Patent ID: 6570904
Filing Date: 2003-05-27
Classification: H01S

Abstract:
A structure of a two-mirror 3-dimensional figure-â€œ8â€  ring-type resonant cavity, the structure comprising:a pumping source emitting a pump light; a 3-dimensional (3-D) ring-type resonant cavity including two planar concave mirrors arranged by face-to-face for the curving surfaces of the two planar concave mirrors, wherein the two planar concave mirrors are aligned on a cavity axis and is separated by a distance of L; and a planar convex lens located between the pumping source and the 3-dimensional ring-type resonant cavity, so as to work together for focusing the pump light, wherein a 3-D figure-â€œ8â€  laser path is built in the 3-D ring-type resonant cavity between the two planar concave mirrors when the pump light enters the 3-D ring-type resonant cavity at a location by a distance of d from the cavity axis by a propagating direction parallel to the cavity axis, whereby a laser light is generated.