Patent ID: 8306074
Filing Date: 2012-11-06
Classification: H01S

Abstract:
1. A monoblock laser cavity arrangement based on an external cavity partial reflector, said arrangement comprising: an Nd:YAG gain medium having one coated end surface, a juncture in the medium having a Brewster's angle for polarization, and another end surface; a passive Q-switch having one end surface optically facing said another end surface of the gain medium; an optical parametric oscillator crystal having one end surface and an output face, said one end surface of the optical parametric oscillator crystal optically facing another end surface of the Q-switch, wherein the output face of the optical parametric oscillator crystal has a high-reflection coating of HR@1064 nm and another surface coating of PR@1570 nm, which coatings serve to function as an output coupler on said output face of the optical parametric oscillator crystal; and an external cavity partial reflector having one end surface disposed to optically face said output coupler, wherein said external cavity partial reflector is a 1.5 micron external cavity reflector with one end surface with an anti-reflection coating of AR@1570 nm and another end surface coating of PR@1570 nm for an improved beam output.