Mode spectrum of multi-longitudinal mode pumped near-degenerate OPOs with volume Bragg grating output couplers
2009 (English)In: Optics Express, ISSN 1094-4087, Vol. 17, no 20, 17582-17589 p.Article in journal (Refereed) Published
Spectral requirements for the first stage OPO used to pump a tandem ZGP mid-infrared OPO are theoretically investigated. Based on these requirements we demonstrate a singly-resonant type-I OPO including periodically poled KTiOPO4 and volume-Bragg gratings as output couplers. Singly resonant oscillation is demonstrated very close to degeneracy, where signal and idler spectra are not well separated. Investigations of the longitudinal mode spectrum and the idler spectrum with high resolution using a scanning Fabry-Perot interferometer show the essential role played by the phase correlations of the multi-longitudinal mode Q-switched pump laser in formation of the nonresonant idler spectrum.
Place, publisher, year, edition, pages
2009. Vol. 17, no 20, 17582-17589 p.
Volume gratings ; Parametric oscillators and amplifiers
IdentifiersURN: urn:nbn:se:kth:diva-12861ISI: 000270295300036ScopusID: 2-s2.0-70349679288OAI: oai:DiVA.org:kth-12861DiVA: diva2:319372
FunderEU, FP7, Seventh Framework Programme, 224042
QC 1005172010-05-172010-05-172015-03-30Bibliographically approved