Systems and methods for diffractive coherent laser combining

US12332509B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Qiang Du · San Diego, US
• Russell Wilcox · Corona, US
• Tong Zhou · Overland Park, US
• Lawrence R. Doolittle · Walnut Creek, US
• Gang Huang · Nanhu, CN
• Derun Li · Concord, US

Key dates

• Filing date: Apr 22, 2021
• Grant date: Jun 17, 2025
• Expiry date: Apr 18, 2044

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/1301
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

This disclosure provides systems, methods, and apparatus related to optical systems. In one aspect, a method includes: generating a plurality of laser beams; receiving the plurality of laser beams at the point at a diffractive optical element, the diffracting optical element diffracting the plurality of laser beams to generate a plurality of output laser beams including a central laser beam and a plurality of side laser beams; measuring a power of at least two of the plurality of output laser beams generated by the diffractive optical element; determining a phase error in laser beams of the plurality of laser beams from the power of the at least two of the plurality of output laser beams; and changing the phase N−1 laser beams of the plurality of laser beams, with N being a number of the plurality of laser beams.