High-speed terahertz time-domain spectroscopy based on electronically controlled optical sampling

被引：99

作者：

Kim, Youngchan ^{[1
]}

Yee, Dae-Su ^{[1
]}

机构：

[1] Korea Res Inst Stand & Sci, Ctr Safety Measurement, Taejon 305340, South Korea

来源：

OPTICS LETTERS | 2010年 / 35卷 / 22期

关键词：

RESOLUTION; SPECTROMETER;

D O I：

10.1364/OL.35.003715

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate high-speed terahertz (THz) time-domain spectroscopy based on electronically controlled optical sampling (ECOPS). The ECOPS system utilizes two synchronized Ti:sapphire femtosecond lasers with a 100 MHz repetition frequency. The time delay between the two laser pulses is demonstrated to be rapidly swept at a scan rate of 1 kHz on a time delay window of 77 ps by using an external offset voltage applied to a locking electronics. It is shown that a THz pulse can be exactly measured by ECOPS, as is done by asynchronous optical sampling (ASOPS), and the measurement time is shortened by a factor of 50 by using ECOPS compared with ASOPS in the case of employing 100 MHz repetition-rate lasers. (C) 2010 Optical Society of America

引用

页码：3715 / 3717

页数：3

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