Patent ID: 6661824
Filing Date: 2003-12-09
Classification: H01S

Abstract:
A semiconductor laser device, comprising:a first semiconductor laminated structure which is provided on a front-side region, with respect to the laser beam emitting direction, 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, with respect to the laser beam emitting direction, of the substrate and includes a second active layer for oscillating a second laser beam having a second wavelength band, wherein an emission direction of the first laser beam and an emission direction of the second laser beam are same, and a light-emitting spot of the second laser beam is above or below a light-emitting spot of the first laser beam, and wherein the first laser beam and the second laser beam are emitted from two immediately adjacent light-emitting spots on a front surface of the first semiconductor laminated structure.