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US 2022/0268982 A1Published application
One-Way Circularly Polarized Light Generated by Propagation through Ch-GLC Films Doped with Light-Absorbing Dyes
AssigneeUniversity of Rochester
InventorsShaw Chen, Mitchell Anthamatten, Jane Ou
Life of this patent
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Abstract
An optical system that includes a cholesteric glassy liquid crystal film doped with a dye and configured to preferentially absorb light of a first handedness, such as left-hand circularly polarized (LCP) light, but pass light of the opposite handedness, such a right-hand circularly polarized (RCP) light. Adding an anti-reflection coating can further increase the transmission-to-reflection ratio.
Claims26
An optical device comprising:
- a cholesteric glassy liquid crystal film doped with a dye, wherein said film:
- preferentially absorbs a forward component of light incident on the film that is circularly polarized with handedness in a first direction as well as any backward component of the incident light that is circularly polarized with handedness in said first direction and has been reflected after passage through the doped film;
- and
- preferentially passes a forward component of the incident light that is circularly polarized with handedness in a second direction different from the first direction.
1 more element
The optical device of claim 21, in which the absorption band is at a shorter wavelength range than the stop band.
Dependencies are inferred from the claim text.