Patent ID: 7535945
Filing Date: 2009-05-19
Classification: H01S

Abstract:
1. A semiconductor laser apparatus comprising: a first semiconductor laser device having a first semiconductor layer emitting a light beam of a first wavelength on a first substrate; a second semiconductor laser device having a second semiconductor layer emitting a light beam of a second wavelength on a second substrate; and a a third semiconductor laser device having a third semiconductor layer emitting a light beam of a third wavelength on a third substrate, wherein said first, second and third wavelengths are different from each other and at least one of said second and third substrates is composed of a material different from that of said first substrate, said first semiconductor laser device has a first electrode on a first surface thereof, said second semiconductor laser device has a first electrode on a first surface thereof, said third semiconductor laser device has a first electrode on a first surface thereof, said first electrode of said second semiconductor laser device and said first electrode of said third semiconductor laser device are bonded to said first surface of said first semiconductor laser device with an insulating film sandwiched therebetween, and said first electrode of said first semiconductor laser device, said first electrode of said second semiconductor laser device and said first electrode of said third semiconductor laser device are electrically isolated from each other.