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

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 × ...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2016-03, Vol.108 (12)
Main Authors: Urbanek, B., Möller, M., Eisele, M., Baierl, S., Kaplan, D., Lange, C., Huber, R.
Format: Article
Language:English
Subjects:
Acousto-optics
Applied physics
Delay
Fiber technology
Optical design
Polytetrafluoroethylene
Time domain analysis
Windows (intervals)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 × 105 / H z . 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/ H z . The compact, all-optical design ensures alignment-free operation even in harsh environments.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4944459