Patent ID: 7773654

Claim:
A semiconductor laser apparatus comprising: a first semiconductor laser device having a first semiconductor layer that emits a light beam having a first wavelength; a second semiconductor laser device having a second semiconductor layer that emits a light beam having a second wavelength; and a third semiconductor laser device having a third semiconductor layer that emits a light beam having a third wavelength, wherein at least one of said first, second, and third wavelengths is different from another wavelength, said first semiconductor laser device has a first electrode on said first semiconductor layer, said second semiconductor laser device and said third semiconductor laser device are bonded onto said first semiconductor layer—of said first semiconductor laser device such that at least a portion of said first electrode of said first semiconductor laser device is exposed between said second semiconductor laser device and said third semiconductor laser device, said second semiconductor laser device has a fifth electrode on said second semiconductor layer, said third semiconductor laser device has a sixth electrode on said third semiconductor layer, said first semiconductor laser device further has an insulating film formed on said first semiconductor layer except a region on a light-beam-emission-point of said first semiconductor laser device, and a seventh electrode and an eighth electrode formed on said insulating film that are electrically isolated from said first electrode and are also electrically isolated from each other, said first electrode is electrically connected to said first semiconductor layer in the region on the light-beam-emission-point of said first semiconductor laser device, said seventh electrode and said fifth electrode face each other while being electrically connected to each other, and said eighth electrode and said sixth electrode face each other while being electrically connected to each other.