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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 5 — Mar. 1, 2013
  • pp: 796–798

High conversion efficiency, high energy terahertz pulses by optical rectification in cryogenically cooled lithium niobate

Shu-Wei Huang, Eduardo Granados, Wenqian Ronny Huang, Kyung-Han Hong, Luis E. Zapata, and Franz X. Kärtner  »View Author Affiliations


Optics Letters, Vol. 38, Issue 5, pp. 796-798 (2013)
http://dx.doi.org/10.1364/OL.38.000796


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Abstract

We demonstrate highly efficient terahertz (THz) generation by optical rectification (OR) of near-optimum pump pulses centered at 1.03 μm in cryogenically cooled lithium niobate. Using a close to optimal pulse duration of 680 fs and a pump energy of 1.2 mJ, we report conversion efficiencies above 3.8±0.4%, which is more than an order of magnitude higher than previously reported. The results confirm the advantage of using cryogenic cooling of the lithium niobate crystal that significantly reduces the THz absorption, enabling the scaling of THz pulse energies to the millijoule level via OR.

© 2013 Optical Society of America

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(260.3090) Physical optics : Infrared, far
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 18, 2013
Manuscript Accepted: January 30, 2013
Published: February 28, 2013

Citation
Shu-Wei Huang, Eduardo Granados, Wenqian Ronny Huang, Kyung-Han Hong, Luis E. Zapata, and Franz X. Kärtner, "High conversion efficiency, high energy terahertz pulses by optical rectification in cryogenically cooled lithium niobate," Opt. Lett. 38, 796-798 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-5-796


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