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Low-threshold, mid-infrared backward-wave parametric oscillator with periodically poled Rb: KTP
KTH, School of Engineering Sciences (SCI), Applied Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics.ORCID iD: 0000-0002-8091-195x
KTH, School of Engineering Sciences (SCI), Applied Physics.ORCID iD: 0000-0003-2070-9167
KTH, School of Engineering Sciences (SCI), Applied Physics.ORCID iD: 0000-0002-2508-391X
2018 (English)In: APL Photonics, ISSN 2378-0967, Vol. 3, no 7, article id 071302Article in journal (Refereed) Published
Abstract [en]

We report on the development of a nanosecond mirrorless optical parametric oscillator (OPO) pumped at 1 mu m. The gain medium of the OPO was periodically poled Rubidium-doped KTP with a grating period of Lambda = 509 nm for the first order quasi-phase matching. For grating periods of this length, we demonstrate backward propagation of the signal field and forward propagation of the idler field. To the best of our knowledge, this is the first time such a counter-propagating geometry has been demonstrated in mirrorless OPOs. Pumping with a maximum energy of 6.48 mJ, the OPO yielded an overall conversion efficiency exceeding 53% with signal and idler energies of 1.96 mJ and 1.46 mJ, respectively. The generated signal and idler field spectra were measured to show narrowband linewidths on the order of 0.5 nm. We motivate that such a MOPO is ideal for seeding applications and discuss further improvements and work.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2018. Vol. 3, no 7, article id 071302
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-233295DOI: 10.1063/1.5035493ISI: 000440605200005Scopus ID: 2-s2.0-85055404672OAI: oai:DiVA.org:kth-233295DiVA, id: diva2:1239378
Funder
Swedish Foundation for Strategic Research Swedish Research Council
Note

QC 20180816

Available from: 2018-08-16 Created: 2018-08-16 Last updated: 2020-03-09Bibliographically approved

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Coetzee, Riaan StuartZukauskas, AndriusCanalias, CarlotaPasiskevicius, Valdas

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