Unidirectional Invisibility Induced by PT-Symmetric Periodic Structures

Journal Article · Fri May 27 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.213901· OSTI ID:21538373

Zin, Lin; Ramezani, Hamidreza; Kottos, Tsampikos ^[1]; Eichelkraut, Toni; Christodoulides, Demetrios N ^[2]; Hui, Cao ^[3]

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1. Department of Physics, Wesleyan University, Middletown, Connecticut 06459 (United States)
2. College of Optics and Photonics-CREOL, University of Central Florida, Orlando, Florida 32816 (United States)
3. Department of Applied Physics, Yale University, New Haven, Connecticut 06520 (United States)

Parity-time (PT) symmetric periodic structures, near the spontaneous PT-symmetry breaking point, can act as unidirectional invisible media. In this regime, the reflection from one end is diminished while it is enhanced from the other. Furthermore, the transmission coefficient and phase are indistinguishable from those expected in the absence of a grating. The phenomenon is robust even in the presence of Kerr nonlinearities, and it can also effectively suppress optical bistabilities.

• OSTI ID: 21538373
• Journal Information: Physical Review Letters, Vol. 106, Issue 21; Other Information: DOI: 10.1103/PhysRevLett.106.213901; (c) 2011 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
GRATINGS
NONLINEAR PROBLEMS
PARITY
PERIODICITY
REFLECTION
SYMMETRY
SYMMETRY BREAKING
TRANSMISSION
PARTICLE PROPERTIES
VARIATIONS