Patent ID: 6829272
Filing Date: 2004-12-07
Classification: H01S

Abstract:
A laser device comprising: an n-doped cladding region and a p-doped cladding region; an optical guiding region disposed between the n-doped cladding region and the p-doped cladding region; and an active region disposed within the optical guiding region;wherein the laser device further comprises at least one optical confinement region disposed between the active region and at least one of the cladding regions, the at least one optical confinement region having a lower refractive index than the at least one of the cladding regions, the composition of the n-type cladding region is selected such that the energy of the DX level in the n-type cladding region is greater than the Fermi level in the n-type cladding reaction, and the laser device emits light in the visible region.