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

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oe_21_15_17647.pdf (1.150Mb)
Date
29/07/2013
Author
Thomson, C. L.
Dunn, M. H.
Keywords
Cascaded difference frequency generation
Intracavity optical parametric oscillators
Lithium niobate
Terahertz radiation
Idler waves
Manley-Rowe limit
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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.
Citation
Thomson , C L & Dunn , M H 2013 , ' Observation of a cascaded process in intracavity terahertz optical parametric oscillators based on lithium niobate ' , Optics Express , vol. 21 , no. 15 , pp. 17647-17658 . https://doi.org/10.1364/OE.21.017647
Publication
Optics Express
Status
Peer reviewed
DOI
https://doi.org/10.1364/OE.21.017647
ISSN
1094-4087
Type
Journal article
Rights
© 2013 OSA. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at: http://www.opticsinfobase.org/oe/fulltext.cfm?uri=oe-21-15-17647&id=259402. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4306

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