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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 1 — Jan. 3, 2011

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

Youngchan Kim and Dae-Su Yee  »View Author Affiliations


Optics Letters, Vol. 35, Issue 22, pp. 3715-3717 (2010)
http://dx.doi.org/10.1364/OL.35.003715


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Abstract

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.

© 2010 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6190) Spectroscopy : Spectrometers
(300.6270) Spectroscopy : Spectroscopy, far infrared
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Spectroscopy

History
Original Manuscript: August 25, 2010
Revised Manuscript: October 4, 2010
Manuscript Accepted: October 10, 2010
Published: November 1, 2010

Virtual Issues
Vol. 6, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Youngchan Kim and Dae-Su Yee, "High-speed terahertz time-domain spectroscopy based on electronically controlled optical sampling," Opt. Lett. 35, 3715-3717 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-35-22-3715


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