Cylindrical straight slab type gas laser

摘要

A cylindrical slab type gas laser for generating a laser beam having substantially Gaussian intensity distribution when focussed by a lens. A pair of cylindrical electrodes (11, 12) of different diameters are disposed vertically and concentrically and laser medium fills a gap between the two cylindrical electrodes (11, 12) to define a cylindrical straight slab (1). Disposed at a first end of the cylindrical straight slab (1) is a ring-shaped trick mirror (M1) which surround a central output mirror (M2) which allows a part of the light to pass therethrough and reflects a part of the remaining light. At the other end of the cylindrical straight slab (1) is a w-axicon mirror (M3) . The above construction eliminates the need for spacers between the two cylindrical electrodes (11, 12) which are required in a conventional gas laser. <IMAGE>