation of a 2π pulse form would no l...
2005,
17.
Abstract:
Nd:YAG laser is used as a spontaneous vibrational Raman scattering (SVRS) source in combustion diagnostics. Multiple species data are acquired from both mathane-air combustion and solid fuel combustion. Spatially resolved Raman scattering spectra are...
Nd:YAG laser is used as a spontaneous vibrational Raman scattering (SVRS) source in combustion diagnostics. Multiple species data are acquired from both mathane-air combustion and solid fuel combustion. Spatially resolved Raman scattering spectra are...
2005,
17.
Abstract:
In this paper, sol-gel single-layer SiO2 anti-reflective coatings modified with PEG were deposited on K9 glass by sol-gel dipping-coating method. The coatings were irradiated by a Q-switched Nd:YAG high power laser whose wavelength was 1 064 nm and p...
In this paper, sol-gel single-layer SiO2 anti-reflective coatings modified with PEG were deposited on K9 glass by sol-gel dipping-coating method. The coatings were irradiated by a Q-switched Nd:YAG high power laser whose wavelength was 1 064 nm and p...
2005,
17.
Abstract:
The beam propagation in nonlocal Kerr media is modeled by the nonlocal nonlinear Schrodinger equation. This problem can be re-interpreted with the variational approach. In the case of strong nonlocality, the response function can be expanded in Taylo...
The beam propagation in nonlocal Kerr media is modeled by the nonlocal nonlinear Schrodinger equation. This problem can be re-interpreted with the variational approach. In the case of strong nonlocality, the response function can be expanded in Taylo...
2005,
17.
Abstract:
The double clad fiber made in China was fabricated by the modified chemical-vapor deposition (MCVD) technique. The geometric, fluorescence, and laser characters of the fiber were measured. The fiber has a 16 ?m diameter Yb-doped core with a numerical...
The double clad fiber made in China was fabricated by the modified chemical-vapor deposition (MCVD) technique. The geometric, fluorescence, and laser characters of the fiber were measured. The fiber has a 16 ?m diameter Yb-doped core with a numerical...
2005,
17.
Abstract:
In order to evaluate the different design schemes of high- power laser facility and choose the best configuration, a relatively complete system of evaluation indices for laser design was presented. And then, mathematical model of the evaluation syste...
In order to evaluate the different design schemes of high- power laser facility and choose the best configuration, a relatively complete system of evaluation indices for laser design was presented. And then, mathematical model of the evaluation syste...
2005,
17.
Abstract:
A numerical model is presented to simulate the temperature distribution on the rotational cylindrical shell under laser irradiation. Thermal property parameters varying with temperature and the rotating frequency of the cylindrical shell are included...
A numerical model is presented to simulate the temperature distribution on the rotational cylindrical shell under laser irradiation. Thermal property parameters varying with temperature and the rotating frequency of the cylindrical shell are included...
2005,
17.
Abstract:
The 3-dimensional transient temperature distribution in a tube YAG laser pumped by repeat pulses was studied by experiment and simulation. The result shows that the transient temperature in the tube increases with the number of pump pulses like a saw...
The 3-dimensional transient temperature distribution in a tube YAG laser pumped by repeat pulses was studied by experiment and simulation. The result shows that the transient temperature in the tube increases with the number of pump pulses like a saw...
2005,
17.
Abstract:
A theoretical model of one point side-pumped Yb3+ doped double clad fiber laser was built up. By numerical analysis, the distribution of pump power and laser power along the fiber, and the relation between pump position and output power were obtained...
A theoretical model of one point side-pumped Yb3+ doped double clad fiber laser was built up. By numerical analysis, the distribution of pump power and laser power along the fiber, and the relation between pump position and output power were obtained...
2005,
17.
Abstract:
A mobile dual-wavelength Mie lidar(DWL) is introduced. The DWL can be used to measure the aerosol extinction coefficient profiles at 1 064 nm and 532 nm wavelength. The DWL system is composed of a transmission unit, a signal receiving unit, a signal ...
