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:
Sep. 10, 1991
Filed:
Jun. 26, 1990
Walter R Bosenberg, Monmouth Junction, NJ (US);
Cornell Research Foundation, Inc., Ithaca, NY (US);
Abstract
A walkoff-compensated frequency conversion system such as an optical parametric oscillator includes a pair of nonlinear crystals, such as Beta-Barium Metaborate, aligned in an optical cavity with their optical axes at an angle .THETA. with respect to the axis of the cavity. The crystals are oppositely disposed with respect to the cavity axis so that the angle between their respective optical axes is 2.THETA.. In an optical parametric oscillator, the crystals are pumped to produce optical parametric luminescence and frequency conversion, the luminescence being emitted as signal and idler beams. The opposite arrangement of the optical axes of the crystals causes the pumping beam to walk off the signal beam in the first crystal and to walk on the signal beam in the second crystal. Similar walkoff compensation is provided in other frequency conversion systems wherein crystal pairs are oppositely disposed along a cavity optical axis.