2015 Vol. 27, No. 08

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Research on power measurement method of fiber laser based on Fresnel scattering
Ran Huanhuan, Pan Xudong, Li Tenglong, Wang Yu, Li Xu
2015, 27: 081001. doi: 10.11884/HPLPB201527.081001
Abstract:
The Fresnel reflection light model of fiber splicing point was analyzed, and it was concluded that there is a linear relationship between the scattered light power of splicing point and output optical power. The oscillator and pump source power detec...
3D finite volume method simulation on melt removal effects of metal plate under laser irradiation
Zhang Jialei, Tan Fuli, Liu Cangli, Wang Weiping
2015, 27: 081002. doi: 10.11884/HPLPB201527.081002
Abstract:
In order to investigate the melt removal effects of the metal plate under laser irradiation, a three-dimensional thermal model based on finite volume method(FVM) was constructed. The model employs a database of material properties, such as the heat c...
Oxygen absorption factors of target radiation and interference targets reflection spectra
Zhang Yu, Liu Bingqi, Yan Zongqun, Hua Wenshen, Li Xiaoming, Liu Shiying, Liu Yuan
2015, 27: 081003. doi: 10.11884/HPLPB201527.081003
Abstract:
In order to analyze the spectral characteristics of the reflected sun light by different targets, research the ways to reduce disturbance in passive ranging, using spectrometer as measuring equipment, 200 W tungsten halogen lamp as simulated target, ...
Design of angular multiplexing decoding optical path for high power excimer laser system
Hu Yun, Zhao Xueqing, Wang Dahui
2015, 27: 081004. doi: 10.11884/HPLPB201527.081004
Abstract:
According to angular multiplexing technique, a multiplexing decoding method is presented. In this method, multiplexing decoding is achieved by two steps: in the first step the beams between the layers are decoded, and in the second step the beams in ...
Energy extraction study on XeCl excimer laser
Xue Quanxi, Zhao Xueqing, Hu Yun, Wang Dahui, Zhang Yongsheng, Yi Aiping, Liu Jingru
2015, 27: 081005. doi: 10.11884/HPLPB201527.081005
Abstract:
Achieving pulse compression and high energy is significant in the construction of an excimer laser angular multiplexing system. The laser pulse profile and energy extraction efficiency were studied changing the input seed intensity. An excimer laser ...
Kinetic simulation of discharge excited ArF excimer laser and parameter analysis
Luo Shiwen, Zuo Duluo, Wang Xinbing
2015, 27: 081006. doi: 10.11884/HPLPB201527.081006
Abstract:
A one-dimensional fluid model is used to investigate the kinetics of discharge excited ArF excimer laser. Voltage-current waveforms of the gas discharge process coupling with the discharge circuit are obtained. Temporal-spatial evolution of electron ...
Ultrafast dynamics of carriers in cadmium selenide
Zhang Jian, Yi Tao, Liu Shenye, Jiang Shaoen, Yang Weiming, Wu Xingzhi, Fang Yu, Song Yinglin
2015, 27: 081007. doi: 10.11884/HPLPB201527.081007
Abstract:
Cadmium selenide can be used in the all optical framing camera and streak camera for ultrafast X-ray detection. Based on time-resolved pumping system with phase object, we studied the nonlinear properties of bulk cadmium selenide at 1030 nm under fem...
Double microring resonator coupled dual-wavelength semiconductor lasers
Li Jun, Shen Xiang, Wang Guoxiang, Dai Shixun, Xu Tiefeng, Nie Qiuhua
2015, 27: 081008. doi: 10.11884/HPLPB201527.081008
Abstract:
A novel monolithically integrated double microring resonator coupled dual-wavelength semiconductor laser is proposed. Two microring resonators incorporated in the laser cavity are used as the strong mode-selection filters to select the resonance mode...
1064 nm nanosecond laser induced damage effect on graphene
Wu Lingyuan, Li Yanglong, Liu Guodong, Wang Weiping
2015, 27: 081009. doi: 10.11884/HPLPB201527.081009
Abstract:
The mono-bi-and trilayer graphene samples were prepared by chemical vapor deposition method and transferred to substrate. Damage effect of the graphene under 1064 nm nanosecond laser irradiation was quantified by taking Hall Effect and Raman spectra ...
