Generation and characterization of twist beam

Wang Guozhen; Feng Guoying; Deng Guoliang; Liu Qinhou; Zhou Shouhuan

doi:10.11884/HPLPB201729.170021

Volume 29 Issue 07

Jul. 2017

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Article Navigation > High Power Laser and Particle Beams > 2017 > 29(07): 071001

Kozlov A, Parfenov Yu, Chepelev V, et al. Assessing immunity of power systems to effects of high-voltage pulses with power on[J]. High Power Laser and Particle Beams, 2019, 31: 070006. doi: 10.11884/HPLPB201931.180356

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Wang Guozhen, Feng Guoying, Deng Guoliang, et al. Generation and characterization of twist beam[J]. High Power Laser and Particle Beams, 2017, 29: 071001. doi: 10.11884/HPLPB201729.170021

Citation:

Wang Guozhen, Feng Guoying, Deng Guoliang, et al. Generation and characterization of twist beam[J]. High Power Laser and Particle Beams, 2017, 29: 071001. doi: 10.11884/HPLPB201729.170021

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Generation and characterization of twist beam

doi: 10.11884/HPLPB201729.170021

1.
Institute of Laser &Micro/Nano Engineering,College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China;
2.
North China Research Institute of Electro-Optics,Beijing 100015,China

Received Date: 2017-01-19
Rev Recd Date: 2017-03-15
Publish Date: 2017-07-15

Abstract

Abstract

The characterization of the twist beam can not be accomplished by using only the beam propagation ratios because the transverse cross section keeps changing during propagation. The generation and characterization of the twist Gaussian beam by two cylinder lenses are studied theoretically and experimentally. The twist coefficient is introduced to characterize the level of twist. The beam propagation ratios for the twist Gaussian beam at an azimuth angle are theoretically derived. The twist coefficients of the twist beams generated by two cylinder lenses with different angle and spacing are obtained by using the beam-transfer-matrix and the numerical simulation. The results show that the properties of the twist beam can be characterized better by the combination of the beam propagation ratios and the twist coefficient. The theoretical work is in good agreement with the experimental results.
- twist coefficient,
- twist beam,
- two cylinder lenses,
- Gaussian beam,
- beam quality measurement

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