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:
Aug. 11, 1998
Filed:
Mar. 10, 1997
Mark Wagshul, Huntington, NY (US);
Eli Miron, Omer, IL;
The Research Foundation of State University of New York, Albany, NY (US);
The Trustees of Princeton University, Princeton, NJ (US);
Abstract
An apparatus for spectral narrowing of high power diode laser arrays includes a high power diode laser array configured for production of an output light beam, a collimator configured for collimation of the output light beam, and a half-wave plate and polarizing beamsplitter positioned to receive the output light beam and to separate it into a feedback beam and a usable beam. The apparatus further includes an interference filter positioned to receive the feedback beam and form it into a filtered feedback beam. The filter has a narrow passband about a desired wavelength. The apparatus still further includes a cat's eye reflector to receive the feedback beam, direct it through the interference filter, and couple the filtered feedback beam into the diode laser array. A method for spectral narrowing of high-power diode laser arrays includes the steps of collimating the light output from the high power diode laser array; passing it through a beamsplitter to obtain feedback and usable beams; passing the feedback beam through an interference filter to form a filtered feedback beam; and coupling the filtered feedback beam back into the diode laser array.