Patent ID: 8816319
Filing Date: 2014-08-26
Classification: H01L,H01S

Abstract:
1. An optical device comprising: a gallium and nitrogen containing substrate including a surface region and a first lattice constant; a strained region overlying the surface region, the strained region having a second lattice constant, the second lattice constant being larger than the first lattice constant; a strain control region having a third lattice constant, the third lattice constant being substantially equivalent to the second lattice constant, the strain control region being configured to maintain at least a quantum well region within a predetermined strain state; an optical confinement region overlying the strain control region; and a plurality of quantum well regions overlying the optical confinement region, each of the plurality of quantum well regions having a fourth lattice constant, the fourth lattice constant being substantially equivalent to the second lattice constant, whereupon the strain control region has a higher bandgap than the strained region and the quantum well regions.