Abstract

We demonstrate the application of a type II Al_xGa_1−xAs/AlAs multiple quantum well as a fast saturable absorber in a hybridly mode-locked dye laser. Type II multiple quantum wells are promising for this application because of the fast recovery of the saturated absorption with picosecond or even subpicosecond time constants. We obtain almost transform-limited pulses as short as 0.9 psec for a type II sample with a recovery time of 2.3 psec.

© 1991 Optical Society of America

Collision-induced pulse shortening in a mode-locked linear-cavity NaCl color-center laser with an InGaAs/InP multiple-quantum-well saturable absorber

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