Surface discharge optical pumping source for XeF blue-green laser
Huang Chao, Liu Jingru, Yu Li, Yi Aiping, An Xiaoxia, Zhu Feng, Shen Yanlong
2015, 27: 081010. doi: 10.11884/HPLPB201527.081010
Abstract:
The surface discharge optical pumping source is a key unit of high power XeF blue-green laser with pulse repetition mode. To increase the lifetime of the high power XeF blue-green laser, it is very important to develop a kind of surface discharge opt...
Theoretical study of the chaos effect of laser induced by the third order nonlinear effect
Guo Huaiwen, Huang Xiaoxia, Zhang Fan, Wang Yuancheng, Zhou Wei, Deng Xuewei, Hu Dongxia, Jing Feng
2015, 27: 081011. doi: 10.11884/HPLPB201527.081011
Abstract:
The third order nonlinearities in optical materials could induce chaos of the optical field when the material characteristic and laser parameters satisfy some special requirements. In this paper, we start from the Maxwell equations, derive the Maxwel...
An ion-electron non-equilibrium model for relaxing central hot-spot ignition conditions
Fan Zhengfeng, Liu Jie, Liu Bin, Yu Chengxin, He Xiantu
2015, 27: 082001. doi: 10.11884/HPLPB201527.082001
Abstract:
This paper presents an ion-electron non-equilibrium model for relaxing the central hot-spot ignition conditions in inertial confinement fusion. The model emphasizes that the hot-spot ion temperature is higher than its electron temperature, so that th...
Precision voltage-controlled constant current source for atomic oxygen ground simulation equipment
Cao Fei, Cheng Jian, Pan Zeyue, Chen Yuanyuan
2015, 27: 082002. doi: 10.11884/HPLPB201527.082002
Abstract:
In atomic oxygen ground simulation equipment, a current source is used to constrain the emittance of atomic oxygen by utilizing magnetic mirror effect. The current source is also used to calibrate the atomic oxygen parameter measuring instruments. A ...
Fabrication and absolute calibration of X-ray streak camera cathode
Li Jin, Hu Xin, Fan Long, Chen Tao, Yang Zhiwen, Deng Bo, Li Yukun, Cao Zhurong, Liu Shenye
2015, 27: 082003. doi: 10.11884/HPLPB201527.082003
Abstract:
In order to improve performance of the X-ray streak camera cathode, we propose a new fabrication method of X-ray streak camera cathode, the benefit of this method is that the thickness of the substrate film using polycarbonate as raw material can be ...
Study of ultrafine Ni80Cr20 alloy wire corrosion-head and through-die technology in cold drawing
Qi Yidong, Zhou Xiuwen, Cao Linhong, Liu Xudong, Wu Weidong
2015, 27: 082004. doi: 10.11884/HPLPB201527.082004
Abstract:
The ultrafine Ni80Cr20 alloy wire was prepared by cold drawing technology. To improve the through-die efficiency in ultrafine Ni80Cr20 alloy wire preparation, we explored a new ultrafine wire corrosion-head and through-die method, by which an electro...
Self-supported CsI/PC membrane and its photoelectric conversion property
Li Yukun, Fan Long, Chen Tao, Deng Bo, Li Jin, Deng Keli, Hu Xin
2015, 27: 082006. doi: 10.11884/HPLPB201527.082006
Abstract:
A self-supported PC membrane was prepared through chemical vapor deposition process, and CsI was evaporated onto PC surface. Then a large-area self-supported CsI/PC membrane was prepared. The thickness of PC membrane was 300 nm, and that of CsI membr...
Quasi-one-dimensional implosion performance in D-D filled capsule based on pure shock yield mechanism
Yan Ji, Zheng Jianhua, Zhang Xing, Ge Fengjun, Kang Dongguo, Yuan Yongteng, Chen Li, Song Zifeng, Jiang Wei, Yu Bo, Chen Bolun, Pu Yudong, Huang Tianxuan
2015, 27: 082007. doi: 10.11884/HPLPB201527.082007
Abstract:
The D-D filled capsule implosion experiment is performed on Shenguang Ⅲ prototype laser facility. One-dimensional hydrodynamic numerical simulations show that neutron yield mechanism can be controlled by different D-D gas pressure and CH shell thickn...
