| 摘要 |
PURPOSE:To easily extract the highly dense energy of a laser medium by a method wherein a pair of convex lenses, which enable parallel light rays to converge, are provided before and behind a laser medium, and a reflecting mirror provided with a V-shaped reflective surface is provided to one of the outsides of the lenses. CONSTITUTION:A pair of convex lenses 6A and 6B transmissive to laser rays are provided to an incident side and the other side of laser rays respectively sandwiching a laser medium 3 so as to face each other. A reflecting mirror 7 provided on the other side are formed into a cornered cube whose two reflective planes function in such a manner that one of them serves as an incident plane and the other functions as a returning plane. Laser rays incident on the mirror 7 are all reflected in parallel with the incident light rays, and the converging points of laser rays incident on a primary axis of the convex lenses are coincident with each other independently of the incident position. Light rays incident on and reflected from the mirror 7 become positively parallel through correction even if the mirror 7 deviates positionally. By these processes, a highly dense energy of a laser medium can be easily extracted. |
