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:
Jun. 02, 1998
Filed:
Jul. 18, 1996
Jurgen Kleinschmidt, Weissenfels, DE;
Peter Heist, Jena, DE;
Abstract
A laser, especially an excimer laser, is designed to generate narrow-band radiation and comprises a laser resonator, including two reflecting elements (12, 14) between which there is disposed a laser active medium (10), and further comprises a group of several refractive dispersive elements (32, 34) arranged in the laser beam path and each deflecting, incident light at an angle (.gamma..sub.a, .gamma..sub.b) which is specific of the wavelength of the incident light. It is provided to reduce variations of the emission wavelength which are temperature responsive and time dependent during burst operation by giving at least one of the refractive dispersive elements (32) a refractive index which increases as the temperature goes up and at least one of these elements (34) a refractive index which drops as the temperature rises.