Abstract
Self-pulsation and ultrashort-pulse generation in laser diodes is a subject of great interest for a number of applications in telecommunications, optical data storage, photo-medicine and bio-photonics. Self-sustained pulsation in edge-emitting lasers is caused by saturable absorption (SA) in specially designed active or passive SA sections. Here, we report self-sustained pulsation and electrical-to-optical signal peaking in vertical-cavity surface-emitting lasers (VCSEL) having a sub-monolayer (SML) InGaAs quantum-dot (QD) active region and tapered oxide aperture.
© 2007 IEEE
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