Mid-infrared ZGP OPO pumped by near-degenerate narrowband type-I PPKTP parametric oscillator.
2007 (English)In: Applied physics. B, Lasers and optics (Print), ISSN 0946-2171, E-ISSN 1432-0649, Vol. 88, no 1, 37-41 p.Article in journal (Refereed) Published
The total pulse energy of the signal and idler in a near-degenerate type-I periodically poled KTiOPO4 (PPKTP) optical parametrical oscillator (OPO) was spectrally confined within a 2 nm spectral bandwidth at 2.13 mu m. This was achieved by using a volume Bragg grating as the output coupler. Both the signal and the idler from the PPKTP OPO were then simultaneously used to pump a mid-infrared ZnGeP2 (ZGP) OPO. The 2 nm bandwidth was narrower than the ZGP crystal acceptance bandwidth and, thus, made efficient conversion in the second OPO possible. A total slope efficiency of 10% from 1.06 mu m to the 3.5-5 mu m region was demonstrated, generating 250 mu J in the mid-IR with only 3.6 mJ of 1.06 mu m pump energy. This corresponds to a Nd:YAG pump to mid-IR conversion efficiency of 7%.
Place, publisher, year, edition, pages
2007. Vol. 88, no 1, 37-41 p.
2 mu-m, linewidth, power
IdentifiersURN: urn:nbn:se:kth:diva-6721DOI: 10.1007/s00340-007-2661-3ISI: 000247306900006ScopusID: 2-s2.0-34250616712OAI: oai:DiVA.org:kth-6721DiVA: diva2:11510
Tidigare titel: Efficient pumping of ZGP OPO by narrowband near degenerate PPKTP OPO.
Uppdaterad från submitted till published(20101108).
QC 201011082007-01-102007-01-102015-03-30Bibliographically approved