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RSS2021 Vol. 33, No. 2
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2021,
: 1-3.
2021,
33: 021001.
doi: 10.11884/HPLPB202133.200309
Abstract:
To enhance the thresholds of both stimulated Raman scattering and transverse mode instability, we proposed a novel active Yb-doped fiber with a spindle-shaped core and inner-cladding. An all-fiber main oscillator power amplifier (MOPA) was experiment...
2021,
33: 021002.
doi: 10.11884/HPLPB202133.200305
Abstract:
An all-fiber supercontinuum generation system is built based on a long tapered photonic crystal fiber with small core diameter, large duty cycle and gragual core change. The system uses high power picoseconds seed source pumping to achieve 314.7 W hi...
Experimental investigation of the package of diode laser chip based on lateral heat flow suppression
2021,
33: 021003.
doi: 10.11884/HPLPB202133.200241
Abstract:
To improve slow axis beam quality of diode laser (LD) and decrease slow axis divergence angle, a new package with lateral heat flow suppression was designed utilizing the difference in thermal conductivity between air and heat sink. The finite elemen...
To improve slow axis beam quality of diode laser (LD) and decrease slow axis divergence angle, a new package with lateral heat flow suppression was designed utilizing the difference in thermal conductivity between air and heat sink. The finite elemen...
2021,
33: 021004.
doi: 10.11884/HPLPB202133.200242
Abstract:
Structured light technology is a typical method for capturing the three-dimensional point cloud data of realistic objects. Structured light images are projected on the surface of the object, which are modulated by the height of the object. Then, the ...
Structured light technology is a typical method for capturing the three-dimensional point cloud data of realistic objects. Structured light images are projected on the surface of the object, which are modulated by the height of the object. Then, the ...
2021,
33: 021005.
doi: 10.11884/HPLPB202133.200182
Abstract:
To realize of passive-cooling high power fiber cladding light stripper, it is important to optimize the thermal management of both the fiber and the package. By using Teflon capillaries to make segmental etching configuration on fiber, using copper a...
To realize of passive-cooling high power fiber cladding light stripper, it is important to optimize the thermal management of both the fiber and the package. By using Teflon capillaries to make segmental etching configuration on fiber, using copper a...
2021,
33: 021006.
doi: 10.11884/HPLPB202133.200181
Abstract:
High power double cladding fiber Bragg grating (FBG) fabrication based on ultraviolet laser and phase mask method was introduced. A pair of chirped FBGs with 1080 nm central wavelength was made. The reflection spectrum bandwidths were 2 nm and 1 nm, ...
High power double cladding fiber Bragg grating (FBG) fabrication based on ultraviolet laser and phase mask method was introduced. A pair of chirped FBGs with 1080 nm central wavelength was made. The reflection spectrum bandwidths were 2 nm and 1 nm, ...
2021,
33: 022001.
doi: 10.11884/HPLPB202133.200200
Abstract:
The pulse power device will produce a strong electromagnetic environment in the process of discharge, which interferes with diagnostic systems in the experiment, leading to their failure to work properly. By selecting, transforming and delaying the t...
The pulse power device will produce a strong electromagnetic environment in the process of discharge, which interferes with diagnostic systems in the experiment, leading to their failure to work properly. By selecting, transforming and delaying the t...
2021,
33: 023001.
doi: 10.11884/HPLPB202133.200257
Abstract:
High-power waveguide window is a critical component of high-power klystron and accelerator. The RF breakdown of the waveguide window always cause the failure of the high-power klystron. In this paper, the research progress of high-power waveguide win...
2021,
33: 023002.
doi: 10.11884/HPLPB202133.200252
Abstract:
High power helical array antenna fed from planar waveguide is a new type antenna to realize the directional radiation of circularly polarized microwave, which works in C-band. The complexity and the height of the feed structure are reduced by using t...
High power helical array antenna fed from planar waveguide is a new type antenna to realize the directional radiation of circularly polarized microwave, which works in C-band. The complexity and the height of the feed structure are reduced by using t...
