US 12,007,276 B2
Sensor for hyperspectral imaging based on a metasurface-integrated light detector array
Rohith Chandrasekar, Princeton, NJ (US); Amr Shaltout, Palo Alto, CA (US); Vladimir Shalaev, West Lafayette, IN (US); Alexander Chubykin, West Lafayette, IN (US); and Alexei Lagutchev, West Lafayette, IN (US)
Assigned to Purdue Research Foundation, West Lafayette, IN (US)
Filed by Purdue Research Foundation, West Lafayette, IN (US)
Filed on Mar. 22, 2019, as Appl. No. 16/362,598.
Claims priority of provisional application 62/646,879, filed on Mar. 22, 2018.
Prior Publication US 2020/0025610 A1, Jan. 23, 2020
Int. Cl. G01J 3/02 (2006.01); G01J 3/28 (2006.01); G01J 3/44 (2006.01); G01N 21/19 (2006.01); G01N 21/25 (2006.01)
CPC G01J 3/0237 (2013.01) [G01J 3/2803 (2013.01); G01J 3/44 (2013.01); G01N 21/19 (2013.01); G01N 21/251 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A spectroscopic device, comprising:
a. a unitary surface having an array of transmissive metasurfaces configured to interact with an incident light reflected from a specimen, wherein each transmissive metasurface of the array of transmissive metasurfaces is positioned to interact with a different respective portion of the incident light; and
b. a CCD array including a plurality of pixels integrated with the array of transmissive metasurfaces such that each transmissive metasurface is associated with a unique pair of pixels of the plurality of pixels, thereby forming a plurality of unique pairs of pixels,
wherein each transmissive metasurface is configured to direct Left circularly polarized (LCP) components of the respective portion of the incident light on the transmissive metasurface to a first pixel of the unique pair of pixels and Right circularly polarized (RCP) components of the respective portion of the incident light on the transmissive metasurface to a second pixel of the unique pair of pixels,
wherein the plurality of unique pairs of pixels collectively form a spectroscopically resolved image of the specimen.