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:
Apr. 08, 2003
Filed:
Jun. 06, 2000
Applicant:
Inventors:
Igor Bragin, Gottingen, DE;
Vadim Berger, Gottingen, DE;
Assignee:
Lambda Physik AG, Goettingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/22 ; H01S 3/223 ;
U.S. Cl.
CPC ...
H01S 3/22 ; H01S 3/223 ;
Abstract
A method and devices for preionizing the main discharge gas volume of a gas discharge laser are described. The method and devices provide a preionizing discharge to the main gas discharge volume from above or below the main gas discharge volume. In combination with a shielding arrangement which reduces the spread of the preionization discharge other than to the main gas discharge volume, the exposure of other laser components and gas volumes to said preionization discharge is thereby minimized.