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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 15 — Jul. 24, 2006
  • pp: 6813–6822

Tunable, high peak power terahertz radiation from optical rectification of a short modulated laser pulse

Daniel F. Gordon, Antonio Ting, Ilya Alexeev, Richard Fischer, Phillip Sprangle, Christos A. Kapetenakos, and Arie Zigler  »View Author Affiliations

Optics Express, Vol. 14, Issue 15, pp. 6813-6822 (2006)

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A new way of generating high peak power terahertz radiation using ultra-short pulse lasers is demonstrated. The optical pulse from a titanium:sapphire laser system is stretched and modulated using a spatial filtering technique to produce a several picosecond long pulse modulated at the terahertz frequency. A collinear type II phase matched interaction is realized via angle tuning in a gallium selenide crystal. Peak powers of at least 1.5 kW are produced in a 5 mm thick crystal, and tunability is demonstrated between 0.7 and 2.0 THz. Simulations predict that 150 kW of peak power can be produced in a 5 mm thick crystal. The technique also allows for control of the terahertz bandwidth.

© 2006 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.5390) Ultrafast optics : Picosecond phenomena
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Nonlinear Optics

Original Manuscript: February 3, 2006
Revised Manuscript: May 29, 2006
Manuscript Accepted: June 25, 2006
Published: July 24, 2006

Daniel F. Gordon, Antonio Ting, Ilya Alexeev, Richard Fischer, Phillip Sprangle, Christos A. Kapetenakos, and Arie Zigler, "Tunable, high peak power terahertz radiation from optical rectification of a short modulated laser pulse," Opt. Express 14, 6813-6822 (2006)

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