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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 21 — Nov. 1, 2010
  • pp: 3544–3546

Laser-induced photoacoustics influenced by single-cycle terahertz radiation

Benjamin Clough, Jingle Liu, and X.-C. Zhang  »View Author Affiliations


Optics Letters, Vol. 35, Issue 21, pp. 3544-3546 (2010)
http://dx.doi.org/10.1364/OL.35.003544


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Abstract

Laser-induced plasma acoustic waves are enhanced under the illumination of single-cycle terahertz (THz) radiation, making THz-enhanced acoustics (TEA) a useful method for THz wave detection. During a single-cycle THz pulse with its peak field of 100 kV / cm , a pressure enhancement of 10% is observed throughout the acoustic spectrum up to 140 kHz , and the TEA signal is found to increase linearly with THz wave intensity. By using dual-color laser excitation to manipulate free electron drift, it is possible to modulate the enhanced acoustic signal and recover a coherent THz time-domain waveform by simply “listening” to the plasma.

© 2010 Optical Society of America

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(140.3440) Lasers and laser optics : Laser-induced breakdown
(350.5400) Other areas of optics : Plasmas
(040.2235) Detectors : Far infrared or terahertz
(280.3375) Remote sensing and sensors : Laser induced ultrasonics

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 1, 2010
Revised Manuscript: September 8, 2010
Manuscript Accepted: September 17, 2010
Published: October 19, 2010

Citation
Benjamin Clough, Jingle Liu, and X.-C. Zhang, "Laser-induced photoacoustics influenced by single-cycle terahertz radiation," Opt. Lett. 35, 3544-3546 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-21-3544

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