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US 12,461,297 B2Granted
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
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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 through the doped film a forward component of the incident light that is circularly polarized with handedness in a second direction that is different from the first direction.
1 more element
Dependencies are inferred from the claim text.