Patent ID: 6351476
Filing Date: 2002-02-26
Classification: H01L,H01S

Abstract:
A tunable semiconductor laser system, comprising;an edge emitter or VCSEL laser including first and second reflective members, upper and lower confining regions of opposite type semiconductor material and a semiconductor active region positioned between the upper and lower confining regions of opposite type semiconductor material, wherein the first and second reflective members are positioned at opposing edges of the active and confining regions, the laser producing an output beam; a wavelength tuning member monolithically formed with the laser; a frequency sensor coupled to the laser; and a control loop coupled to the frequency sensor and the tuning member, wherein in response to a detected change in frequency the control loop sends an adjustment signal to the tuning member and the tuning menber adjusts a voltage or current supplied to the laser to provide a controlled frequency and power of an output beam.