Semiconductor laser device for the generation of a periodic refractive index distribution and/or periodic gain distribution

摘要

In order to reduce the longitudinal modes generated by a semiconductor laser integrated in the laser homogeneous optical grating may be used. In principle, such lasers emit containing an optical grating for mode reduction, two longitudinal modes. Which consists of the layers 10 and 11 periodic semiconductor structure which is constructed by a series connection of at least two semiconductor materials having the band gaps E1 and E2, and the refractive indices n1 and n2 (E1 E2, n1 n2) can be operated as a : - passive interference filter, - active, some reinforcing interference filter, - optical narrow-band amplifier - single-mode laser, which emits only a single mode.