Passive Mode Locking of Flashlamp-Pumped Dye Lasers Tunable between 580 and 700 nm

Abstract
Employing polymethine dyes as saturable absorbers and intracavity Fabry‐Perot interferometers, a flashlamp‐pumped cresyl‐violet dye laser has been mode locked to produce picosecond pulses (3–5 psec) frequency tunable from 644 to 704 nm. The frequency tuning ranges of mode‐locked rhodamine 6G and rhodamine B dye lasers have also been extended to cover 584 to 645 nm.