HYBRID, SATURABLE REFLECTOR FOR MODE-LOCKING LASERS

摘要

A mode-locking device for a laser operating at a defined wavelength, has asubstrate, transparent to the defined wavelength, with a front side forreceivingincident radiation and a back side. An anti-reflection coating is formed onthe frontside to minimize reflection loss at the defined wavelength. A quantum wellstructureis arranged on the back side. A high reflectance structure is arranged behindthequantum well structure in such a way that an electric field peak in theincidentradiation substantially coincides with said quantum well structure. Thisdevice offersa more reliable and less costly approach for the production of non-linearmirrors sincethe layers of the dielectric stack do not have to be formed by epitaxialdeposition.