System and method for topological lasers generating and multiplexing optical beams with unbounded orbital angular momenta
AssigneeThe Regents of the University of California
InventorsBoubacar Kante, Babak Bahari
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Abstract
An optical integrated light source includes a plurality of topological ring resonators. Each of the topological ring resonators is defined by an interface between two distinct periodic structures having different topological invariants such that a one-way edge mode may be excited along the interface. A magnetic material is arranged to interact with the plurality of topological ring resonators such that the optical integrated light source is structured and configured to generate plural beams each carrying large orbital angular momentum.
Claims17
An optical integrated light source, comprising:
- a plurality of topological ring resonators, each of the topological ring resonators being defined by an interface between two distinct periodic structures having different topological invariants such that a one-way edge mode may be excited along the interface, wherein the topological ring resonators are each concentrically arranged with respect to one another;
- and
- a magnetic material arranged to interact with the plurality of topological ring resonators such that the optical integrated light source is structured and configured to generate plural beams each carrying orbital angular momentum.
A method for generating multiplexed, orbital angular momentum (OAM) optical beams, comprising:
- applying pump energy to an arrangement having plurality of topological ring resonators, each of the topological ring resonators being defined by an interface between two distinct periodic structures having different topological invariants such that a one-way edge mode may be excited along the interface wherein the topological ring resonators are each concentrically arranged with respect to one another;
- and
- while applying the pump energy, applying a static magnetic field to a magnetic material so that time-reversal symmetry is broken in the plurality of topological ring resonators.
An optical integrated light source, comprising:
- a series of alternating closed boundaries between two photonic crystals having different topological invariants such that a one-way edge mode may be excited along the interface, wherein the closed boundaries are concentric with one another;
- and
- a magnetic material arranged to interact with the series of alternating closed boundaries such that the optical integrated light source is structured and configured to generate plural beams each carrying orbital angular momentum.
Dependencies are inferred from the claim text.