Elliptical hole-coupling optical resonator in THz FEL

Dou Yuhuan; Shu Xiaojian

doi:10.3788/HPLPB20132506.1455

Volume 25 Issue 06

Apr. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(06): 1455-1459

Dou Yuhuan, Shu Xiaojian. Elliptical hole-coupling optical resonator in THz FEL[J]. High Power Laser and Particle Beams, 2013, 25: 1455-1459. doi: 10.3788/HPLPB20132506.1455

Citation:

Dou Yuhuan, Shu Xiaojian. Elliptical hole-coupling optical resonator in THz FEL[J]. High Power Laser and Particle Beams, 2013, 25: 1455-1459. doi: 10.3788/HPLPB20132506.1455

Dou Yuhuan, Shu Xiaojian. Elliptical hole-coupling optical resonator in THz FEL[J]. High Power Laser and Particle Beams, 2013, 25: 1455-1459. doi: 10.3788/HPLPB20132506.1455

Citation:

Dou Yuhuan, Shu Xiaojian. Elliptical hole-coupling optical resonator in THz FEL[J]. High Power Laser and Particle Beams, 2013, 25: 1455-1459. doi: 10.3788/HPLPB20132506.1455

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Elliptical hole-coupling optical resonator in THz FEL

doi: 10.3788/HPLPB20132506.1455

Dou Yuhuan^{1,2
,
,},
Shu Xiaojian^1,2

1.
Institute of Applied Physics and Computational Mathematics,P.O.Box 8009,Beijing 100094,China; 2.Terahertz Research Center,China Academy of Engineering Physics,Mianyang 621900,China

Received Date: 2012-09-24
Rev Recd Date: 2012-11-21
Publish Date: 2013-04-08

Abstract

Abstract

The scheme of elliptical hole-coupling optical resonator is proposed instead of circular hole-coupling resonator which is used in THz FEL in order to increase the output power and resonator quality. Three-dimensional simulations and design on elliptical hole-coupling optical resonator are carried out using our 3D OSIFEL code. It is proved that the elliptical hole-coupling optical resonator is effective and applicable for the THz FEL. Using elliptical hole-coupling optical resonator, the output power can be increased by more than 33%, and the coupling efficiency of resonator can be increased almost by 30%-70%. The superiority of elliptical hole-coupling optical resonator will be more prominent with radiation frequency increasing.
- terahertz,
- free-electron laser,
- optical resonator,
- coupling design

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