Patent ID: 7512167

Claim:
An integrated semiconductor laser device comprising: a first semiconductor laser element including a first emission region and having either a projecting portion or a recess portion; and a second semiconductor laser element including a second emission region and having either a recess portion or a projecting portion, wherein either said projecting portion or said recess portion of said first semiconductor laser element is fitted to either said recess portion or said projecting portion of said second semiconductor laser element, either said first semiconductor laser element or said second semiconductor laser element further includes a first ridge portion constituting said projecting portion, either said projecting portion or said recess portion of said first semiconductor laser element is fitted to either said recess portion or said projecting portion of said second semiconductor laser element through a bonding layer, said first emission region and said second emission region are aligned substantially along the same line extending in a direction of stacking of semiconductor layers, either said second semiconductor laser element or said first semiconductor laser element further includes said recess portion, either said second semiconductor laser element or said first semiconductor laser element further includes: a second ridge portion; and a current blocking layer formed to cover the side surfaces of said second ridge portion with a thickness larger than the height of said second ridge portion and an opening provided on a region corresponding to said second ridge portion, said opening of said current blocking layer constitutes said recess portion of either said second semiconductor laser element or said first semiconductor laser element, and said first ridge portion constituting said projecting portion is fitted in said opening of said current blocking layer constituting said recess portion.