Efficient Doubling of Femtosecond Pulses in Aperiodically and Periodically Poled KTP Crystals
2007 (English)In: Optics express, ISSN 1094-4087, Vol. 15, no 3, 1155-1160 p.Article in journal (Refereed) Published
Efficient doubling of femtosecond pulses in periodically and aperiodically poled KTP crystals is demonstrated by employing the quasi-phasematched frequency conversion technique. Conversion efficiencies as high as 60% were achieved using either aperiodically or periodically poled KTP nonlinear crystals in an extracavity, single-pass configuration using a diode-pumped femtosecond Yb:KYW laser as the pump source. The temporal characteristics of the frequency-doubled pulses as a function of focusing conditions in a "thick" nonlinear crystal regime have been investigated experimentally and pulses as short as 177 fs have been generated at around 520 nm under strong focusing conditions using a KTP crystal with aperiodic poling.
Place, publisher, year, edition, pages
2007. Vol. 15, no 3, 1155-1160 p.
2nd harmonic-generation, flux-grown ktiopo4, 2nd-harmonic generation, blue; index, field
IdentifiersURN: urn:nbn:se:kth:diva-6627DOI: 10.1364/OE.15.001155ISI: 000244682200044ScopusID: 2-s2.0-33846875671OAI: oai:DiVA.org:kth-6627DiVA: diva2:11386
QC 201008302006-12-152006-12-152015-03-30Bibliographically approved