Patent ID: 6646975
Filing Date: 2003-11-11
Classification: B82Y,G11B,H01L,H01S

Abstract:
An optical integrated unit comprising:an integrated laser array including a first laser element portion and a second laser element portion integrated side by side on a common substrate, said first laser element portion releasing laser light of a first wavelength, and said second laser element portion releasing light of a second wavelength different from said first wavelength in a direction substantially parallel to the laser light of said first wavelength; and a detector configured to detect first reflected return light which is part of the laser light of said first wavelength and second reflected return light which is part of the laser light of said second wavelength, said detector being placed sideward of the integrated laser array so that a plane which includes axes of the laser lights released from the first and second laser element portions intersects the detector; wherein the detector is configured to receive and detect the first reflected return light and the second reflected return light at a common location within the detector.