Numerical simulation of non-linear transmission line
Liao Yong, Xu Gang, Xie Ping, Shi Xiaoyan, Lu Wei, Ding Enyan, Yang Zhoubing, Meng Fanbao
2015, 27: 083001. doi: 10.11884/HPLPB201527.083001
Abstract:
This paper deals with the numerical simulation of magnetic nonlinear transmission line(NLTL) with cross-linking element. The simulation is based on the iteration of voltage and current in NLTL element which is described in the time-domain differentia...
Efficiency of microwave combination with normal phase error
Jiang Tingyong, Ning Hui, Shao Hao, Liu Xiaolong, Geng Baogang
2015, 27: 083002. doi: 10.11884/HPLPB201527.083002
Abstract:
With the background of research on high power microwave source power combined efficiency with random phase, the impact of random phase errors with normal probability distribution on power combined efficiency of antenna array was calculated. A modifie...
Effect of random corrugation errors on reflection characteristics of coaxial Bragg structure with rectangular ripples
Lai Yingxin, Wei Xilin, Wang Shanjin, Zhang Shichang
2015, 27: 083003. doi: 10.11884/HPLPB201527.083003
Abstract:
By using the mode-matching method, a theoretical model is presented to analyze the reflection characteristics of the coaxial Bragg structures corrugated with rectangular ripples, where the inner-rod and outer-wall ripples have random parameters due t...
Interference effects of repetitive ultra-wideband pulses on low noise amplifier
Yang Meng, Ning Hui, Zhang Yongdong, Du Zhengwei
2015, 27: 083004. doi: 10.11884/HPLPB201527.083004
Abstract:
Based on the results of the theoretical analyses and simulations, the relationship between the Gaussian pulse parameters (pulse width, pulse amplitude, pulse repetition frequency) and the interference effects on a low noise amplifier (LNA) is discuss...
Simulation on W-band sheet beam rectangular waveguide grating backward-wave oscillator
Wang Zhanliang, Xu Xiong, Gong Yubin, Duan Zhaoyun, Wei Yanyu, Gong Huarong, Huang Hua
2015, 27: 083005. doi: 10.11884/HPLPB201527.083005
Abstract:
The vacuum electronic device with sheet beam driven rectangular waveguide gratings is a small size, high gain, easy to fabricated device. It has potential to produce high power terahertz radiation. This paper proposes a novel sheet beam high power de...
Electromagnetic energy coupling analysis of radome over lossy half space under high power microwave
Cao Le, Wei Bing, Zhu Xiangqin
2015, 27: 083006. doi: 10.11884/HPLPB201527.083006
Abstract:
In this paper, the reflected wave of a lossy half space is computed by using the combination of Fourier transform and Fresnel formula, and it is introduced to finite difference time domain method (FDTD) calculation region by Equivalence Principle. Th...
Design of Ka band sheet beam relativistic extended interaction oscillator
Liu Zhenbang, Lei Lurong, Huang Hua, Jin Xiao, Yuan Huan
2015, 27: 083007. doi: 10.11884/HPLPB201527.083007
Abstract:
The sheet beam relativistic extended interaction oscillator is a very important high power microwave source with many actual and potential applications. Based on the electromagnetic simulation software and 3D PIC code, a Ka-band sheet beam relativist...
Design, fabrication and characterization of a sheet-beam 140 GHz folded waveguide based on multi-step SU-8 UV-LIGA
Xie Fuqiang, Ding Guifu, Zhao Xiaolin, Cheng Ping
2015, 27: 083101. doi: 10.11884/HPLPB201527.083101
Abstract:
The dispersion property and interaction impedance of a novel sheet-beam 140 GHz folded waveguide was simulated. By CST Microwave Studio, the phase velocity was 0.227c and the dispersion remained flat when the frequency was 140 GHz. The interaction im...
Design and experiment of cyclic olefin copolymer based 2.5 THz hollow-core photonic crystal fiber
Chen Qi, Zhu Wenjing, He Xiaoyang, Kong Depeng, Miao Jing, Luo Zhenfei, Zhou Xun, Yang Chun, Zhang Jian, Zhou Chuanming
2015, 27: 083102. doi: 10.11884/HPLPB201527.083102
Abstract:
Efficient transmission of terahertz (THz) wave is an important research direction in development of THz technology. Polymeric photonic crystal fiber (PCF) is ideal in THz waveguide transmission because of the advantages of low loss, low dispersion an...
