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RSS2007 Vol. 19, No. 09
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2007,
19.
Abstract:
A novel power scaling solution based on helical-core fiber for high-power fiber lasers is introduced. The operation principle of this helical-core fiber laser and its latest theoretical and experimental development are specified. The power scaling ab...
A novel power scaling solution based on helical-core fiber for high-power fiber lasers is introduced. The operation principle of this helical-core fiber laser and its latest theoretical and experimental development are specified. The power scaling ab...
2007,
19.
Abstract:
By using an external cavity, a commercially available broad-stripe semiconductor diode laser array(DLA) has been phase locked. Measurements show that the spectral width of the phase-locked DLA is reduced to 0.16 nm compared to 1.9 nm of the free-runn...
By using an external cavity, a commercially available broad-stripe semiconductor diode laser array(DLA) has been phase locked. Measurements show that the spectral width of the phase-locked DLA is reduced to 0.16 nm compared to 1.9 nm of the free-runn...
2007,
19.
Abstract:
The calculating procedure that ethanol (C2H6O) reacting with Hydrogen peroxide (H2O2) was deduced based on chemical theory and characters of C2H6O and H2O2. An experimental gas generator installation was established and applied to research the self-i...
The calculating procedure that ethanol (C2H6O) reacting with Hydrogen peroxide (H2O2) was deduced based on chemical theory and characters of C2H6O and H2O2. An experimental gas generator installation was established and applied to research the self-i...
2007,
19.
Abstract:
Using Fourier model method, the near-field distribution of a total interual reflection(TIR) grating with high efficiency was analyzed under the irradiation of different polarized lights. The dependence of electric field enhancement in the TIR grating...
Using Fourier model method, the near-field distribution of a total interual reflection(TIR) grating with high efficiency was analyzed under the irradiation of different polarized lights. The dependence of electric field enhancement in the TIR grating...
2007,
19.
Abstract:
The influences of the thermal deformation of resonator mirrors induced by absorption of laser energy on geometric structure parameters of unstable resonators and intensity distributions of the far field were theoretically analyzed using finite differ...
The influences of the thermal deformation of resonator mirrors induced by absorption of laser energy on geometric structure parameters of unstable resonators and intensity distributions of the far field were theoretically analyzed using finite differ...
2007,
19.
Abstract:
The application of high-speed shadowgraph technology to flow field evolvement diagnosis of laser propulsion is presented. Shadow technology and a high-speed camera are combined to investigate the flow field evolvement. The zero point of the time sequ...
The application of high-speed shadowgraph technology to flow field evolvement diagnosis of laser propulsion is presented. Shadow technology and a high-speed camera are combined to investigate the flow field evolvement. The zero point of the time sequ...
2007,
19.
Abstract:
The limitation of classical adaptive optics and the basic principle of multi-conjugate adaptive optics are briefly introduced. The conjugate heights of single-conjugate and dual-conjugate systems are numerically simulated, and the gains of isoplanati...
The limitation of classical adaptive optics and the basic principle of multi-conjugate adaptive optics are briefly introduced. The conjugate heights of single-conjugate and dual-conjugate systems are numerically simulated, and the gains of isoplanati...
2007,
19.
Abstract:
Silicon atom was obtained by pyrolysis of silane and then reacted with N2O to produce the metastable state storage medium-SiO (b3П). An improved experiment device was set up and the optimal experiment parameters were achieved through plenty of experi...
Silicon atom was obtained by pyrolysis of silane and then reacted with N2O to produce the metastable state storage medium-SiO (b3П). An improved experiment device was set up and the optimal experiment parameters were achieved through plenty of experi...
2007,
19.
Abstract:
An ejector test facility was established to investigate the performance of a multi-nozzle supersonic ejector with a secondary flow. Using the hot rocket exhaust gases as primary and simulated secondary driving fluids, wall static pressure distributio...
An ejector test facility was established to investigate the performance of a multi-nozzle supersonic ejector with a secondary flow. Using the hot rocket exhaust gases as primary and simulated secondary driving fluids, wall static pressure distributio...
2007,
19.
Abstract:
The oscillator utilized a linear(F-P) cavity in which the halfwave plates and polarization splitters were placed to introduce polarization rotation. Combining the self-starting of semiconductor saturable absorber mirror, the passive mode-locked opera...
