Patent ID: 8331412
Filing Date: 2012-12-11
Classification: H01S

Abstract:
1. A vertical-cavity surface-emitting semiconductor laser diode having a resonator with a first distributed Bragg reflector, an active zone which has a p-n junction and is embedded into a sequence of semiconductor layers, and a second distributed Bragg reflector, the semiconductor laser diode having an emission wavelength λ, characterized by a periodic structure arranged within the resonator as an optical grating made of a semiconductive material and a dielectric material; a main plane of extension of the periodic structure being arranged substantially perpendicularly to a direction of emission of the semiconductor laser diode; and the periodic structure being in direct contact with at least one of the semiconductor layers and with at least one of the distributed Bragg reflectors, and wherein the periodic structure is made of at least one material of the semiconductor layers and at least one material of the two distributed Bragg reflectors, the period of the periodic structure is at most λ/n, n being a function of the index of refraction of the semiconductive material and/or the index of refraction of the dielectric material, and n is the higher of the two indices of refraction.