Simulation computation and analytic modification of characteristic impedance of parallel-plate transmission line
Du Leiming, Xie Yanzhao, Wang Shaofei
2015, 27: 083201. doi: 10.11884/HPLPB201527.083201
Abstract:
Based on time domain reflection theory, a novel way to calculate the characteristic impedance of a parallel-plate transmission line is proposed. With CST microwave studio, a simulation model is established to calculate the accurate value of the chara...
Radar ground clutter statistical characteristics simulation in reverberation chamber
Liang Yuying, Tu Peng, Han Zhuangzhi, Li Jiacheng, Xie Xin
2015, 27: 083202. doi: 10.11884/HPLPB201527.083202
Abstract:
In order to achieve an effective simulation for Weibull distribution clutter and create a realistic radar environment, a simulation method for ground clutter in a reverberation chamber based on time-domain waveform design is proposed. This method is ...
Equivalent circuit for research on crosstalk of transmission lines above lossy ground
Yang Qingxi, Wang Qingguo, Zhou Xing, Zhao Min, Zhang Yongqiang
2015, 27: 083203. doi: 10.11884/HPLPB201527.083203
Abstract:
To investigate the coupling mechanism between an electromagnetic pulse and a transmission line above the lossy ground, we built an equivalent circuit for the transmission lines above the lossy ground based on the delay extraction-based passive compac...
Parallel computing of finite difference algorithm for parabolic equation based on JASMIN and its application
Zhang Qinghong, Liao Cheng, Li Hanyu, Zhou Haijing, Liu Qiang, Sheng Nan
2015, 27: 083204. doi: 10.11884/HPLPB201527.083204
Abstract:
The computation speed will decrease dramatically in solving the radio wave propagation problems in urban cells for the reason that the grid step of finite difference algorithm for parabolic equation is strictly restricted by wavelength. To solve this...
Numerical simulation of lightning indirect effects on helicopter
Huang Liyang, Chen Xiaoning, Guo Fei, Zhang Bin, Chen Peng
2015, 27: 083205. doi: 10.11884/HPLPB201527.083205
Abstract:
To improve the protection performance of the helicopter against lightning, this paper builds a simulation environment in the CST Microwave Studio based on the transmission-line matrix method to simulate the UH-60 helicopter struck by high current pul...
Hybrid method to calculate response of transmission lines in double-layer shielding cavity with apertures
Gao Xuelian, Zhao Lei, Jin Fang, Ma Shijie, Li Dan
2015, 27: 083206. doi: 10.11884/HPLPB201527.083206
Abstract:
In order to make it work well under complex electromagnetic environments, the electronic system is usually required to be installed in the shutter. However, for the ventilation and heat dissipation, it is inevitable to make some tiny apertures on the...
Application of a streak camera to diagnosis of plasma in vacuum arc ion source
Tang Jian, Lu Biao, Wu Chunlei, Deng Chunfeng, Hu Yonghong, Wen Zhongwei
2015, 27: 084001. doi: 10.11884/HPLPB201527.084001
Abstract:
In order to study the vacuum arc ion source, using a streak camera which could transform the temporal signal to spatial signal, and a spectrograph which could separate an incoming wave into a frequency spectrum, we built a time resolution of plasma o...
Analysis of single event effect induced by neutron with TCAD
Xie Lei, Dai Gang, Li Shun, Liang Kun
2015, 27: 084002. doi: 10.11884/HPLPB201527.084002
Abstract:
In the case of nuclear fission and fusion, typical energy neutrons acting on semiconductor devices are analyzed, and the distribution of the secondary particles and their energy spectra are generated. As for the worst case of the neutron, the single ...
Design and implementation of 5 MW neutral beam injection arc power supply DC/DC converter
Yang Puqiong, Xuan Weimin, Zhang Ying, Li Qing
2015, 27: 084003. doi: 10.11884/HPLPB201527.084003
Abstract:
The arc discharge of ion source in neutral beam injection has the nonlinear characteristic of gas discharge plasma, and this high-power electric arc is influenced by the gas pressure, outside magnetic field and state of cathode in the process of disc...
