US 12,436,033 B2
Apparatus and method to measure direction and polarization of electromagnetic waves
Stanley Pau, Tucson, AZ (US)
Assigned to Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
Appl. No. 18/253,647
Filed by Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
PCT Filed Nov. 18, 2021, PCT No. PCT/US2021/072482
§ 371(c)(1), (2) Date May 19, 2023,
PCT Pub. No. WO2022/109579, PCT Pub. Date May 27, 2022.
Claims priority of provisional application 63/116,299, filed on Nov. 20, 2020.
Prior Publication US 2024/0011836 A1, Jan. 11, 2024
Int. Cl. G01J 4/04 (2006.01)
CPC G01J 4/04 (2013.01) 28 Claims
OG exemplary drawing
 
1. A detector system for measuring direction and polarization of an electromagnetic wave, comprising:
a first detector configured to receive and measure an irradiance of an incoming electromagnetic radiation, the first detector positioned such that a normal vector to the first detector is pointing in a first direction;
a second detector configured to receive and measure the irradiance of the incoming electromagnetic radiation, the second detector positioned such that a normal vector to the second detector is pointing in a second direction; and
a third detector configured to receive and measure the irradiance of the incoming electromagnetic radiation, the third detector positioned such that a normal vector to the third detector is pointing in a third direction, wherein:
the first, the second and the third directions are different from one another,
each of the first, second and third detectors having a flat detection surface for receiving the incoming electromagnetic radiation each facing a different direction compared to one another,
at least one of the first, the second or the third detectors is further configured to obtain polarization information associated with the incoming electromagnetic radiation, and
the measured irradiances from the first, the second and the third detectors and the polarization information enable identification of a direction of propagation and a polarization state of the incoming electromagnetic radiation.