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:
Nov. 17, 1981
Filed:
Nov. 19, 1979
Irwin Schneider, Alexandria, VA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Broadly tunable, c.w. laser action in the ir(infrared) spectral region is obtained from (F.sub.2.sup.+).sub.A color centers in an alkali halide crystal having F.sub.A, F.sub.B, F.sub.A ', F.sub.B ' (F.sub.2).sub.A and (F.sub.2.sup.+).sub.A color centers in a dynamic equilibrium. The laser material is prepared by additively coloring an alkali halide crystal, exposing the colored crystal to light in the high-energy edge (i.e., between 450-300 nm) of the F-center absortion range at a temperature from about 253K to about 300K, cooling the crystal to a temperature not greater than 100K, and re-exposing the crystal to the same light to create a dynamic equilibrium state in which (F.sub.2.sup.+).sub.A centers are present.