Cascaded mode-locking of a spectrally controlled Yb: KYW laser
2014 (English)In: Applied physics. B, Lasers and optics (Print), ISSN 0946-2171, E-ISSN 1432-0649, Vol. 116, no 2, 493-499 p.Article in journal (Refereed) Published
Self-starting and stable mode-locking of an Yb:KYW laser in the picoseconds pulse regime has been achieved by exploiting a positive cascaded Kerr lens in periodically poled KTP. The use of a volume Bragg grating (VBG), for locking the output spectrum of the laser, was essential to achieve a stable mode-locked operation in this wide gain bandwidth laser material. The laser emitted stable, nearly transform-limited pulses with a duration of 16 ps, at a repetition rate of 210 MHz, and with an energy of 3.2 nJ. The mode-locked spectrum was centred at 1,029.1 nm and featured a FWHM bandwidth of 85 pm, which was effectively determined by the VBG. Combination of a large cascaded Kerr nonlinearity with spectral limiting by a VBG represents so far the best opportunity for stable mode-locking of a broadband laser to produce near-transform-limited picosecond pulses.
Place, publisher, year, edition, pages
2014. Vol. 116, no 2, 493-499 p.
Laser accessories, Locks (fasteners), Ytterbium, Broad-band lasers, Kerr nonlinearity, Mode-locked spectra, Periodically poled KTP, Pico-second pulse, Repetition rate, Transform-limited pulse, Volume bragg grating (VBG)
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-131453DOI: 10.1007/s00340-013-5725-6ISI: 000339727000028ScopusID: 2-s2.0-84904473166OAI: oai:DiVA.org:kth-131453DiVA: diva2:656435
FunderSwedish Research Council
QC 201409042013-10-152013-10-152014-09-04Bibliographically approved