Coherent light generators – Particular active media – Gas
Reexamination Certificate
2005-05-10
2005-05-10
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular active media
Gas
C372S061000
Reexamination Certificate
active
06891873
ABSTRACT:
The present invention provides a cylindrical slab type gas laser for generating an excellent laser beam having substantially Gaussian intensity distribution of the focussed output laser beam. For this end, a pair of cylindrical electrodes11, 12of different diameter are disposed vertically and concentrically. And laser medium is filled in the gap between the two cylindrical electrodes11, 12to define a cylindrical straight slab1. Disposed at one end of the cylindrical top of the cylindrical straight slab1is a ring-shaped trick mirror M1and also disposed at the center of the one end of the cylindrical straight slab1is an output mirror M2to pass a part of the light and to reflect a part of the remaining light. On the other hand, disposed at the other end of the cylindrical straight slab1is a w-axicon mirror M3. The above construction eliminates the need for spacers between the two cylindrical electrodes11, 12which are required in a conventional gas laser.
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Fujioka Tomoo
Yamaguchi Shigeru
Dellett & Walters
Fujioka Tomoo
Harvey Minsun Oh
Nguyen Tuan N.
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