LASER

摘要

A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a microstructure. The microstructure is convex ring-shaped structure. The convex ring-shaped structure has a height and a width, and both the height and the width are in a range from about 0.5λ to about 2λ, while λ is a working wavelength of the laser.

主权项

1. A laser comprising:
a total reflective mirror comprising a body defining a first reflective surface, a metal film coated on the first reflective surface, and at least one microstructure, the at least one microstructure is a convex ring-shaped structure; an output mirror, a discharge lamp, wherein the total reflective mirror and the output mirror are located on 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.