Ultra-broadband detection of coherent infrared pulses by sum-frequency generation spectroscopy in reflection geometry

被引：0
|
作者：
Kameyama, Risako [1 ,2 ]
Tanaka, Shunsuke [2 ]
Murotani, Yuta [2 ]
Matsuda, Takuya [2 ]
Kanda, Natsuki [2 ]
Matsunaga, Ryusuke [2 ]
Yoshinobu, Jun [2 ]
机构：
[1] Univ Tokyo, Dept Chem Syst Engn, 7-3-1 Hongo,Bunkyo Ku, Tokyo 1138654, Japan
[2] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan
来源：
OPTICS LETTERS | 2024年 / 49卷 / 14期
基金：
日本学术振兴会;
关键词：
VIBRATIONAL SPECTROSCOPY; TERAHERTZ PULSES; UP-CONVERSION; SPECTRA; EXCITATION;
D O I：
10.1364/OL.530328
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have newly developed, to the best of our knowledge, a detection method for broadband infrared pulses based on sum-frequency generation spectroscopy in reflection geometry, which can avoid a restriction of the detection bandwidth originating from the phase mismatch that is inevitable for the upconversion in transmission geometry. Using a GaAs crystal, we successfully demonstrated the ultra-broadband detection of the infrared pulses generated from a two-color laser-induced air plasma filament in a region from 300 to 3300 cm-1. With the advantage of ultra-short infrared pulses, the present detection method holds promise for application to time-resolved, ultra-broadband vibrational and similar technologies, are reserved.
引用
收藏
页码：3978 / 3981
页数：4
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