Patent ID: 6674785
Filing Date: 2004-01-06
Classification: B82Y,H01S

Abstract:
A vertical-cavity, surface-emission-type laser diode comprising:a semiconductor substrate; and an optical cavity structure provided on or above said semiconductor substrate, said optical-cavity structure comprising an active region containing at least one active layer that produces a laser beam, and upper and lower reflectors sandwiching said active region to form said optical cavity, said lower reflector including a semiconductor distributed Bragg reflector having a refractive index that changes periodically, said lower reflector reflecting an optical beam incident thereto by diffraction, said semiconductor distributed Bragg reflector comprising a low-refractive-index layer of AlxGa1-xAs (0yGa1-yAs (0&lE;ywherein a non-optical recombination elimination layer is provided between said active layer and said lower reflector including an interface between said lower reflector and said active region.