US 11,927,777 B2
Plasma dispersion effect for metasurface tuning
Aditya Jain, Minneapolis, MN (US); Zoran Jandric, Minneapolis, MN (US); Dan Mohr, St. Paul, MN (US); Kevin A. Gomez, Eden Prairie, MN (US); and Krishnan Subramanian, Shakopee, MN (US)
Assigned to LUMINAR TECHNOLOGIES, INC., Orlando, FL (US)
Filed by Luminar Technologies, Inc., Orlando, FL (US)
Filed on Jul. 30, 2020, as Appl. No. 16/943,927.
Claims priority of provisional application 62/948,234, filed on Dec. 14, 2019.
Prior Publication US 2021/0181378 A1, Jun. 17, 2021
Int. Cl. G02B 5/00 (2006.01); G01S 7/481 (2006.01); G02B 1/00 (2006.01); G02B 6/122 (2006.01); G02B 27/00 (2006.01); G02F 1/29 (2006.01); G02F 1/313 (2006.01)
CPC G02B 5/008 (2013.01) [G01S 7/481 (2013.01); G01S 7/4814 (2013.01); G01S 7/4817 (2013.01); G02B 1/002 (2013.01); G02B 1/007 (2013.01); G02B 6/1226 (2013.01); G02B 27/0087 (2013.01); G02F 1/292 (2013.01); G02F 1/3133 (2013.01); G02F 2202/30 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A metasurface comprising:
a number of cells arranged on a substrate, each of the cells including:
a high-index dielectric block including an interface between a positively-doped material and a negatively-doped material; and
electrodes configured to provide a voltage differential across the high-index dielectric block to flow current along a current path that passes through the high-index dielectric block, at least a portion of the current path being substantially parallel to a plane defined by the metasurface; and
a controller that dynamically alters a voltage differential supplied to the electrodes of each of the cells to alter a refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.