Mid-infrared (5-12-μm) and limited (5.5-8.5-μm) single-knob tuning generated by difference-frequency mixing in single-crystal AgGaS2

被引：22

作者：

Haidar, S

Nakamura, K

Niwa, E

Masumoto, K

Ito, H

机构：

[1] Tohoku Univ, Elect Commun Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Res Inst Elect & Magnet Mat, Taihaku Ku, Sendai, Miyagi 982, Japan

来源：

APPLIED OPTICS | 1999年 / 38卷 / 09期

关键词：

D O I：

10.1364/AO.38.001798

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe tunable 5-12-mu m mid-infrared generation in single-crystal silver gallium sulfide (AgGaS2), from nonlinear optical difference-frequency generation. Signal and idler waves obtained from a Nd:YAG laser-pumped LiNbO3 optical parametric oscillator (OPO) were mixed in AgGaS2 crystal to yield difference-frequency waves. For the efficient generation of difference frequency, an unstable resonator was employed as the OPO to reduce output beam divergence. A maximum difference-frequency power of 95 mu J/pulse was obtained near 7.5 mu m for a 1-cm-long AgGaS2 crystal. Spectral noncritical phase matching within a specific tuning range was also investigated that permitted limited single-knob tuning (5.5-8.5 mu m) of the difference-frequency generator. (C) 1999 Optical Society of America.

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收藏

页码：1798 / 1801

页数：4

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