A mobile dual-wavelength Mie lidar(DWL) is introduced. The DWL can be used to measure the aerosol extinction coefficient profiles at 1 064 nm and 532 nm wavelength. The DWL system is composed of a transmission unit, a signal receiving unit, a signal ...
2005,
17.
Abstract:
In this paper we have studied the excitation of plasma wake field by an ultrashort laser pulse in the near-resonant regime through one-dimensional particle-in-cell (PIC) simulations. Preliminary results are given of the amplitude of the plasma wake f...
In this paper we have studied the excitation of plasma wake field by an ultrashort laser pulse in the near-resonant regime through one-dimensional particle-in-cell (PIC) simulations. Preliminary results are given of the amplitude of the plasma wake f...
2005,
17.
Abstract:
The studies of the wavelet structures of the molecular excitations with the high intense laser are very active in the strong laser field physics. The one-dimensional time-dependent Schr-dinger equation was numerically solved with the symmetric splitt...
The studies of the wavelet structures of the molecular excitations with the high intense laser are very active in the strong laser field physics. The one-dimensional time-dependent Schr-dinger equation was numerically solved with the symmetric splitt...
2005,
17.
Abstract:
Inertial confinement fusion(ICF) experiments need the incorporation of dopant atoms into the low density foam. Through a phase-separation process, the Bromine (Br) doped foams with a typical density of 50 mg/cm3 were synthesized contaning 58.91% Br a...
Inertial confinement fusion(ICF) experiments need the incorporation of dopant atoms into the low density foam. Through a phase-separation process, the Bromine (Br) doped foams with a typical density of 50 mg/cm3 were synthesized contaning 58.91% Br a...
2005,
17.
Abstract:
The K-shell emission lines of laser-produced aluminum plasma were measured by the space-resolved spectrometer, which was constructed by a flat crystal spectrometer with a 20 μm-wide slit. The electron density profile beyond the critical density is ob...
The K-shell emission lines of laser-produced aluminum plasma were measured by the space-resolved spectrometer, which was constructed by a flat crystal spectrometer with a 20 μm-wide slit. The electron density profile beyond the critical density is ob...
Experimental studies of the interaction of microwaves with mixture burning plasmas in the atmosphere
2005,
17.
Abstract:
A kind of chemical mixture is designed and prepared. With the method of thermodynamics, the average electron density of the plasma generated by burning the mixture is calculated. The reflection and attenuation of the microwaves, in the band of 2~15 G...
A kind of chemical mixture is designed and prepared. With the method of thermodynamics, the average electron density of the plasma generated by burning the mixture is calculated. The reflection and attenuation of the microwaves, in the band of 2~15 G...
2005,
17.
Abstract:
The structure of quadrupole mass spectrometers (QMS) and the quantitative analysis principle of gas analysis mass spectrometers (GAM) are described. The GAM system is very sensitive and can be used to quantitatively analyze the gas mixture in fusion ...
The structure of quadrupole mass spectrometers (QMS) and the quantitative analysis principle of gas analysis mass spectrometers (GAM) are described. The GAM system is very sensitive and can be used to quantitatively analyze the gas mixture in fusion ...
2005,
17.
Abstract:
To explore heat transfer process between the hollow glass microspheres and furnace atmosphere in fabricating hollow glass microspheres by the sol-gel technology, the effect of component percentage, temperature and total pressure of Ar/He gas mixture ...
To explore heat transfer process between the hollow glass microspheres and furnace atmosphere in fabricating hollow glass microspheres by the sol-gel technology, the effect of component percentage, temperature and total pressure of Ar/He gas mixture ...
2005,
17.
Abstract:
X-ray calorimeters are ready to measure the total soft X-ray energy emitted from the plasma produced by laser because of their bodily absorption, linear response, insensitivity to the electromagnetic disturbance, and so on. The calorimeters mainly in...
