Abstract
Stable passive mode-locking of a cw rhodamine 6G dye laser has been achieved using a simple, end-pumped, internal lens cavity. Direct measurements using an ultra-fast image converter streak camera, with picosecond time resolution, show that the laser output consists of isolated picosecond pulses separated by the 8 nsec round-trip time of the cavity. Pulse durations as short as 4.3 psec have been observed.
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