We report mode-locked operation of a synchronously pumped Ce:LiCAF oscillator. The laser operated in the deep UV with output radiation centered at 291 nm and a pulse duration of 6 ps. The maximum output power measured was 52 mW, with 13% slope efficiency. The Ce:LiCAF crystal has a gain bandwidth capable of supporting few-femtosecond pulses, and so our results demonstrate the potential to form a new class of ultrafast lasers operating directly at deep UV wavelengths.
© 2009 Optical Society of America
Lasers and Laser Optics
Original Manuscript: March 3, 2009
Manuscript Accepted: March 27, 2009
Published: May 26, 2009
Eduardo Granados, David W. Coutts, and David J. Spence, "Mode-locked deep ultraviolet Ce:LiCAF laser," Opt. Lett. 34, 1660-1662 (2009)