The oscillator utilized a linear(F-P) cavity in which the halfwave plates and polarization splitters were placed to introduce polarization rotation. Combining the self-starting of semiconductor saturable absorber mirror, the passive mode-locked opera...
2007,
19.
Abstract:
DISORT method was employed to study radiative properties of cirrus clouds in the shortwave infrared spectral region. The properties were shown, as well as their dependence on wavelength, visible optical thickness of cirrus clouds, cloud altitude, the...
DISORT method was employed to study radiative properties of cirrus clouds in the shortwave infrared spectral region. The properties were shown, as well as their dependence on wavelength, visible optical thickness of cirrus clouds, cloud altitude, the...
2007,
19.
Abstract:
Rate equations of passively Q-switched lasers were numerically calculated. The optimization of thermally bonded passively Q-switched lasers was discussed. The effect of key parameters of passively Q-switched lasers such as the initial transmission of...
Rate equations of passively Q-switched lasers were numerically calculated. The optimization of thermally bonded passively Q-switched lasers was discussed. The effect of key parameters of passively Q-switched lasers such as the initial transmission of...
2007,
19.
Abstract:
The thermodynamic quantities (such as the enthalpies of reaction, ΔHr, the Gibbs free energies of reaction, ΔGr and the constant of chemical reaction equilibrium, K) of the gas-solid reaction systems for singlet oxygen generation were calculated thro...
The thermodynamic quantities (such as the enthalpies of reaction, ΔHr, the Gibbs free energies of reaction, ΔGr and the constant of chemical reaction equilibrium, K) of the gas-solid reaction systems for singlet oxygen generation were calculated thro...
2007,
19.
Abstract:
Thermal focal length of an LD side-pumped Nd:YAG laser rod is measured and discussed. The edge-cooled solid-state laser rod pumped uniformly likes a lens. When the parallel beam goes through the rod, its wavefront will be changed and equal to the foc...
Thermal focal length of an LD side-pumped Nd:YAG laser rod is measured and discussed. The edge-cooled solid-state laser rod pumped uniformly likes a lens. When the parallel beam goes through the rod, its wavefront will be changed and equal to the foc...
2007,
19.
Abstract:
In order to double the injection rate of positron beam from the linac to the storage ring of BEPCⅡ, a two-pulse generation and acceleration scheme has been proposed. The two-pulse simulation by programs including LIAR, PARMELA, EGUN and TRANSPORT is ...
In order to double the injection rate of positron beam from the linac to the storage ring of BEPCⅡ, a two-pulse generation and acceleration scheme has been proposed. The two-pulse simulation by programs including LIAR, PARMELA, EGUN and TRANSPORT is ...
2007,
19.
Abstract:
A 750 keV, 201.25 MHz radio frequency quadrupole accelerator was designed as the injector of the Beijing proton linac. The beam dynamics study of this accelerator is described. The main parameters and results of two designs are presented. The influen...
A 750 keV, 201.25 MHz radio frequency quadrupole accelerator was designed as the injector of the Beijing proton linac. The beam dynamics study of this accelerator is described. The main parameters and results of two designs are presented. The influen...
2007,
19.
Abstract:
The formation of hot image in a broadband laser system is numerically studied. It is found that in a broadband system the hot image is, though the same in location, well restrained by the bandwidth and has a peak intensity much smaller when compared ...
The formation of hot image in a broadband laser system is numerically studied. It is found that in a broadband system the hot image is, though the same in location, well restrained by the bandwidth and has a peak intensity much smaller when compared ...
2007,
19.
Abstract:
The influence of electrolyte component on the surface roughness and topography of Ti film has been analyzed. It is found that, the solution of sulfuric acid and methanol is an ideal electrolyte system compared with the other electrolyte systems menti...
The influence of electrolyte component on the surface roughness and topography of Ti film has been analyzed. It is found that, the solution of sulfuric acid and methanol is an ideal electrolyte system compared with the other electrolyte systems menti...
2007,
19.
Abstract:
The Ka absorption spectrum is one of the important methods to determine the temperature of radiation-produced plasmas. The CH-sandwiched aluminum foil, deposited on the back surface of the gold foil, was heated by the X-ray radiation from the laser-i...
The Ka absorption spectrum is one of the important methods to determine the temperature of radiation-produced plasmas. The CH-sandwiched aluminum foil, deposited on the back surface of the gold foil, was heated by the X-ray radiation from the laser-i...
