Generation of Sub 50-fs Mid-Infrared Pulses by Optical Parametric Amplifier Based on Periodically-Poled MgO:LiNbO3

被引：4

作者：

Ashihara, Satoshi ^{[1
,2
]}

Mochizuki, Takahiro ^{[3
]}

Yamamoto, Shunsuke ^{[3
]}

Shimura, Tsutomu ^{[3
]}

Kuroda, Kazuo ^{[3
]}

机构：

[1] Tokyo Univ Agr & Technol, Dept Appl Phys, Koganei, Tokyo 1848588, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

[3] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2009年 / 48卷 / 04期

基金：

日本学术振兴会; 日本科学技术振兴机构;

关键词：

RETRACING BEHAVIOR; BAND;

D O I：

10.1143/JJAP.48.042501

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Femtosecond pulses with the bandwidth in excess of 600 nm in 3-4 mu m spectral range were generated by an optical parametric amplifier based on periodically-poled MgO:LiNbO3. We utilized broadband quasi-phase-matching condition, which appears around the idler wavelength of 3400 nm when pumped at 800 nm. The generated mid-infrared pulses were characterized by the frequency-resolved optical gating method in the second-harmonic generation geometry. After the second-order spectral phase was compensated by dispersive transmission through a silicon window, the pulse duration was about 45fs, corresponding to four optical cycles. Compensation of higher-order spectral phase could enable the generation of few-cycle pulses. (C) 2009 The Japan Society of Applied Physics

引用

页数：5

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