Kerr lens mode locking without nonlinear astigmatism

Shai Yefet, Valery Jouravsky, Avi Pe'er

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We demonstrate a Kerr lens mode-locked folded cavity using a planar (non-Brewster) Ti:sapphire crystal as a gain and Kerr medium, thus cancelling the nonlinear astigmatism caused by a Brewster cut Kerr medium. Our method uses a novel cavity folding in which the intracavity laser beam propagates in two perpendicular planes, such that the astigmatism of one mirror is compensated by the other mirror, enabling the introduction of an astigmatic free, planar-cut gain medium. We demonstrate that this configuration is inherently free of nonlinear astigmatism, which in standard cavity folding needs a special power-specific compensation.

Original languageEnglish
Pages (from-to)549-551
Number of pages3
JournalJournal of the Optical Society of America B: Optical Physics
Issue number3
StatePublished - Mar 2013


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