2021,
33: 023003.
doi: 10.11884/HPLPB202133.200233
Abstract:
The effect of plasma on the transmission properties of electromagnetic waves and its application have always been one of the key research directions of electromagnetic theory and technology and plasma physics. The enhancement effect of collisional pl...
The effect of plasma on the transmission properties of electromagnetic waves and its application have always been one of the key research directions of electromagnetic theory and technology and plasma physics. The enhancement effect of collisional pl...
2021,
33: 023004.
doi: 10.11884/HPLPB202133.200206
Abstract:
At present, China’s Q/V band low orbit satellite internet project is being vigorously carried out, broadband communications are gradually developing. But the domestic linearization technology is generally limited to narrow band, the related research ...
At present, China’s Q/V band low orbit satellite internet project is being vigorously carried out, broadband communications are gradually developing. But the domestic linearization technology is generally limited to narrow band, the related research ...
2021,
33: 023005.
doi: 10.11884/HPLPB202133.200198
Abstract:
Based on the consideration of power capacity and aperture matching to extend the low-frequency operating bandwidth, an ultra-wideband TEM horn antenna with a distributed impedance end-loading structure was designed. First, the gradual coaxial-flat ba...
Based on the consideration of power capacity and aperture matching to extend the low-frequency operating bandwidth, an ultra-wideband TEM horn antenna with a distributed impedance end-loading structure was designed. First, the gradual coaxial-flat ba...
2021,
33: 023006.
doi: 10.11884/HPLPB202133.200153
Abstract:
For the application requirements of high integration and high selectivity of balanced filters, this paper proposes a novel balanced tri-band filter with high selectivity, which is based on an improved asymmetric stepped impedance resonator structure ...
For the application requirements of high integration and high selectivity of balanced filters, this paper proposes a novel balanced tri-band filter with high selectivity, which is based on an improved asymmetric stepped impedance resonator structure ...
2021,
33: 023007.
doi: 10.11884/HPLPB202133.200149
Abstract:
The interaction between space plasma and spacecraft results into the onset of spacecraft surface charging and the resultant electrostatic discharging events. The computation of spacecraft surface charging is commonly accomplished using the secondary ...
The interaction between space plasma and spacecraft results into the onset of spacecraft surface charging and the resultant electrostatic discharging events. The computation of spacecraft surface charging is commonly accomplished using the secondary ...
2021,
33: 024001.
doi: 10.11884/HPLPB202133.200216
Abstract:
Vertical tests are very important for superconducting cavity after its post-processing. The aim is to obtain the quality factor versus accelerating gradient curve to evaluate a cavity’s performance. Because of its narrow bandwidth, the superconductin...
Vertical tests are very important for superconducting cavity after its post-processing. The aim is to obtain the quality factor versus accelerating gradient curve to evaluate a cavity’s performance. Because of its narrow bandwidth, the superconductin...
2021,
33: 024002.
doi: 10.11884/HPLPB202133.200162
Abstract:
Hybrid bunching-accelerating structure (HBaS) is a novel RF structure integrating a standing-wave(SW) pre-buncher (PB), a traveling-wave (TW) buncher (B) and a standard accelerating structure together. This paper presents the design results, includin...
Hybrid bunching-accelerating structure (HBaS) is a novel RF structure integrating a standing-wave(SW) pre-buncher (PB), a traveling-wave (TW) buncher (B) and a standard accelerating structure together. This paper presents the design results, includin...
2021,
33: 024003.
doi: 10.11884/HPLPB202133.200197
Abstract:
In one high repetition frequency X-ray free electron laser (XFEL) equipment, the electron gun and compensate solenoid have special structure in the photoinjector, thus the electric field and the magnetic field overlaps near the cathode. The thermal e...
In one high repetition frequency X-ray free electron laser (XFEL) equipment, the electron gun and compensate solenoid have special structure in the photoinjector, thus the electric field and the magnetic field overlaps near the cathode. The thermal e...
