The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2005
Filed:
May. 11, 2001
Tomoo Fujioka, Tokyo, JP;
Shigeru Yamaguchi, Hiratsuka, JP;
Tomoo Fujioka, Tokyo, JP;
Shigeru Yamaguchi, Hiratsuka, JP;
Other;
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 electrodesof different diameter are disposed vertically and concentrically. And laser medium is filled in the gap between the two cylindrical electrodesto define a cylindrical straight slab. Disposed at one end of the cylindrical top of the cylindrical straight slabis a ring-shaped trick mirror Mand also disposed at the center of the one end of the cylindrical straight slabis an output mirror Mto 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 slabis a w-axicon mirror M. The above construction eliminates the need for spacers between the two cylindrical electrodeswhich are required in a conventional gas laser.