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RSS2006 Vol. 18, No. 10
Recommend Articles
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2006,
18.
Abstract:
Coherent beam combination of fiber laser array is an important technology in realizing high power fiber laser system. In this paper, master oscillator-power amplifier scheme is used to realize phase control of three ytterbium fiber amplifiers. In the...
Coherent beam combination of fiber laser array is an important technology in realizing high power fiber laser system. In this paper, master oscillator-power amplifier scheme is used to realize phase control of three ytterbium fiber amplifiers. In the...
2006,
18.
Abstract:
A novel on-line measurement method for continuous wave high energy laser beam is presented. The system based on this method is mainly consisted of a scanning circular reflector and a photoelectric detector array disposed along the circumference of th...
A novel on-line measurement method for continuous wave high energy laser beam is presented. The system based on this method is mainly consisted of a scanning circular reflector and a photoelectric detector array disposed along the circumference of th...
2006,
18.
Abstract:
By analyzing and comparing their one-dimensional solutions for laser-induced thermoelastic problem, the criterion of model selection between two commonly used laser heating models——surface heating and volumetric heating is presented. It is shown that...
By analyzing and comparing their one-dimensional solutions for laser-induced thermoelastic problem, the criterion of model selection between two commonly used laser heating models——surface heating and volumetric heating is presented. It is shown that...
2006,
18.
Abstract:
Based on the Rytov approximation which is modified with a filter function, expressions are derived for the variance associated with the beam wander in moderate to strong turbulence regimes. The effects of the diameter of the effective scattering regi...
Based on the Rytov approximation which is modified with a filter function, expressions are derived for the variance associated with the beam wander in moderate to strong turbulence regimes. The effects of the diameter of the effective scattering regi...
2006,
18.
Abstract:
A new system is developed for real-time monitoring of the optical turbulence altitude profile. A laser beam is transmitted and focused on certain height to form an artificial beacon. Its backscattering light propagates through the atmosphere. The lid...
A new system is developed for real-time monitoring of the optical turbulence altitude profile. A laser beam is transmitted and focused on certain height to form an artificial beacon. Its backscattering light propagates through the atmosphere. The lid...
2006,
18.
Abstract:
The optical trubulence on the coast has been measured with balloon borne thermosonde developed by ourselves.The thermosonde is lifted up to 20 km by hydrogen inflated balloons at a climbing rate of 4 m·s-1.The microthermal sensor is coupled to a mete...
The optical trubulence on the coast has been measured with balloon borne thermosonde developed by ourselves.The thermosonde is lifted up to 20 km by hydrogen inflated balloons at a climbing rate of 4 m·s-1.The microthermal sensor is coupled to a mete...
2006,
18.
Abstract:
In this paper, a theoretical model of the optical transmission was established to study the optical distortion resulted from the dynamic thermal effect. Numerical simulation shows that the optical distortion is mainly caused by the uniformity deforma...
In this paper, a theoretical model of the optical transmission was established to study the optical distortion resulted from the dynamic thermal effect. Numerical simulation shows that the optical distortion is mainly caused by the uniformity deforma...
2006,
18.
Abstract:
The thermal effect of the medium in the end-pumped Nd:YAG thin-disk laser on the wavefront distribution was studied, and the calculation expression of the beam distribution in the thin-disk laser was provided. The wavefront distributions of the thin ...
The thermal effect of the medium in the end-pumped Nd:YAG thin-disk laser on the wavefront distribution was studied, and the calculation expression of the beam distribution in the thin-disk laser was provided. The wavefront distributions of the thin ...
2006,
18.
Abstract:
In terms of Fourier optics, the amplitude expression of the output pulse from the misaligned tiled-grating compressor in the far-field is obtained. A theoretical model for the analysis of all the errors is put up, where the idea that the impact of al...
In terms of Fourier optics, the amplitude expression of the output pulse from the misaligned tiled-grating compressor in the far-field is obtained. A theoretical model for the analysis of all the errors is put up, where the idea that the impact of al...
2006,
18.
Abstract:
A suitable method is proposed for detecting and tracking dim target in IR image sequence with low contrast and moving background. According to the correlation of moving background and position continuity of the moving target, the movement of backgrou...
A suitable method is proposed for detecting and tracking dim target in IR image sequence with low contrast and moving background. According to the correlation of moving background and position continuity of the moving target, the movement of backgrou...
2006,
18.
