Optical frequency measurement and control using dual optical-frequency combs

US10067031B2 · kind B2 · utility

Assignees

• CALIFORNIA INSTITUTE OF TECHNOLOGY · US
• The Regents of the University of California · US
• The United States of America · US

Inventors

• Kerry Vahala · Pasadena, US
• John E. Bowers · Lompoc, US
• Kartik Srinivasan · Pasadena, US
• Scott B. Papp · Boulder, US
• Scott Diddams · Louisville, US

Key dates

• Filing date: May 8, 2017
• Grant date: Sep 4, 2018
• Expiry date: May 8, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2203/56
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A dual-comb optical-frequency comb generator includes a tunable comb-generating laser, a coarse-comb generator, a fine-comb generator, a second harmonic generator, a coarse-comb offset photodetector, a dual-comb offset photodetector, and a fine-comb photodetector. The coarse comb is self-referencing and coupled to the fine comb so as to enable absolute determination of the frequencies of the fine comb.