Monte Carlo simulations of microstructured semiconductor neutron detectors with trench patterns
Wu Jian, Gan Lei, Jiang Yong, Li Junjie, Li Meng, Zou Dehui, Fan Xiaoqiang
2015, 27: 084004. doi: 10.11884/HPLPB201527.084004
Abstract:
Microstructured neutron detectors (MSNDs) can achieve a tenfold increase in neutron detection efficiency over the traditional planar detectors. However, the overall detection efficiency is determined by their microstructured features. In this work, w...
Effects of pressure on the pulsed magnetic confinement linear hollow cathode discharge
Xia Junming, Sun Hailong, Huo Wenqing, Xu Yuemin, Sun Yueqiang, Bai Weihua, Liu Congliang, Meng Xiangguang
2015, 27: 084005. doi: 10.11884/HPLPB201527.084005
Abstract:
Large planar plasma sheets with size of 60 cm60 cm, maximum current of 3 A and duration of 200 s, were obtained in a pulsed linear hollow cathode discharge device under 15 mT magnetic field confinement. The electron density 2-D distribution in the th...
Removal of impulse noise of anti-scatter grided images with modified switching median filters
Jing Yuefeng, Guan Yonghong, Liu Jun
2015, 27: 084006. doi: 10.11884/HPLPB201527.084006
Abstract:
For the images obtained by the flash radiography with an anti-scatter grid, impulse noises exist and need to be removed before further image processing. An improved switching median filter method is proposed in this paper for the task. In the method,...
Design and application of 45 kHz, 2 kV electro-optic modulator
Chen Wei, Liang Hao, Liao Shengkai, Xu Yu, Peng Chengzhi
2015, 27: 085001. doi: 10.11884/HPLPB201527.085001
Abstract:
According to the DPS-QKD (differential phase shift quantum key distribution) experiment demand for high-speed electro-optic modulator, the solid state switching technology and transformer isolation technology were applied to the design of a high spee...
Linear unstable effect on shaped-charge jet under axial pulse current
Qi Wenda, Lei Bin, Li Zhiyuan, Xiang Hongjun, Yuan Xichao
2015, 27: 085002. doi: 10.11884/HPLPB201527.085002
Abstract:
To improve the capability of passive electromagnetic armor against shaped charge jet (SCJ), the linear perturbation control equation of SCJ under the axial pulse current is constructed by magneto hydrodynamic instability theory and superposition theo...
Vacuum control system of the injector Ⅱ for accelerator driven sub-critical system
Jiang Ziyun, Zhang Peng, Niu Xiaofei, Guo Xiaohong, Zhang Junhui, He Yuan
2015, 27: 085101. doi: 10.11884/HPLPB201527.085101
Abstract:
Vacuum system is one of the most important subsystems of the injector Ⅱ for accelerator driven sub-critical system (ADS), whose performance determines the quality of the injectors beam. A remote control system based on the Experimental and Physics In...
Alignment of high energy line for Wuwei Heavy Ion Medical Machine
Chen Wenjun, Ma Lizhen, Cai Guozhu, Cui Zhiguo, Wang Shaoming, Zhang Xiaoqi, Hua Yongping, Yuan Jiandong, Chai Yiliang, Li Yuchun
2015, 27: 085102. doi: 10.11884/HPLPB201527.085102
Abstract:
The high energy climbing segment of the Wuwei Heavy Ion Medial Machine has a vertical span of about 18 meters. Due to the suspended installation of oversized and overweighted components, the small installation space and lack of straight sight conditi...
SLED phase reverse system based on FPGA
Liu Yongtao, Huang Guirong, Shang Lei, Lin Hongxiang, Li Chao, Zhao Zhouyu, Du Baiting
2015, 27: 085103. doi: 10.11884/HPLPB201527.085103
Abstract:
This paper introduces the phase reverse system designed for SLAC Energy Doubler (SLED) based on Field Programmable Gate Array (FPGA). The phase reverse system is composed of a microwave IQ vector modulator, a FPGA board with the high speed DAC unit. ...
Theoretical study and simulation of head-on beam-beam compensation
Guo Yuanyuan, Xu Gang, Zhang Yuan
2015, 27: 085104. doi: 10.11884/HPLPB201527.085104
Abstract:
Beam-beam effect is a main factor limiting the performance of colliders. The limitation may be alleviated by compensation techniques. We proposed two types of head-on beam-beam compensation schemes with four beams and analyzed the principle of these ...
