High Power Laser and Particle Beams, Volume. 32, Issue 1, 011022(2020)

Broadband second harmonic generation of spatially chirped pulses

Yudong Tao, Dongxia Hu*, and Wei Han
Author Affiliations
  • Research Center of Laser Fusion, CAEP, Mianyang 621900, China
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    Efficient broadband harmonic conversion has important application value in high power laser. However, it is difficult to achieve broad bandwidth and high efficiency at the same time in the traditional second harmonic generation (SHG). This paper proposes a novel broadband SHG scheme, which uses the space-time coupling effect to transform the temporally chirped pulse into a spatially chirped one, and then several spliced crystals are used to achieve efficient broadband frequency conversion. Simulation results show that for the spliced KDP crystal, the conversion efficiency of the fundamental harmonic reaches about 60%, for pulse bandwidth of 30 nm and central wavelength of 1 053 nm. Moreover, the frequency doubled light is still linear and broadband, and can be compressed as the fundamental pulse.

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    Yudong Tao, Dongxia Hu, Wei Han. Broadband second harmonic generation of spatially chirped pulses[J]. High Power Laser and Particle Beams, 2020, 32(1): 011022

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    Paper Information

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    Received: May. 6, 2019

    Accepted: --

    Published Online: Mar. 31, 2020

    The Author Email: Dongxia Hu (dongxia.hu@163.com)

    DOI:10.11884/HPLPB202032.190146

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