Patent ID: 6930024

Claim:
A method for fabricating a semiconductor laser device, the semiconductor laser device comprising: a first semiconductor laminated structure which is provided on a front-side region of a substrate and includes a first active layer for oscillating a first laser beam having a first wavelength band; and a second semiconductor laminated structure which is provided on a rear-side region of the substrate and includes a second active layer for oscillating a second laser beam having a second wavelength band, the method comprising the steps of: growing a first tentative semiconductor laminated structure having the same laminated structure as the second semiconductor laminated structure on the substrate; removing a front-side portion of the first tentative semiconductor laminated structure, thereby producing the second semiconductor laminated structure on the rear-side region of the substrate; growing a second tentative semiconductor laminated structure having the same laminated structure as the first semiconductor laminated structure on the front-side region of the substrate and on the second semiconductor laminated structure; and removing a portion of the second tentative semiconductor laminated structure above the second semiconductor laminated structure, thereby producing the first semiconductor laminated structure on the front-side region of the substrate.