Patent · US Active

Device for measuring and controlling the wave-front of a coherent light beam

US9466938B2 · kind B2 · utility

10Cited by

3References

20Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Antoine Dupret · Orsay, FR
Sylvain Gigan · Paris, FR
François Ramaz · Le Kremlin-Bicêtre, FR
Gilles Tessier · Paris, FR
Arnaud Verdant · Meylan, FR

Key dates

Filing date	Dec 4, 2013
Grant date	Oct 11, 2016
Priority date	—
Expiry date	Dec 4, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/005
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention concerns a system for measuring and controlling the wave-front of a coherent light beam (32), comprising: a device for generating a reference light beam (36) that is coherent with said coherent light beam (32); a partially reflective monolithic device (38) comprising an array of elementary cells, each elementary cell comprising at least one element (40) for measuring a portion of the incident wave interfering between the coherent light beam and the reference light beam and a phase modulation element (42) for modulating the phase of the reflected beam; and a control device (46) for controlling said phase modulation element making use of the information from the associated measuring element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.