X-ray calorimeters are ready to measure the total soft X-ray energy emitted from the plasma produced by laser because of their bodily absorption, linear response, insensitivity to the electromagnetic disturbance, and so on. The calorimeters mainly in...
2005,
17.
Abstract:
Far-field measurement is carried out for the radiation patterns from the opening of the vircator and the opening of the TM01-TE11 converter connected with the vircator, with the distance being 1.00 m between the openings of the receiving horn and tha...
Far-field measurement is carried out for the radiation patterns from the opening of the vircator and the opening of the TM01-TE11 converter connected with the vircator, with the distance being 1.00 m between the openings of the receiving horn and tha...
2005,
17.
Abstract:
The theoretical analysis about electron beam and waves interaction is presented. Based on the analysis and calculations of RF system and magnetron injection gun, a four-cavity gyro klystron amplifier is designed and optimized. 230 kW peak output powe...
The theoretical analysis about electron beam and waves interaction is presented. Based on the analysis and calculations of RF system and magnetron injection gun, a four-cavity gyro klystron amplifier is designed and optimized. 230 kW peak output powe...
2005,
17.
Abstract:
A cascaded helical explosively-driven magnetic flux compression generator (HMFCG) has more than one stage and the follow stage captures the magnetic flux of the preceding one and further amplifies the energy. In this paper, the inductance and resista...
A cascaded helical explosively-driven magnetic flux compression generator (HMFCG) has more than one stage and the follow stage captures the magnetic flux of the preceding one and further amplifies the energy. In this paper, the inductance and resista...
2005,
17.
Abstract:
A high power slow-wave source operated at low magnetic field is designed. A Cerenkov oscillator is connected to a tapered amplifier by a resonant cavity in the new device. The electron beam current is effectively used to yield microwave with high eff...
A high power slow-wave source operated at low magnetic field is designed. A Cerenkov oscillator is connected to a tapered amplifier by a resonant cavity in the new device. The electron beam current is effectively used to yield microwave with high eff...
2005,
17.
Abstract:
The reflection of tapered transmission line impedance is analyzed in theory and the VSWR curve of coaxial to plane converter is drawn. Using the FDTD method, the transmission of coaxial to plane converter is simulated. And the loss of transmission is...
The reflection of tapered transmission line impedance is analyzed in theory and the VSWR curve of coaxial to plane converter is drawn. Using the FDTD method, the transmission of coaxial to plane converter is simulated. And the loss of transmission is...
2005,
17.
Abstract:
A circuit model for magnetically insulated transmission line (MITL) based on TLCODE was established .In the model the MITL is divided into lots of lossy transmission lines, each of which comprises of a segment a lossless transmission line and a groun...
A circuit model for magnetically insulated transmission line (MITL) based on TLCODE was established .In the model the MITL is divided into lots of lossy transmission lines, each of which comprises of a segment a lossless transmission line and a groun...
2005,
17.
Abstract:
By means of a coaxial apparatus, a high electrical breakdown experiment for pressurized water dielectric with microsecond charging was carried out. The experimental results were presented and analyzed. The conclusions are as follows: (1) breakdown fo...
By means of a coaxial apparatus, a high electrical breakdown experiment for pressurized water dielectric with microsecond charging was carried out. The experimental results were presented and analyzed. The conclusions are as follows: (1) breakdown fo...
2005,
17.
Abstract:
The components, main characters and operation principles of the repetitive pulsed and intense current electron- beam accelerator which is based on pulsed transformer are introduced in this paper, on this equipment, the experiment study of long- time ...
The components, main characters and operation principles of the repetitive pulsed and intense current electron- beam accelerator which is based on pulsed transformer are introduced in this paper, on this equipment, the experiment study of long- time ...
2005,
17.
Abstract:
In practice, the working properties of the 120 gas switches which play very an important role in the operation of LTD on Qiangguang I accelerator vary with the number of discharges. With the accumulated shots of accelerator, the gas switches in LTD r...
