Patent ID: 9160134
Filing Date: 2015-10-13
Classification: H01S

Abstract:
1. A laser comprising: a total reflective mirror comprising a body defining a first reflective surface, a metal film entirely coated on the first reflective surface, and at least one microstructure located on the metal film, the at least one microstructure is a convex ring-shaped structure, wherein a space is defined by the convex ring-shaped structure, the convex ring-shaped structure surrounds the space, and the metal film is sandwiched between the first reflective surface and the convex ring-shaped structure; an output mirror; a discharge lamp comprises two opposite ends, wherein the total reflective mirror and the output mirror are located separately on the two opposite ends of the discharge lamp; and an active laser medium; wherein the total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity, and the active laser medium is filled in the resonant cavity.