Abstract:
The development of diamond like carbon(DLC) film coated optical windows with wide spectral transmission is presented in this paper. This DLC coated window can be used as an optical window in the spectral range of 0.53~12.00 μm with the transmission o...
The development of diamond like carbon(DLC) film coated optical windows with wide spectral transmission is presented in this paper. This DLC coated window can be used as an optical window in the spectral range of 0.53~12.00 μm with the transmission o...
2006,
18.
Abstract:
Nano-crystalline Cu ribbons were prepared by single-roll method under various technical parameters, and their structures were characterized by XRD. Experimental results show that the crystalline grain of nano-crystalline Cu ribbons is 65.17～121.8 nm....
Nano-crystalline Cu ribbons were prepared by single-roll method under various technical parameters, and their structures were characterized by XRD. Experimental results show that the crystalline grain of nano-crystalline Cu ribbons is 65.17～121.8 nm....
2006,
18.
Abstract:
Supercontinuum generation and self-focusing effect of ultra-short pulse propagation in Kerr media were investigated according to (3+1) dimensions' nonlinear Schrdinger equation. Results indicate that spectral super-broadening without self-focus can ...
Supercontinuum generation and self-focusing effect of ultra-short pulse propagation in Kerr media were investigated according to (3+1) dimensions' nonlinear Schrdinger equation. Results indicate that spectral super-broadening without self-focus can ...
2006,
18.
Abstract:
In order to analyze the far-field temperature gradient, a finite element analysis (FEA) of the heat transfer in hollow micro-sphere filled with ICF fuel was made, providing the border adiabatic, meshing the model intellectualizedly, and supposing the...
In order to analyze the far-field temperature gradient, a finite element analysis (FEA) of the heat transfer in hollow micro-sphere filled with ICF fuel was made, providing the border adiabatic, meshing the model intellectualizedly, and supposing the...
2006,
18.
Abstract:
Methyl-situ-modified silica sols were obtained by hydrolysis and co-condensation reactions occurred in base-catalyzed system by carefully controlling the sol-gel process of Methyltriethoxysilane (MTES) and Tetraethoxysilane (TEOS). Hydrophobic- antir...
Methyl-situ-modified silica sols were obtained by hydrolysis and co-condensation reactions occurred in base-catalyzed system by carefully controlling the sol-gel process of Methyltriethoxysilane (MTES) and Tetraethoxysilane (TEOS). Hydrophobic- antir...
2006,
18.
Abstract:
The effects of the environmental condition and the beam quality of the third harmonic UV laser with a pulse width of about 1 ns and a wavelength of 351 nm on the self-focusing intensity and self-focusing distance in fused silica were analyzed. The th...
The effects of the environmental condition and the beam quality of the third harmonic UV laser with a pulse width of about 1 ns and a wavelength of 351 nm on the self-focusing intensity and self-focusing distance in fused silica were analyzed. The th...
2006,
18.
Abstract:
By employing the method of the separation of variables in the circular-cylindrical system, a recursive formula for the electromagnetic fields in the metal coaxial line filled with multi-layer reciprocal chiral media is derived. The general mode eigen...
By employing the method of the separation of variables in the circular-cylindrical system, a recursive formula for the electromagnetic fields in the metal coaxial line filled with multi-layer reciprocal chiral media is derived. The general mode eigen...
2006,
18.
Abstract:
Through placing a thin hollow electron beam in the electronic tunnel of the tunneladder TNT, this article derived the linear theory of the tunneladder traveling wave tubes(TWT). A dispersion equation of the tunneladder TWT was derived, and the small ...
Through placing a thin hollow electron beam in the electronic tunnel of the tunneladder TNT, this article derived the linear theory of the tunneladder traveling wave tubes(TWT). A dispersion equation of the tunneladder TWT was derived, and the small ...
2006,
18.
Abstract:
An asymmetrical flat-plate guided-wave EMP simulator (MDES-60) with distributed terminators, which is mainly used for short-line test, has been designed and constructed. The volume between two parallel plates is 5 m long, 2 m wide and 1 m high. The w...
An asymmetrical flat-plate guided-wave EMP simulator (MDES-60) with distributed terminators, which is mainly used for short-line test, has been designed and constructed. The volume between two parallel plates is 5 m long, 2 m wide and 1 m high. The w...
2006,
18.
