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Tandem PPKTP and ZGP OPO for mid-infrared generation
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.
FOI.
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. (Laser Physics)
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.ORCID iD: 0000-0002-2508-391X
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2008 (English)In: Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X, E-ISSN 1996-756X, Vol. 7115, 71150O1-10 p.Article in journal (Refereed) Published
Abstract [en]

Efficient laser sources in the 3-5 μrn wavelength range are needed for directed infrared countermeasures, but also have applications in remote-sensing, medicine and spectroscopy. We present new results on our tandem optical parametric oscillator (OPO) scheme for converting the radiation from a 1.06 μm Nd3+-laser to the mid-infrared. Multi Watt level output power in the 3-5 μm range at 20 kHz pulse repetition frequency is reported. Our setup uses a type I quasi phasematched PPKTP crystal in a near degenerate OPO to generate 2.13 μm radiation. A volume Bragg grating resonant close to, but not exactly at the degenerate wavelength, is used as a cavity mirror to reduce the bandwidth and ensure singly resonant operation. Both signal and idler from the PPKTP OPO are used to pump a ZGP OPO generating high power radiation in the 3-5μm region. Using this scheme for each pump photon it is possible to generate four photons for each pump photon, all in the interesting wavelength range, thus enabling high efficiency conversion.

Place, publisher, year, edition, pages
USA: SPIE - International Society for Optical Engineering, 2008. Vol. 7115, 71150O1-10 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-74805DOI: 10.1117/12.799148Scopus ID: 2-s2.0-62649136953OAI: oai:DiVA.org:kth-74805DiVA: diva2:490035
Conference
Technologies for Optical Countermeasures V; Cardiff, Wales; United Kingdom; 15 September 2008 through 16 September 2008
Note

QC 20120210

Available from: 2012-02-03 Created: 2012-02-03 Last updated: 2017-12-08Bibliographically approved

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Pasiskevicius, ValdasLaurell, Fredrik

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