Patent ID: 8848755

Claim:
An optical device comprising: a gallium and nitrogen containing substrate comprising a first crystalline surface region orientation, the first crystalline surface region orientation being non-polar or semi-polar; a current source; a first active region comprising a barrier layer and a first emission layer, the first emission layer being characterized by a first gain peak wavelength and a first resistance, the first active region being electrically coupled to the current source, the first gain peak wavelength being based on a first amount of current received from the current source; a second active region comprising a second emission layer, the second emission layer being characterized by a second gain peak wavelength and a second resistance, the second active region being electrically coupled to the current source, the second peak wavelength being based on a second amount of current received from the current source, a ratio between the first amount of current and the second amount of current being a function of a ratio between the first resistance and the second resistance, and wherein a difference between the first gain peak wavelength and the second gain peak wavelength is at least 1.5 nm; a first cavity member overlying the first emission layer, the first cavity member being configured to emit radiation at a wavelength of about 430 nm to 480 nm or at a wavelength of about 505 nm to 540 nm; a second cavity member overlying the second the emission layer; and an optical member for combining emission from the first cavity member and from the second cavity member.