Abstract:
The characteristic of high power microwave(HPM) propagation through ionosphere is mainly determined by the diversification of the atmospheric refractive index, while the refractive index has positive correlation with the electron concentration at cor...
The characteristic of high power microwave(HPM) propagation through ionosphere is mainly determined by the diversification of the atmospheric refractive index, while the refractive index has positive correlation with the electron concentration at cor...
2006,
18.
Abstract:
The calculation of coaxial output cavities, simulation of microwave extraction from a modulated intense relativistic electron beams, optimization on beams and output cavity geometry parameters, as well as the experiments of microwave extraction for a...
The calculation of coaxial output cavities, simulation of microwave extraction from a modulated intense relativistic electron beams, optimization on beams and output cavity geometry parameters, as well as the experiments of microwave extraction for a...
2006,
18.
Abstract:
BEPCII upgrading project needs a new high current electron gun. The design stage such as physical design, mechanical design and control system design of this new electron gun is described. The emission current is designed to be higher than 10 A for t...
BEPCII upgrading project needs a new high current electron gun. The design stage such as physical design, mechanical design and control system design of this new electron gun is described. The emission current is designed to be higher than 10 A for t...
2006,
18.
Abstract:
To abstract linear optics of storage ring, response matrix fitting technique was developed as an advanced diagnostic tool of storage ring. The Matlab-based LOCO(Linear Optics of Closed Orbit) was a representative of response matrix fitting codes. Rec...
To abstract linear optics of storage ring, response matrix fitting technique was developed as an advanced diagnostic tool of storage ring. The Matlab-based LOCO(Linear Optics of Closed Orbit) was a representative of response matrix fitting codes. Rec...
2006,
18.
Abstract:
The high intense electron beam interacts with a high Z target, producing the X-rays for flash radiography. The focal spot size of the X-ray source is a critical parameter which degrades resolution in the flash radiography. This paper describes a slit...
The high intense electron beam interacts with a high Z target, producing the X-rays for flash radiography. The focal spot size of the X-ray source is a critical parameter which degrades resolution in the flash radiography. This paper describes a slit...
2006,
18.
Abstract:
The paper describes the equipment of integral measurement of dipole magnetic field for HIRFL-CSRe and introduces integral field measurement method and content. In order to adjust the effective length of magnet and to improve the dispersivity of the 1...
The paper describes the equipment of integral measurement of dipole magnetic field for HIRFL-CSRe and introduces integral field measurement method and content. In order to adjust the effective length of magnet and to improve the dispersivity of the 1...
2006,
18.
Abstract:
The principle and technical advantages of a linear transformer driver are introduced and the critical points in designing the fast LTD stage are presented. A fast LTD stage with current rising time less than 100 ns was designed and primary experiment...
The principle and technical advantages of a linear transformer driver are introduced and the critical points in designing the fast LTD stage are presented. A fast LTD stage with current rising time less than 100 ns was designed and primary experiment...
2006,
18.
Abstract:
The ultra-wide band(UWB) impulse radar system is developed and studied, which includes a solid state pulser based on power synthesis technology, an UWB planar TEM horn antenna array for transmitting, an UWB slot array for receiving, a quadrature demo...
The ultra-wide band(UWB) impulse radar system is developed and studied, which includes a solid state pulser based on power synthesis technology, an UWB planar TEM horn antenna array for transmitting, an UWB slot array for receiving, a quadrature demo...
2006,
18.
Abstract:
This paper mainly discusses the life characteristic and failure mechanism of the multilayer ceramic capacitor (MLC) under various working conditions such as charge-discharge frequency, charge voltage, charge-discharge duty radio and discharge inverse...
This paper mainly discusses the life characteristic and failure mechanism of the multilayer ceramic capacitor (MLC) under various working conditions such as charge-discharge frequency, charge voltage, charge-discharge duty radio and discharge inverse...
2006,
18.
Abstract:
The paper discusses the magnetic-core structure of high power pulse transformer and its magnetic-core material selection. The effect of magnetic core on the distribution of transformer electric and magnetic field and the coupling coefficient is theor...
The paper discusses the magnetic-core structure of high power pulse transformer and its magnetic-core material selection. The effect of magnetic core on the distribution of transformer electric and magnetic field and the coupling coefficient is theor...
2006,
18.
Abstract:
The explosively-driven flux compression generators(FCGs) are always used to drive pulse modulators, and high power pulses can be generated on the diodes. In this paper, two dynamically cascaded FCGs were ignited one after another to drive a modulator...