2021,
33: 024004.
doi: 10.11884/HPLPB202133.200107
Abstract:
By studying the principle of characteristic impedance mismatch of uniform transmission line, it is found that the characteristic impedance mismatch of transmission cable will lead to the distortion of excitation current amplitude of load terminal. Th...
By studying the principle of characteristic impedance mismatch of uniform transmission line, it is found that the characteristic impedance mismatch of transmission cable will lead to the distortion of excitation current amplitude of load terminal. Th...
2021,
33: 024005.
doi: 10.11884/HPLPB202133.200229
Abstract:
To study the influence of ion beam perveance condition on the grids erosion velocity for 30 cm diameter ion thruster, we established a beam perveance model and calculated the grids erosion velocity caused by CEX (charge exchange) ions by PIC-MCC meth...
To study the influence of ion beam perveance condition on the grids erosion velocity for 30 cm diameter ion thruster, we established a beam perveance model and calculated the grids erosion velocity caused by CEX (charge exchange) ions by PIC-MCC meth...
2021,
33: 025001.
doi: 10.11884/HPLPB202133.200223
Abstract:
With the wide application of all-solid-state high-voltage pulse generators in the fields of material modification, biomedicine and industry, all-solid-state pulse generators are developing in the direction of miniaturization, intelligence and modular...
With the wide application of all-solid-state high-voltage pulse generators in the fields of material modification, biomedicine and industry, all-solid-state pulse generators are developing in the direction of miniaturization, intelligence and modular...
2021,
33: 025002.
doi: 10.11884/HPLPB202133.200142
Abstract:
Aiming at the arc-drawing problem of rail gun armature at muzzle exit, a muzzle arc suppression scheme based on shunt is proposed in this paper. Taking solid armature as the research object, the simulation model of electromagnetic rail launching syst...
Aiming at the arc-drawing problem of rail gun armature at muzzle exit, a muzzle arc suppression scheme based on shunt is proposed in this paper. Taking solid armature as the research object, the simulation model of electromagnetic rail launching syst...
2021,
33: 026001.
doi: 10.11884/HPLPB202133.200168
Abstract:
Aiming at the radiation protection and safety requirements of HLS-II (HLS-Ⅱ), a neutron monitor based on embedded EPICS was developed for neutron monitoring of radiation field and environment. The control system of HLS-II is based on EPICS (Experimen...
Aiming at the radiation protection and safety requirements of HLS-II (HLS-Ⅱ), a neutron monitor based on embedded EPICS was developed for neutron monitoring of radiation field and environment. The control system of HLS-II is based on EPICS (Experimen...
2021,
33: 026002.
doi: 10.11884/HPLPB202133.200152
Abstract:
The 4.6 GHz low hybrid current drive (LHCD) system is an important part in the EAST tokamak auxiliary heating system. Its cathode high voltage dc power supply is based on pulse stepped modulation (PSM) technology. 64 DC modules are used to output 50 ...
The 4.6 GHz low hybrid current drive (LHCD) system is an important part in the EAST tokamak auxiliary heating system. Its cathode high voltage dc power supply is based on pulse stepped modulation (PSM) technology. 64 DC modules are used to output 50 ...
2021,
33: 029001.
doi: 10.11884/HPLPB202133.200221
Abstract:
Compared with a point laser scanning method, a surface exposure laser melting has advantages of high forming efficiency and low residual stress, which has become a promising new generation selective laser melting of additive manufacturing technology....
Compared with a point laser scanning method, a surface exposure laser melting has advantages of high forming efficiency and low residual stress, which has become a promising new generation selective laser melting of additive manufacturing technology....
2021,
33: 029002.
doi: 10.11884/HPLPB202133.200224
Abstract:
To achieve high-power white LED system with high uniformity and narrow beam, an optical system composed of Chips On Board (COB), compound parabolic reflector, Fresnel lens and aspheric lens is designed. In the design, based on the COB light distribut...
To achieve high-power white LED system with high uniformity and narrow beam, an optical system composed of Chips On Board (COB), compound parabolic reflector, Fresnel lens and aspheric lens is designed. In the design, based on the COB light distribut...
