Patent ID: 9735546
Date: 2017-08-15
CPC Classifications: G06F,H01L,H01S

Claim:
1. A vertical cavity surface emitter laser (VCSEL) comprising: a first distributed Bragg reflector (DBR), a second DBR, and an active region situated between the first and second DBRs, wherein each of the first and second DBRs includes multiple DBR layers, wherein each DBR layer comprises a material having different optical properties than a material of an adjacent DBR layer, wherein each DBR layer of the first DBR is a bulk layer that does not include a quantum well and has a refractive index that differs from an adjacent DBR layer, and wherein a single interior DBR layer of the first DBR includes an n-doped layer and a p-doped layer; such that the single interior DBR layer and a corresponding single adjacent DBR layer form a phototransistor within the first DBR; wherein a thickness of the single interior DBR layer is substantially equal to a quarter wavelength of light emitted from the active region.