Patent · US Active

High time-resolution ultrasensitive optical detector, using grating coupling

US7763854B2 · kind B2 · utility

9Cited by

9References

14Claims

0Family size

Assignee

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

Inventor

Laurent Frey · Fontaine, FR

Key dates

Filing date	Sep 26, 2007
Grant date	Jul 27, 2010
Priority date	—
Expiry date	Jan 20, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG01J1/0407
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

This detector is intended to detect at least one photon and comprises a dielectric substrate (30), of index nO; a detecting element (32) forming a serpentine, placed on the substrate and generating a signal using the energy of the photon(s); a dielectric grating, formed of lines of index nH, alternating with lines of index nB, avec nH>nO and nH>nB, the grating being placed above the detecting element, the set grating-element presenting a resonant absorption in a given incidence and for a given polarisation; and a superstratum (40) having a refractive index ni, this superstratum being placed above the one-dimensional dielectric grating, nH being furthermore greater than ni.

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