2007,
19.
Abstract:
2D and 3D fractal methods are used to analyze the KDP crystal surfaces machined by SPDT(single point diamond tools) method. The difference between 3D fractal dimension and roughness parameter is analyzed. And 3D fractal dimension has the inverse rati...
2D and 3D fractal methods are used to analyze the KDP crystal surfaces machined by SPDT(single point diamond tools) method. The difference between 3D fractal dimension and roughness parameter is analyzed. And 3D fractal dimension has the inverse rati...
2007,
19.
Abstract:
Using statistical methods and numerical simulation, the far-field description methods for high power ultra-short pulse laser were established. The results show that the percentage of energy in FWHM of the ideal super-Gaussion beam is no more than 70%...
Using statistical methods and numerical simulation, the far-field description methods for high power ultra-short pulse laser were established. The results show that the percentage of energy in FWHM of the ideal super-Gaussion beam is no more than 70%...
2007,
19.
Abstract:
The single-layer SiO2, single-layer ZrO2,two-layer ZrO2/SiO2 and two-layer SiO2/ZrO2 thin films were deposited on K9 glass by Sol-Gel spin-coating method. The colloidal suspension of ZrO2 was prepared using Zr(OPr)4 and colloidal suspension of SiO2 w...
The single-layer SiO2, single-layer ZrO2,two-layer ZrO2/SiO2 and two-layer SiO2/ZrO2 thin films were deposited on K9 glass by Sol-Gel spin-coating method. The colloidal suspension of ZrO2 was prepared using Zr(OPr)4 and colloidal suspension of SiO2 w...
2007,
19.
Abstract:
Some scientists used waveguide as the cavity to produce a plasma jet, while large volume microwave plasma was relatively hard to get in atmospheric pressure. However, a few research institutes have already developed devices to generate large volume o...
Some scientists used waveguide as the cavity to produce a plasma jet, while large volume microwave plasma was relatively hard to get in atmospheric pressure. However, a few research institutes have already developed devices to generate large volume o...
2007,
19.
Abstract:
LaF3 single-layer coatings were prepared by thermal boat evaporation at the deposition temperatures of 189, 255, 277 and 321 ℃ respectively. The crystal structures of the coatings were characterized by X-ray diffraction(XRD). A spectrophotometer was ...
LaF3 single-layer coatings were prepared by thermal boat evaporation at the deposition temperatures of 189, 255, 277 and 321 ℃ respectively. The crystal structures of the coatings were characterized by X-ray diffraction(XRD). A spectrophotometer was ...
2007,
19.
Abstract:
Planar beams can generate high-power radiation in device like sheet-beam klystrons at high-frequency range. Electron optics system is the key part of the sheet beam klystron. Two-plane Wiggler focusing principle is illustrated in this paper. Elliptic...
Planar beams can generate high-power radiation in device like sheet-beam klystrons at high-frequency range. Electron optics system is the key part of the sheet beam klystron. Two-plane Wiggler focusing principle is illustrated in this paper. Elliptic...
2007,
19.
Abstract:
The optical and electrical signals of lightning discharges were measured simultaneously by using the wide-band electric field instrument and the optical ripple detector at Conghua city Guangdong province in summer, 2006. The observation data were ana...
The optical and electrical signals of lightning discharges were measured simultaneously by using the wide-band electric field instrument and the optical ripple detector at Conghua city Guangdong province in summer, 2006. The observation data were ana...
2007,
19.
Abstract:
Based on the transmission line approximation, three different equivalent coupling formulations (by Taylor et al., by Agrawal et al. and by Rachidi, resoectively) are been proposed for evaluating the interaction between an external electromagnetic fie...
Based on the transmission line approximation, three different equivalent coupling formulations (by Taylor et al., by Agrawal et al. and by Rachidi, resoectively) are been proposed for evaluating the interaction between an external electromagnetic fie...
2007,
19.
Abstract:
This article puts forward a numerical method which could compute dispersion curves in an arbitrary axial-symmetric tapered quasi-periodic slow-wave structure, based on field-matching method and Fourier series theory. Using this numerical method, the ...
This article puts forward a numerical method which could compute dispersion curves in an arbitrary axial-symmetric tapered quasi-periodic slow-wave structure, based on field-matching method and Fourier series theory. Using this numerical method, the ...
