VERTICAL-CAVITY SURFACE-EMITTING LASER WITH AN INTRACAVITY QUANTUM-WELL OPTICAL ABSORBER

摘要

A laser (20) comprises a first contact to receive an active region controlsignal, a second contact to receive an optical absorber control signal, and asandwich of distributed Bragg reflector mirror stacks. Each distributed Braggreflector mirror stack (36, 60) has an alternate doping with respect to anadjacent distributed Bragg reflector mirror stack. An active region (26) ispositioned in the sandwich to provide optical gain in response to the activeregion control signal. An optical absorber (150) is positioned in thesandwich. The optical absorber has wavelength dependent absorption in responseto the optical absorber control signal. The device of the invention may beutilized as an integrated detector, a self-pulsating laser, a high speedintracavity modulator, or an optical pick-up device.