Optimization of quadrature frequency conversion with type-II KDP for second harmonic generation of the nanosecond chirp pulse at 1053 nm

Lailin Ji; Baoqiang Zhu; Chong Liu; Tao Wang; Zunqi Lin

doi:10.3788/col201412.031902

Journals >Collection Of theses on high power laser and plasma physics >Volume 12 >Issue 1 >Page 31902 > Article

Collection Of theses on high power laser and plasma physics
Vol. 12, Issue 1, 31902 (2014)

Optimization of quadrature frequency conversion with type-II KDP for second harmonic generation of the nanosecond chirp pulse at 1053 nm

Lailin Ji^1,2,*, Baoqiang Zhu¹, Chong Liu¹, Tao Wang², and Zunqi Lin¹

Author Affiliations

¹Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²Shanghai institute of laser plasma, Chinese academy of engineer and physics, Shanghai 201800, China

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DOI: 10.3788/col201412.031902 Cite this Article

Lailin Ji, Baoqiang Zhu, Chong Liu, Tao Wang, Zunqi Lin. Optimization of quadrature frequency conversion with type-II KDP for second harmonic generation of the nanosecond chirp pulse at 1053 nm[J]. Collection Of theses on high power laser and plasma physics, 2014, 12(1): 31902 Copy Citation Text

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Abstract

A second harmonic generation system with two type II KDP crystals in quadrature is optimized for the nanosecond chirp pulse. The acceptance bandwidth of this optimizing scheme is close to 10 nm by using two crystals with slightly opposite angular detuning from phase matching and the conversion efficiency can reach 70% for top-hat chirp pulse at ～2 GW/cm2 in theory. The preliminary experimental results are obtained on the 9th beam of Shen Guang II SGII laser system, and the performance of optimization is partially verified.

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