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:
Jul. 10, 2001
Filed:
Apr. 07, 1998
Alfred Douglas Stone, North Haven, CT (US);
Richard Kounai Chang, Hamden, CT (US);
Jens Uwe Noeckel, Dresden, DE;
Yale University, New Haven, CT (US);
Abstract
An asymmetric resonant optical cavity is constructed of an optically transmissive dielectric material having an index of refraction n. The cavity is configured as an oval cross-section of area A, having major and minor axes. An optical input couples an optical signal of wavelength &lgr; into the cavity. An output coupler is positioned in a near-field region of a surface point of the cavity thereby enabling coupling thereinto of optical energy of wavelength &lgr;. The surface point on the cavity is determined by a minimum value of an expression which relates the Sin of the angle of incidence, at an angle ø, to the curvature of the outer surface of the cavity. Further, the index of refraction n of the cavity's dielectric is chosen so as to avoid emission of physically separated beams at the point of exit of a beam