US 12,352,921 B2
Spin-to-orbital angular momentum converter for light
Federico Capasso, Cambridge, MA (US); Antonio Ambrosio, Arlington, MA (US); Noah A. Rubin, Cambridge, MA (US); Robert C. Devlin, Cambridge, MA (US); and Yao-Wei Huang, Somerville, MA (US)
Assigned to PRESIDENT AND FELLOWS OF HARVARD COLLEGE, Cambridge, MA (US)
Appl. No. 16/647,433
Filed by PRESIDENT AND FELLOWS OF HARVARD COLLEGE, Cambridge, MA (US)
PCT Filed Sep. 14, 2018, PCT No. PCT/US2018/051208
§ 371(c)(1), (2) Date Mar. 13, 2020,
PCT Pub. No. WO2019/108290, PCT Pub. Date Jun. 6, 2019.
Claims priority of provisional application 62/559,320, filed on Sep. 15, 2017.
Prior Publication US 2024/0241288 A1, Jul. 18, 2024
Int. Cl. G02B 1/00 (2006.01)
CPC G02B 1/002 (2013.01) 18 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a first J-plate configured to convert an incident light state into multiple pure total angular momentum (TAM) states or a superposition of the multiple pure TAM states; and
a second J-plate cascaded with the first J-plate and configured to convert the multiple pure TAM states into multiple design TAM states or a combination of the multiple design TAM states;
wherein the first J-plate or the second J-plate transfers orthogonal polarized states to associated conjugate orthogonal polarized states with different orbital angular momentum (OAM) states.