2007,
19.
Abstract:
HfO2 films have been deposited by dual-ion beam sputtering technology with starting material Hf. Optical, residual stress, structural properties and laser-induced damage threshold of the HfO2 films have been studied. It is found that the HfO2 shows u...
HfO2 films have been deposited by dual-ion beam sputtering technology with starting material Hf. Optical, residual stress, structural properties and laser-induced damage threshold of the HfO2 films have been studied. It is found that the HfO2 shows u...
2007,
19.
Abstract:
The micro sub-surface cracks of fused silica are observed by AFM and optical microscope. Due to the morphology characters, the cracks are sorted into three types: Boussinesq-point-force crack(BPFC), Hertzian-conical scratch(HCS) and plastic indent(PI...
The micro sub-surface cracks of fused silica are observed by AFM and optical microscope. Due to the morphology characters, the cracks are sorted into three types: Boussinesq-point-force crack(BPFC), Hertzian-conical scratch(HCS) and plastic indent(PI...
2007,
19.
Abstract:
A relativistic distorted-wave approximation is used to calculate the autoionization rates and dielectronic capture strengths for Cu-like Pb ion. The calculated results show that autoionization rates varies regularly with the effect of spectator elect...
A relativistic distorted-wave approximation is used to calculate the autoionization rates and dielectronic capture strengths for Cu-like Pb ion. The calculated results show that autoionization rates varies regularly with the effect of spectator elect...
2007,
19.
Abstract:
With ZrO2 and AlCl2Pc/SiO2 as high and low refractive index materials respectively, the high reflective film of 21 layers was deposited on well-cleaned polycarbonate substrate via sol-gel process. The film was designed as l0/6-l0/3 typed periodic sym...
With ZrO2 and AlCl2Pc/SiO2 as high and low refractive index materials respectively, the high reflective film of 21 layers was deposited on well-cleaned polycarbonate substrate via sol-gel process. The film was designed as l0/6-l0/3 typed periodic sym...
2007,
19.
Abstract:
In the early stage of UV excimer laser ablation of semiconductor, plasma induced by laser ablation was assumed at local thermodynamic equilibrium. One-dimension hydrodynamic model is presented for the laser ablation of Ge in a background gas (He) at ...
In the early stage of UV excimer laser ablation of semiconductor, plasma induced by laser ablation was assumed at local thermodynamic equilibrium. One-dimension hydrodynamic model is presented for the laser ablation of Ge in a background gas (He) at ...
2007,
19.
Abstract:
Principle and method to simulate pulse forming net(PFN) were expatiated from the viewpoint of wave process. The method can simulate PFN with temporal circuit parameters as well as pulsed power system with MITL, switch, implosion plasma. The high fide...
Principle and method to simulate pulse forming net(PFN) were expatiated from the viewpoint of wave process. The method can simulate PFN with temporal circuit parameters as well as pulsed power system with MITL, switch, implosion plasma. The high fide...
2007,
19.
Abstract:
The configuration, pulse forming line section and experimental results of a pulse power machine were introduced. The insulative inspection of pulse forming line, the jitter of lasertriggered switch, the jitter of output switch and the jitter of the ...
The configuration, pulse forming line section and experimental results of a pulse power machine were introduced. The insulative inspection of pulse forming line, the jitter of lasertriggered switch, the jitter of output switch and the jitter of the ...
2007,
19.
Abstract:
A 40 kV/6 kA pulsed power supply was designed for the rapid cycling synchrotron(RCS) extraction Kicker magnet of Chinese Spallation Neutron Source. The calculation of the pulsed power supply’s parameters, the design of power supply’s system, the opti...
A 40 kV/6 kA pulsed power supply was designed for the rapid cycling synchrotron(RCS) extraction Kicker magnet of Chinese Spallation Neutron Source. The calculation of the pulsed power supply’s parameters, the design of power supply’s system, the opti...
2007,
19.
Abstract:
The radiation effects of L band microwave pulses with a carrier frequency at 1.3 GHz on a personal computer motherboard are studied in this paper. Microwave pulse power thresholds are achieved in experiments with different pulse parameters, such as p...
The radiation effects of L band microwave pulses with a carrier frequency at 1.3 GHz on a personal computer motherboard are studied in this paper. Microwave pulse power thresholds are achieved in experiments with different pulse parameters, such as p...
