Optical bistability and hysteresis in a colliding pulse mode locked femtosecond dye laser
Review articleOpen access

AbstractWe describe the observation of optical bistability in a colliding pulse mode locked dye laser. Two lasing states can occur, one at 612 nm and with femtosecond pulse formation and the other at 570 nm and with a c.w. output. An hysteresis loop can be obtained plotting the output power as a function of the pump laser power. Control of the hysteresis can be accomplished by changing the beam focusing over the saturable absorber.

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