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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 15 — Jul. 29, 2013
  • pp: 17647–17658

Observation of a cascaded process in intracavity terahertz optical parametric oscillators based on lithium niobate

C. L. Thomson and M. H. Dunn  »View Author Affiliations


Optics Express, Vol. 21, Issue 15, pp. 17647-17658 (2013)
http://dx.doi.org/10.1364/OE.21.017647


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Abstract

Cascaded difference frequency generation has been observed in intracavity optical parametric oscillators based on bulk lithium niobate and producing nanosecond pulses of terahertz radiation. Two idler waves are generated, namely: the primary idler wave associated with the parametric down conversion process itself; and a secondary idler wave, due to difference frequency generation. Experimental investigations of the frequency, temporal evolution, propagation direction, intensity, phase matching and oscillation threshold of the generated down-converted waves are reported. The overall generation efficiency for the terahertz radiation is enhanced, thereby overcoming the Manley-Rowe limit. Advantages of the present approach over schemes based on periodically poled lithium niobate are identified.

© 2013 OSA

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Nonlinear Optics

History
Original Manuscript: June 10, 2013
Revised Manuscript: July 6, 2013
Manuscript Accepted: July 8, 2013
Published: July 16, 2013

Citation
C. L. Thomson and M. H. Dunn, "Observation of a cascaded process in intracavity terahertz optical parametric oscillators based on lithium niobate," Opt. Express 21, 17647-17658 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-15-17647


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