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. 19, 2018
Filed:
Mar. 01, 2017
Lockheed Martin Corporation, Bethesda, MD (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
Apparatus and method for high-power multi-function millimeter-wavelength (THz-frequency) signal generation using OPO and DFG in a single cavity. In some embodiments, the OPO-DFG cavity includes an optical parametric oscillator (OPO) non-linear material that receives pump light Ihaving pump-light frequency and generates two different lower intermediate frequencies of light—an OPO-signal beam Iand a spatially/temporally overlapping OPO-idler beam I. A difference-frequency generator non-linear material then receives the two intermediate-frequency beams Iand I, and the DFG then generates a THz-frequency output signal that has a frequency equal to the difference between the two intermediate frequencies. In some embodiments, a single-piece crystal of non-linear material is used for both OPO and DFG functions. Some embodiments use a bow-tie ring having four mirrors that define the optical path: an I-beam-entry mirror, an I-light-extraction mirror to remove unconverted I-beam, an I-beam-extraction mirror, and an I-beam-extraction mirror, and a fifth I-beam-extraction mirror.