US 11,988,941 B1
Fiber coupled multi-frequency shifter
Khanh Le, Bellwood, IL (US); John Lekavich, Bellwood, IL (US); and Bao Tran, Saratoga, CA (US)
Assigned to IntraAction Corp., Bellwood, IL (US)
Filed by Khanh Le, Bellwood, IL (US); John Lekavich, Bellwood, IL (US); and Bao Tran, Saratoga, CA (US)
Filed on Jun. 10, 2023, as Appl. No. 18/332,718.
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/365 (2006.01); G02F 1/35 (2006.01)
CPC G02F 1/365 (2013.01) [G02F 1/353 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A frequency shifter, comprising:
a lens adapted to receive a laser beam;
a fiber cable to distribute the laser beam to an array of optical elements, wherein an optical element of the array of optical elements comprises a surface with one or more steps formed thereon;
a conductive layer formed on the surface with the one or more steps;
one or more crystals secured to each step; and
electrodes positioned on two surfaces of each of the one or more crystals.