Passive stabilization of a synchronously pumped external-cavity surface-emitting InGaAs/InP multiple quantum-well laser by a coherent photon-seeding technique

A synchronously pumped external-cavity surface-emitting InGaAs/InP multiple quantum-well laser was passively stabilized by a coherent photon-seeding technique using an integrated output-coupling mirror. Both pulse duration and spectral width were reduced significantly and the time-bandwidth product was reduced by a factor of 30 to a near transform-limited value.