Ultrabroadband terahertz generation using 4-N,N-dimethylamino-4′-N′-methyl-stilbazolium tosylate single crystals

被引：43

作者：

Katayama, I. ^{[1
]}

Akai, R. ^{[2
]}

Bito, M. ^{[2
]}

Shimosato, H. ^{[2
]}

Miyamoto, K. ^{[3
]}

Ito, H. ^{[4
]}

Ashida, M. ^{[2
,5
]}

机构：

[1] Yokohama Natl Univ, Interdisciplinary Res Ctr, Yokohama, Kanagawa 2408501, Japan

[2] Osaka Univ, Grad Sch Engn, Toyonaka, Osaka 5608531, Japan

[3] Chiba Univ, Grad Sch Engn, Chiba 2638522, Japan

[4] RIKEN, Sendai, Miyagi 9800845, Japan

[5] JST, PRESTO, Tokyo 1020075, Japan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 02期

关键词：

WAVE DETECTION; PULSES; TECHNOLOGY;

D O I：

10.1063/1.3463452

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ultrabroadband terahertz generation up to 200 THz has been demonstrated using a 5 fs Ti:sapphire laser and a 4-N,N-dimethylamino-4(')-N(')-methyl-stilbazolium tosylate (DAST) crystal. The high-frequency components beyond 100 THz are much stronger than those generated using conventional electro-optic crystals such as GaSe. A simple simulation of the difference frequency generation in the DAST crystal by considering the refractive index dispersion can reproduce the broadband generation of the terahertz wave and its chirp dependence. Because the generated terahertz wave is coherent and has a broad bandwidth, it can serve as a suitable light source for ultrabroadband terahertz time-domain spectroscopy of a material. (C) 2010 American Institute of Physics. [doi:10.1063/1.3463452]

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页数：3

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