Patent ID: 6611544
Filing Date: 2003-08-26
Classification: H01S

Abstract:
A folded cavity surface emitting laser (FCSEL) comprising:a narrow bandwidth distributed Bragg reflector having a narrow wavelength range of a relatively high reflectivity response centered around a center wavelength, the narrow bandwidth distributed Bragg reflector to reflect photons having a wavelength within the narrow wavelength range; an active region over the narrow bandwidth distributed Bragg reflector, the active region formed to lase and emit photons at a wavelength within the narrow wavelength range and couple photons into the narrow bandwidth distributed Bragg reflector, the active region having a first angled facet and a second angled facet at opposite ends to reflect photons therein; and the narrow bandwidth distributed Bragg reflector to reflect photons having the wavelength within the narrow wavelength range back into the active region for amplification.