Waveguide-Mode Terahertz Free Electron Lasers Driven by Magnetron-Based Microtrons

被引:5
作者
Jeong, Young Uk [1 ,2 ]
Miginsky, Sergey [1 ,3 ]
Gudkov, Boris [1 ]
Lee, Kitae [1 ,2 ]
Mun, Jungho [1 ,4 ]
Shim, Gyu Il [1 ]
Bae, Sangyoon [1 ,4 ]
Kim, Hyun Woo [1 ,2 ]
Jang, Kyu-Ha [1 ,2 ]
Park, Sunjeong [1 ,5 ]
Park, Seong Hee [1 ,2 ]
Vinokurov, Nikolay [1 ,3 ]
机构
[1] Korea Atom Energy Res Inst, Daejeon, South Korea
[2] Univ Sci & Technol, Dept Accelerator & Nucl Fus Phys Engn, Daejeon, South Korea
[3] SB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
[4] Chungnam Natl Univ, Dept Phys, Daejeon, South Korea
[5] Kyungbook Natl Univ, Dept Phys, Daegu, South Korea
关键词
Electromagnetic radiation; electron beams; free electron lasers; submillimeter wave propagation; submillimeter wave technology; undulators; FIR FEL DRIVEN; RADIATION; EMISSION;
D O I
10.1109/TNS.2015.2476819
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We have developed small-sized terahertz free-electron lasers by using low-cost and compact microtrons combining with magnetrons as high-power RF sources. We could stabilize the bunch repetition rate by optimizing a modulator for the magnetron and by coupling the magnetron with an accelerating cavity in the microtron. By developing high-performance undulators and low-loss waveguide-mode resonators having small cross-sectional areas, we could strengthen the interaction between the electron beam and the THz wave inside the FEL resonators to achieve lasing even with low-current electron beams from the microtron. We used a parallel-plate waveguide in a planar electromagnet undulator for our first THz FEL. We try to reduce the size of the FEL resonator by combining a dielectric-coated circular waveguide and a variable-period helical undulator to realize a table-top THz FEL for applying it to the security inspection on airports.
引用
收藏
页码:898 / 905
页数:8
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