Patent ID: 9350139
Filing Date: 2016-05-24
CPC Classification: H01S

Claim Text:
1. A vertical-cavity surface-emitting laser diode comprising: a first resonator that has a plurality of semiconductor layers comprising a first current narrowing structure having a first conductive region and a first non-conductive region; a first electrode that supplies electric power to drive the first resonator; a second resonator that has a plurality of semiconductor layers comprising a second current narrowing structure having a second conductive region and a second non-conductive region and that is formed side by side with the first resonator, the second current narrowing structure being formed in same current narrowing layer as the layer where the first current narrowing structure is formed; a coupling portion that couples the plurality of semiconductor layers in the first resonator with the plurality of semiconductor layers in the second resonator respectively; and a second electrode that drives the second resonator to control a phase of light to be fed back to the first resonator side when the light propagated from the first resonator side to the second resonator side is fed back to the first resonator side, the second electrode being formed on the second resonator, wherein: an equivalent refractive index of the coupling portion is smaller than an equivalent refractive index of each of the first resonator and the second resonator.