Abstract
In view of the desirability of spectral versatility in time-domain spectroscopy, a major topic of active research continues to be the development of ultrashort-pulse sources that give access to extended tuning ranges. The self-mode-locking technique, first reported1 for a titanium-sapphire laser, represented a major advance in this field. It was important because the inherent tunability of this type of femtosecond laser was not compromised by the characteristics of the saturable absorbers that had previously been used with colliding-pulse mode-locked dye lasers. Consequently, self-mode-locking (also referred to as Kerr-lens mode locking2) has now become well established for a relatively wide range of experimental and commercial laser systems.
© 1994 Optical Society of America
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