Patent ID: 8699541
Filing Date: 2014-04-15
Classification: H01S

Abstract:
1. Unstable optical resonator device comprising: a spherical back mirror; a spherical outcoupling mirror; wherein a focal point lies between the back mirror and the outcoupling mirror; an optically active medium with a rectangular medium cross-section arranged between the back mirror and the outcoupling mirror; and a scraper, which is arranged between the back mirror and the outcoupling mirror; wherein the scraper has a first leg and a second leg located transversely to the first leg, said legs defining a free space with a first side delimited by the first leg and a second side delimited by the second leg; wherein the first side and the second side are orthogonal to one another; wherein the scraper has an L shape at least on the first side and the second side; and wherein the scraper has a compact outcoupling surface in the shape of an L.