Dynamic non-reciprocal meta-surfaces with arbitrary phase reconfigurability based on photonic transition in meta-atoms

Journal Article · Mon Jan 11 00:00:00 EST 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4939915· OSTI ID:22489276

Shi, Yu; Fan, Shanhui ^[1]

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1. Ginzton Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States)

We introduce a distinct class of dynamic non-reciprocal meta-surfaces with arbitrary phase-reconfigurability. This meta-surface consists of an array of meta-atoms, each of which is subject to temporal refractive index modulation, which induces photonic transitions between the states of the meta-atom. We show that arbitrary phase profile for the outgoing wave can be achieved by controlling the phase of the modulation at each meta-atom. Moreover, such dynamic meta-surfaces exhibit non-reciprocal response without the need for magneto-optical effects. The use of photonic transition significantly enhances the tunability and the possible functionalities of meta-surfaces.

• OSTI ID: 22489276
• Journal Information: Applied Physics Letters, Vol. 108, Issue 2; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
MAGNETO-OPTICAL EFFECTS
MODULATION
REFRACTIVE INDEX
SURFACES