Investigation of stimulated rotational Raman scattering of the high-power broadband laser with applied angular dispersion

doi:10.1088/1674-1056/22/12/124206

Abstract Smoothing by spectral dispersion (SSD) leads to considerable improvement on laser-irradiation uniformity in far field for fusion lasers. Phase modulation in time and spectral angular dispersion (SAD) across the beam introduced by SSD will affect the stimulated rotational Raman scattering (SRRS) gain in the near field. This paper focuses on the influence of SAD on SRRS gain under different laser conditions. Results show that the SAD will aggravate the generation of SRRS when the laser initial additional phase is constant. On the contrary, the SAD can reduce the SRRS gain if appropriate SSD parameters are adopted when the laser initial additional phase is variable. SSD has a certain application prospect in SRRS suppression.

Keywords: spectral angular dispersion smoothing by spectral dispersion rotational Raman scattering

Received: 26 December 2012
Revised: 29 March 2013
Accepted manuscript online:

PACS:	42.65.-k	(Nonlinear optics)
	34.50.-s	(Scattering of atoms and molecules)

Fund: Project supported by the State Key Program of the National Natural Science Foundation of China (Grant No. 61138005) and the National Natural Science Foundation of China (Grant No. 61008004).

Corresponding Authors: Lin Dian-Yang
E-mail: dianyanglin@163.com

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Fan Xin-Min (樊心民), Lü Zhi-Wei (吕志伟), Lin Dian-Yang (林殿阳), Liu Ying (刘颖), Zhu Cheng-Yu (朱成禹), He Wei-Ming (何伟明), Ding Lei (丁磊) Investigation of stimulated rotational Raman scattering of the high-power broadband laser with applied angular dispersion 2013 Chin. Phys. B 22 124206

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[1]	The influence of smoothing by spectral dispersion on the beam characteristics in the near field Fan Xin-Min (樊心民), Lü Zhi-Wei (吕志伟), Lin Dian-Yang (林殿阳), Wang Yu-Lei (王雨雷). Chin. Phys. B, 2013, 22(10): 104210.

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Investigation of stimulated rotational Raman scattering of the high-power broadband laser with applied angular dispersion

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