Enhancement of Raman scattering by parametric mixing of the pump with its harmonic

被引：5

作者：

Marchetti, S. ^{[1
]}

Gabbanini, C. ^{[1
]}

机构：

[1] CNR, INO, UOS Pisa Adriano Gozzini, I-56124 Pisa, Italy

来源：

OPTICS COMMUNICATIONS | 2012年 / 285卷 / 15期

关键词：

Raman scattering; Parametric mixing; GENERATION; HYDROGEN; H-2; THRESHOLD; LASER;

D O I：

10.1016/j.optcom.2012.03.017

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A strong focusing of the pump laser is generally used to reduce the Stimulated Raman Scattering (SRS) threshold, but it also produces a phase matching condition in the region of strong gain. This causes a large threshold for SRS in the near infrared due both to the increased diffraction limit and to the destructive interaction of antiStokes-Stokes processes. However the phase matching condition can be used to reduce the threshold by Raman parametric mixing (RPM) of the pump with the second harmonic generated by a fraction of pump. It this way we have observed a lowering of the threshold of about a factor 2.3 and an increase of the SRS of the pump. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：3312 / 3315

页数：4

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