Patent ID: 7551659
Filing Date: 2009-06-23
Classification: H01L,H01S

Abstract:
1. A semiconductor laser apparatus comprising: an electrically conducting package; an electrically conducting mount provided on said package; first, second, and third terminals that are provided on said package and isolated from said package; a fourth terminal that is provided on said package and electrically connected to said mount; and first, second, and third semiconductor laser devices that are provided on said mount, each having a first electrode, wherein said first terminal and said second terminal are arranged along a first direction, said third terminal and said fourth terminal are arranged along a second direction that crosses with said first direction, said first, second, and third semiconductor laser devices are arranged such that said first electrode of said first semiconductor laser device is located closer to said first terminal than said first electrodes of said second and third semiconductor laser devices, said first electrode of said second semiconductor laser device is located closer to said second terminal than said first electrodes of said first and third semiconductor laser devices, and at least a portion of said first electrode of said third semiconductor laser device is located between said first electrode of said first semiconductor laser device and said first electrode of said second semiconductor laser device in said first direction, said first terminal and said first electrode of said first semiconductor laser device are connected through a first wire, and said second terminal and said first electrode of said second semiconductor laser device are connected through a second wire, said third semiconductor laser device further has a second electrode that is electrically connected to said mount, and said first semiconductor laser device and said second semiconductor laser device are provided on said third semiconductor laser device, said third semiconductor laser device has a first surface and has an insulating film formed on said first surface excluding a region of said first surface corresponding to an emission point, said first electrode of said third semiconductor laser device is formed at least in said region corresponding to the emission point, said first electrode of said first semiconductor laser device is formed on said insulating film on one side of said region corresponding to the emission point of said third semiconductor laser device, said first electrode of said second semiconductor laser device is formed on said insulating film on the other side of said region corresponding to the emission point of said third semiconductor laser device, and said first and second semiconductor laser devices are located with a spacing therebetween above said region corresponding to the emission point of said third semiconductor laser device, and said third terminal and said first electrode of said third semiconductor laser device are connected through a third wire via said spacing between said first and second semiconductor laser devices.