Locally-outcoupled cavity resonator having unidirectional emission

US7031365B2 · kind B2 · utility

Assignee

• Xerox Corporation · US

Inventors

• Michael A. Kneissl · Berlin, DE
• Noble M. Johnson · Menlo Park, US
• David K. Biegelsen · Portola Valley, US
• Richard Chang · Hamden, US
• A. Douglas Stone · New Haven, US
• Grace D. Chern · New Haven, US
• Hakan E. Tureci · New Haven, US
• Joseph Zyss · Sceaux, FR

Key dates

• Filing date: May 2, 2003
• Grant date: Apr 18, 2006
• Expiry date: Jan 28, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/40
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A locally-outcoupled optical resonator has whispering gallery modes existing in a nearly circular resonator. Light is outcoupled by providing a local perturbing feature on the perimeter of the locally-outcoupled cavity resonator. The perturbing feature provides an outcoupling or loss mechanism that asymmetrically interacts with circulating whispering gallery modes, thereby making the resonator capable of uni-directional output.