Patent ID: 10910791

Abstract:
A vertical-cavity surface-emitting laser (VCSEL) device includes a substrate, first and second-type doped distributed Bragg reflectors, first and second electrodes, an active layer, a surface relief layer having a surface relief indentation of a diameter (d4) ranging from 1.0-6.0 um, and a confinement member defining an aperture with a diameter (d2) ranging from 3.0-15 μm. The second electrode is a ring-shaped p-contact metal having an inner diameter (d3) ranging from 8-17 μm. The VCSEL device has a mesa structure that has a bottom mesa diameter (d1) ranging from 16-28 μm. The diameters satisfy the relation of d1>d2>d3>d4. The surface relief layer has a thickness equaling to n/4 times a wavelength of a laser beam generated by the active layer with n being positive even numbers.