Evolution of plasma sheath in pulsed ion beam extractions
Ke Jianlin, Zhou Changgeng
2015, 27: 085105. doi: 10.11884/HPLPB201527.085105
Abstract:
A 1D dynamic sheath model of collisionless plasma is used to calculate the change of sheath edge with time. The calculation is performed for short duration pulses and long duration pulses respectively. For short duration pulses, the plasma sheath edg...
Development of RFQ power source for ADS injector I
Zhou Zusheng, He Dayong, Liu Rong, Chi Yunlong
2015, 27: 085106. doi: 10.11884/HPLPB201527.085106
Abstract:
The Accelerator Driven Subcritical System (ADS), using proton beam hitting on the target to produce neutron for spending fuel stable increment or accelerating evolution, aims at finding key solutions for nuclear fuel stable provision and for the safe...
Approximate analytical solutions of the electrostatic potential inside semiconductor caused by radiation-induced net positive oxide charge
Bai Xiaoyan, Chen Wei, Lin Dongsheng, Wang Guizhen, Liu Yan, Jin Xiaoming, Yang Shanchao, Li Ruibin
2015, 27: 086001. doi: 10.11884/HPLPB201527.086001
Abstract:
This paper presents the analytical relation between the electrostatic potential inside the semiconductor and the positive oxide trapped charge at the interface. The expressions for N/P type materials are deduced after the accumulation/depletion appro...
Rapid interpolation calculation method based on physical rules with MCNP simulation results
Mu Weibing, Zheng Peng, Shi Zhengjun, Liu Jianbo
2015, 27: 086002. doi: 10.11884/HPLPB201527.086002
Abstract:
MCNP calculations are frequently used to analyze a variety of radiological science applications. This study tries to develop a rapid calculation method evaluating the value nearby where values of 3 points have been calculated with MCNP code. Firstly ...
Experimental research on dynamics and stability of liquid film flow by confocal microscopy
Li Hua, Zhang Youjia, Zhang Lin, Huang Hongwen
2015, 27: 086003. doi: 10.11884/HPLPB201527.086003
Abstract:
The performance of boiling devices is limited by boiling crisis (burnout and dryout) characterized by the critical heat flux (CHF). The implementation of some related study is a key step for deeply understanding the mechanism of CHF and its enhanceme...
Effect of laser shock processing on residual stress of strain steel welded joints
Ma Bang, Zhang Jin, Chen Zhimin
2015, 27: 089001. doi: 10.11884/HPLPB201527.089001
Abstract:
There exists residual tensile stress in the stainless steel welded joints, which makes the stainless steel welded joints sensitive to stress corrosion cracking. Laser shock processing is used to treat stainless steel welded joints. The effect of lase...
Inflow mass capture control of hypersonic inlet by pulsed laser energy
Li Qian, Zhao Wei, Wang Diankai, Fang Juan
2015, 27: 089002. doi: 10.11884/HPLPB201527.089002
Abstract:
Aiming at the problem that the inflow mass capture ratio decreases when the hypersonic inlet is under the undesigned state, a physical model is established and numerical simulation is performed on inflow mass capture control by laser energy depositio...
Microstructure and application of conductive carbon black
Chen Bo, Gu Zhongtao
2015, 27: 089003. doi: 10.11884/HPLPB201527.089003
Abstract:
The microstructures of acetylene carbon black, byproduct carbon black and furnace conductive carbon black were systematically investigated and the internal relationship between microstructure and application performance was explored to provide a guid...
Scattering effect of particles irradiated by ultrashort laser
Zhong Jinbo, Li Ling
2015, 27: 089004. doi: 10.11884/HPLPB201527.089004
Abstract:
The light intensity distribution of two nanoparticles irradiated by ultrashort laser is studied. A procedure based on Mie scattering theory and Monte Carlo method is built to simulate and trace the trajectories of photons. Mie scattering theory is ma...
Yang Hang, He Jianguo, Huang Wen, Zhang Yunfei
2015, 27: 082005. doi: 10.11884/HPLPB201527.082005
2015, 27: 080000.