Patent ID: 8638828

Claim:
An optical device comprising: a gallium and nitrogen containing substrate having a first crystalline surface region orientation which is non-polar or semi-polar; an active region comprising a barrier layer and at least one light emission layer, the at least one light emission layer having a graduated profile associated with a peak emission wavelength gradient which has a deviation of about 1 to 40 nm; a first cavity member overlying a first portion of the at least one light emission layer, the first portion of the at least one light emission layer being associated with a first wavelength, the first cavity member being characterized by a length of at least 100 μm and a width of at least 0.5 μm the first cavity member being configured to emit radiation at a wavelength of about 430 nm to 540 nm; a second cavity member overlying a second portion of the at least one light emission layer, the second portion of the at least one light emission layer being associated with a second wavelength, a difference between the first wavelength and the second wavelength being less than 30 nm, the second cavity member being characterized by a length of at least 100 μm and a width of at least 0.5 μm; and an optical member for combining emission from the first and second cavity members.