Generation of the fourth harmonic of a femtosecond Ti:sapphire laser
- 1 July 1998
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 23 (13) , 1040-1042
- https://doi.org/10.1364/ol.23.001040
Abstract
A high-repetition-rate femtosecond laser system operating, for the first time to our knowledge, in the spectral region near 200 nm is described. Frequency quadrupling of a mode-locked Ti:sapphire laser results in maximum average powers of 6 mW (165-fs pulses) and 15 mW (340-fs pulses) at 82 MHz. The shortest wavelength achieved is 193.7 nm.Keywords
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