Patent ID: 7830944
Filing Date: 2010-11-09
Classification: B82Y,H01S

Abstract:
1. A surface-emitting laser comprising an active layer between a first distributed Bragg reflector and a second distributed Bragg reflector, wherein the first distributed Bragg reflector is formed so as to have a resonant mode and a first longitudinal mode different from the resonant mode as included in a first reflectivity stop band of the first distributed Bragg reflector, and so as to have a second longitudinal mode as excluded from the first reflectivity stop band; the second distributed Bragg reflector is formed so as to have the resonant mode as included in a second reflectivity stop band of the second distributed Bragg reflector, the second reflectivity stop band having a different center wavelength from that of the first reflectivity stop band; the resonant mode, the first longitudinal mode, and the second longitudinal mode have different wavelengths from one another; and lasing oscillation is suppressed in the first longitudinal mode and in the second longitudinal mode.