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. 01, 2014
Filed:
Sep. 20, 2011
Mary K. Salit, Plymouth, MN (US);
Kenneth Salit, Plymouth, MN (US);
Paul E. Bauhahn, Fridley, MN (US);
Mary K. Salit, Plymouth, MN (US);
Kenneth Salit, Plymouth, MN (US);
Paul E. Bauhahn, Fridley, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A ring laser gyroscope includes active cavity containing gain medium, first reflective surfaces coupled to active cavity, medium exciter to excite gain medium, second reflective surfaces coupled to first passive cavity, and third reflective surfaces coupled to second passive cavity. Excited gain medium induces first and second laser fields within active cavity. First plurality of reflective surfaces includes first, second, and third reflective surfaces that reflect light within active cavity. Second plurality of reflective surfaces includes first, fourth, and fifth reflective surfaces that reflect light within first passive cavity. Third plurality of reflective surfaces includes fourth, sixth, and seventh reflective surfaces that reflect light within second passive cavity. First and fourth reflective surfaces are partially transmissive such that they both transmit and reflect light. Second or third cavities induce frequency dependent phase shift on light traveling through ring laser gyroscope causing anomalous dispersion of first and second laser fields passing through gain medium.