Efficient femtosecond travelling-wave parametric amplification in periodically poled KTiOPO4
1999 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 24, 1874-1876 p.Article in journal (Refereed) Published
We report, for the first time to our knowledge, high-power femtosecond traveling-wave optical parametric amplification by use of periodically poled KTiOPO4. With a single pass through a 4-mm-long sample of 1.23-mm thickness we achieved 40% internal conversion efficiency and 5 μJ of single-pulse idler energy near 3.8 μm, using only 75 μJ of energy from the output of a conventional 1-kHz Ti:sapphire regenerative amplifier. The 210-fs-long idler pulses were almost transform limited. We discuss the specific problems encountered in high-power parametric conversion, such as unwanted quasi-phase-matched upconversion processes for polarization configurations that utilize the largest (d33) nonlinear coefficient and the related formation of color centers (gray tracking) in KTiOPO4.
Place, publisher, year, edition, pages
Optical Society of America, 1999. Vol. 24, 1874-1876 p.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-181716DOI: 10.1364/OL.24.001874ISI: 000084493600028ScopusID: 2-s2.0-0000870844OAI: oai:DiVA.org:kth-181716DiVA: diva2:899930
FunderSwedish Research Council
QC 201603022016-02-022016-02-022016-03-02Bibliographically approved