The explosively-driven flux compression generators(FCGs) are always used to drive pulse modulators, and high power pulses can be generated on the diodes. In this paper, two dynamically cascaded FCGs were ignited one after another to drive a modulator...
2006,
18.
Abstract:
Gas discharge performance of LaB6 in helium and nitrogen is reported. The results show that as the voltage rises, the discharge mechanism changes from glow discharge into arc discharge, the helium discharge tube can work long time and steadily under ...
Gas discharge performance of LaB6 in helium and nitrogen is reported. The results show that as the voltage rises, the discharge mechanism changes from glow discharge into arc discharge, the helium discharge tube can work long time and steadily under ...
2006,
18.
Abstract:
Due to the high density of the prebreakdown current of explosive electron emission, the space charge effect should be considered in the simulation of the initial thermal instability of explosive electron emission. Based on the metallic microprtrusion...
Due to the high density of the prebreakdown current of explosive electron emission, the space charge effect should be considered in the simulation of the initial thermal instability of explosive electron emission. Based on the metallic microprtrusion...
2006,
18.
Abstract:
A new coupled-mode theory based on scalar modes is presented for the anisotropic waveguide with random disturbance via Helmholtz equation and a modified dielectric tensor. The polarization coupling term and birefringence coupling term are included in...
A new coupled-mode theory based on scalar modes is presented for the anisotropic waveguide with random disturbance via Helmholtz equation and a modified dielectric tensor. The polarization coupling term and birefringence coupling term are included in...
2006,
18.
Abstract:
Contrastive experiment of hydrogen gas discharge source bombarding targets has been done. The result of contrast between hydrogen gas discharge source bombarding new and used targets ensures that a kind of anomalous particles have been produced throu...
Contrastive experiment of hydrogen gas discharge source bombarding targets has been done. The result of contrast between hydrogen gas discharge source bombarding new and used targets ensures that a kind of anomalous particles have been produced throu...
2006,
18.
Abstract:
Effects of ultrasonic cleaning and laser conditioning of antireflective coatings on laser damage behaviors were investigated. The antireflective coatings at 1 064 nm were prepared by electron beam evaporation, and the samples were post-treated by ult...
Effects of ultrasonic cleaning and laser conditioning of antireflective coatings on laser damage behaviors were investigated. The antireflective coatings at 1 064 nm were prepared by electron beam evaporation, and the samples were post-treated by ult...
2006,
18.
Abstract:
It is pointed out that the depth of focus, diffraction from aperture and radiation scattering are three main sources for image blurring of CCD receiving system. The radiation scattering is studied by MCNP simulation. The distributions of energy depos...
It is pointed out that the depth of focus, diffraction from aperture and radiation scattering are three main sources for image blurring of CCD receiving system. The radiation scattering is studied by MCNP simulation. The distributions of energy depos...
2006,
18.
Abstract:
Penetrating depth and dose distribution of electron beam in flue gas can influence efficiency of desulfurization and denitration. Beam energy loss during passing through the metal foil window has been calculated by theory and Monte Carlo simulation. ...
Penetrating depth and dose distribution of electron beam in flue gas can influence efficiency of desulfurization and denitration. Beam energy loss during passing through the metal foil window has been calculated by theory and Monte Carlo simulation. ...
2006,
18.
Abstract:
The profile and its detail information of the center projecting line of the radiographic image is interpreted with the results of the Monte Carlo simulation. It is found that the scatter, the source spot size and the shape of H-D characteristic curve...
The profile and its detail information of the center projecting line of the radiographic image is interpreted with the results of the Monte Carlo simulation. It is found that the scatter, the source spot size and the shape of H-D characteristic curve...
2006,
18.
Abstract:
The Nd3+ doped 2% 40B2O3-(15-χ)Nb2O5-45BaO-χLa2O3(χ=10, 7.5, 5, 2.5, molar percent) glass was prepared by melting method. The absorption, emission spectra and DTA curves of the glass were measured. The Judd-Ofelt parameters were calculated from their...
The Nd3+ doped 2% 40B2O3-(15-χ)Nb2O5-45BaO-χLa2O3(χ=10, 7.5, 5, 2.5, molar percent) glass was prepared by melting method. The absorption, emission spectra and DTA curves of the glass were measured. The Judd-Ofelt parameters were calculated from their...
