A Fiber-Laser Pumped, High-Power Terahertz Wave Source Based on Optical Rectification of Femtosecond Pulses in 4-Dimethylamino-N-methyl-4-stilbazolium Tosylate Crystal

被引：23
|
作者：
Tripathi, Saroj R. [1 ,2 ]
Murate, Kousuke [1 ]
Uchida, Hirohisa [3 ]
Takeya, Kei [1 ]
Kawase, Kodo [1 ,2 ]
机构：
[1] Nagoya Univ, Nagoya, Aichi 4648603, Japan
[2] RIKEN Adv Sci Inst, Sendai, Miyagi 9800845, Japan
[3] ARKRAY Inc, Kyoto 6020008, Japan
来源：
APPLIED PHYSICS EXPRESS | 2013年 / 6卷 / 07期
关键词：
GENERATION; DAST; GROWTH;
D O I：
10.7567/APEX.6.072703
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We demonstrate a compact, broadband, and high-power terahertz wave-generation scheme via optical rectification of femtosecond pulses in a 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) crystal. We used a femtosecond fiber laser with a high repetition rate and an average power of a few hundred milliwatts to illuminate the DAST crystal. The terahertz waves emitted from the DAST crystal were measured using a calibrated pyroelectric sensor. We obtained an average power of 18 mu W, more than two orders of magnitude greater than the average terahertz power emitted by a typical photoconductive antenna. (C) 2013 The Japan Society of Applied Physics
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页数：3
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