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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 22 — Nov. 15, 2010
  • pp: 3715–3717

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)

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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

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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

Youngchan Kim and Dae-Su Yee, "High-speed terahertz time-domain spectroscopy based on electronically controlled optical sampling," Opt. Lett. 35, 3715-3717 (2010)

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