Femtosecond terahertz time-domain spectroscopy at 36 kHz scan rate using an acousto-optic delay

被引：27

作者：

Urbanek, B. ^{[1
]}

Moeller, M. ^{[1
]}

Eisele, M. ^{[1
]}

Baierl, S. ^{[1
]}

Kaplan, D. ^{[2
]}

Lange, C. ^{[1
]}

Huber, R. ^{[1
]}

机构：

[1] Univ Regensburg, Dept Phys, D-93053 Regensburg, Germany

[2] Fastlite, 1900 Route Cretes, F-06560 Valbonne, France

来源：

APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 12期

基金：

欧洲研究理事会;

关键词：

OPTICAL COHERENCE TOMOGRAPHY; LASER; GENERATION; PRECISION; DYNAMICS; FIELD;

D O I：

10.1063/1.4944459

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a rapid-scan, time-domain terahertz spectrometer employing femtosecond Er:fiber technology and an acousto-optic delay with attosecond precision, enabling scanning of terahertz transients over a 12.4-ps time window at a waveform refresh rate of 36 kHz, and a signal-to-noise ratio of 1.7 x 10(5) / root Hz. Our approach enables real-time monitoring of dynamic THz processes at unprecedented speeds, which we demonstrate through rapid 2D thickness mapping of a spinning teflon disc at a precision of 10 nm/root Hz. The compact, all-optical design ensures alignment-free operation even in harsh environments. (C) 2016 AIP Publishing LLC.

引用

页数：5

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