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Suppression of transverse stimulated Raman scattering in large-aperture potassium dihydrogen phosphate crystals by pulse stacking

Published online by Cambridge University Press:  12 February 2019

Xinmin Fan Open the ORCID record for Xinmin Fan [Opens in a new window] ,
Sensen Li ,
Jianxin Zhang ,
Xiaodong Huang ,
Chunyan Wang ,
Hourong Li  and
Yongzhi Sun
Xinmin Fan*
Affiliation:
School of Physics and Optoelectronic Engineering & Institute of New Electromagnetic Materials, Weifang University, Weifang 261061, China
Sensen Li
Affiliation:
Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin 300308, China
Jianxin Zhang
Affiliation:
School of Physics and Optoelectronic Engineering & Institute of New Electromagnetic Materials, Weifang University, Weifang 261061, China
Xiaodong Huang
Affiliation:
School of Physics and Optoelectronic Engineering & Institute of New Electromagnetic Materials, Weifang University, Weifang 261061, China
Chunyan Wang
Affiliation:
School of Physics and Optoelectronic Engineering & Institute of New Electromagnetic Materials, Weifang University, Weifang 261061, China
Hourong Li
Affiliation:
School of Physics and Optoelectronic Engineering & Institute of New Electromagnetic Materials, Weifang University, Weifang 261061, China
Yongzhi Sun
Affiliation:
School of Physics and Optoelectronic Engineering & Institute of New Electromagnetic Materials, Weifang University, Weifang 261061, China
*
Author for correspondence: Xinmin Fan, School of Physics and Optoelectronic Engineering & Institute of New Electromagnetic Materials, Weifang University, Weifang 261061, China, E-mail: [email protected]
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Abstract

Effective suppression of transverse stimulated Raman scattering (TSRS) in a large-aperture potassium dihydrogen phosphate (KDP) crystal is an important scientific and technical problem in high-intensity laser research and applications. In this work, a method to suppress TSRS using pulse stacking is proposed. The method suppresses TSRS significantly, with greater numbers of subpulses producing more obvious suppression effects, and the threshold intensity growth rate of the 3ω laser in the KDP crystal reaches up to about 1.9 when the stacked pulse contains four subpulses. This suppression effect is attributed to the fact that the polarization directions of adjacent subpulses are perpendicular to each other. The method can be used to suppress other nonlinear effects, including transverse stimulated Brillouin scattering in large-aperture optical devices and stimulated rotational Raman scattering in long air paths.

Keywords

Potassium dihydrogen phosphatepulse stackingtransverse stimulated Raman scattering
Type
Research Article
Information
Laser and Particle Beams , Volume 37 , Issue 1 , March 2019 , pp. 1 - 4
Copyright
Copyright © Cambridge University Press 2019 

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