Broadband second harmonic generation of spatially chirped pulses

Tao Yudong; Hu Dongxia; Han Wei

doi:10.11884/HPLPB202032.190146

Volume 32 Issue 1

Dec. 2019

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Tao Yudong, Hu Dongxia, Han Wei. Broadband second harmonic generation of spatially chirped pulses[J]. High Power Laser and Particle Beams, 2020, 32: 011022. doi: 10.11884/HPLPB202032.190146

Citation:

Tao Yudong, Hu Dongxia, Han Wei. Broadband second harmonic generation of spatially chirped pulses[J]. High Power Laser and Particle Beams, 2020, 32: 011022. doi: 10.11884/HPLPB202032.190146

Tao Yudong, Hu Dongxia, Han Wei. Broadband second harmonic generation of spatially chirped pulses[J]. High Power Laser and Particle Beams, 2020, 32: 011022. doi: 10.11884/HPLPB202032.190146

Citation:

Tao Yudong, Hu Dongxia, Han Wei. Broadband second harmonic generation of spatially chirped pulses[J]. High Power Laser and Particle Beams, 2020, 32: 011022. doi: 10.11884/HPLPB202032.190146

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Broadband second harmonic generation of spatially chirped pulses

doi: 10.11884/HPLPB202032.190146

Research Center of Laser Fusion, CAEP, Mianyang 621900, China

Received Date: 2019-05-06
Rev Recd Date: 2019-12-02
Publish Date: 2019-12-26

Abstract

Abstract

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.
- second-harmonic conversion,
- broadband light,
- frequency domain,
- spatial chirp,
- temporal chirp

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References(15)

References

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