In practice, the working properties of the 120 gas switches which play very an important role in the operation of LTD on Qiangguang I accelerator vary with the number of discharges. With the accumulated shots of accelerator, the gas switches in LTD r...
2005,
17.
Abstract:
The ionization irradiation effects were researched on very large scale integrated circuits(VLSI) made with CMOS technique under the neutron and γ-ray synthetical irradiation environment of a reactor. Through the experiments of the synthetical irradia...
The ionization irradiation effects were researched on very large scale integrated circuits(VLSI) made with CMOS technique under the neutron and γ-ray synthetical irradiation environment of a reactor. Through the experiments of the synthetical irradia...
2005,
17.
Abstract:
A simple measurement of beta-function is to detect the shift in the betatron tune as the strength of an individual quadrupole magnet is varied. The beta-function value obtained is a mean value respect to the length of the quadrupole. The beta-functio...
A simple measurement of beta-function is to detect the shift in the betatron tune as the strength of an individual quadrupole magnet is varied. The beta-function value obtained is a mean value respect to the length of the quadrupole. The beta-functio...
2005,
17.
Abstract:
Based on the comparison of several commonly used wavelets in the engineering, biorthogonal wavelet is considered to be the most suitable mother wavelet for the nanosecond pulse analysis. A time variant soft threshold is proposed in the signal denoisi...
Based on the comparison of several commonly used wavelets in the engineering, biorthogonal wavelet is considered to be the most suitable mother wavelet for the nanosecond pulse analysis. A time variant soft threshold is proposed in the signal denoisi...
2005,
17.
Abstract:
This paper summarizes a novel method for high-power high repetition rate square pulse generator. By using high voltage rectifier diodes, three single square pulses are combined to form an MHz level repetition rate square tripl-pulse. Suitable connect...
This paper summarizes a novel method for high-power high repetition rate square pulse generator. By using high voltage rectifier diodes, three single square pulses are combined to form an MHz level repetition rate square tripl-pulse. Suitable connect...
2005,
17.
Abstract:
To study the interference effect of the electromagnetic pulse (EMP) on the PIN diode, the one- dimensional numerical modeling is carried out, which solves the semiconductor equations based on the drift- diffusion model. By observing the variation of ...
To study the interference effect of the electromagnetic pulse (EMP) on the PIN diode, the one- dimensional numerical modeling is carried out, which solves the semiconductor equations based on the drift- diffusion model. By observing the variation of ...
2005,
17.
Abstract:
A Monte-Carlo method is used to simulate the transport process of X-ray photons in a model which is made by a 3 m radiographic system for FTO. The scatter distribution of system and the contribution of each cell to the scatter are obtained. It is sho...
A Monte-Carlo method is used to simulate the transport process of X-ray photons in a model which is made by a 3 m radiographic system for FTO. The scatter distribution of system and the contribution of each cell to the scatter are obtained. It is sho...
2005,
17.
Abstract:
The study of three parallel tungsten wire loads and five parallel tungsten wire loads implosion experiment on accelerator “Yang” are reported. Tungsten wires (17 μm) with separation of 1 mm were used. The pinch was driven by a 350 kA peak current, 80...
The study of three parallel tungsten wire loads and five parallel tungsten wire loads implosion experiment on accelerator “Yang” are reported. Tungsten wires (17 μm) with separation of 1 mm were used. The pinch was driven by a 350 kA peak current, 80...
2005,
17.
Abstract:
We have installed and aligned all magnets of CSRm( the main ring of cooler storage ring) by laser tracker and its fitting software Insight. Firstly, we set up a global Frame to determine the theoretical position of origin of each subsystem for whole ...
We have installed and aligned all magnets of CSRm( the main ring of cooler storage ring) by laser tracker and its fitting software Insight. Firstly, we set up a global Frame to determine the theoretical position of origin of each subsystem for whole ...
