Patent ID: 7330495
Filing Date: 2008-02-12
Classification: H01S

Abstract:
1. A vertical cavity surface emitting laser diode, comprising: a semiconductor substrate; a first distributed Bragg reflector arranged on said substrate; a second distributed Bragg reflector including a plurality of layer pairs with each pair comprised of a first semiconductor layer and an aluminum oxide layer; a third distributed Bragg reflector arranged between said second distributed Bragg reflector and said active layer, said third distributed Bragg reflector including a plurality of layer pairs with each comprised of a third semiconductor layer and a fourth semiconductor layer; and an active layer sandwiched by said first distributed Bragg reflector and said second distributed Bragg reflector, wherein said pairs of said first semiconductor layer and said aluminum oxide layer are stacked, and wherein said first semiconductor layers and said aluminum oxide layers in said second distributed Bragg reflector each have a thickness of a quarter wavelength of an emitting wavelength of said laser diode, and wherein a lattice constant of said third and fourth semiconductor layers is substantially matched to a lattice constant of said substrate and substantially mismatched to said first semiconductor layer.