Title

Co-existence of Extended and Localized States in Thue-Morse Array of Optical Cavities

Presenter Information

Timofey Golubev

Department

Physics

Major

Physics

Research Advisor

Yamilov, Alexey

Advisor's Department

Physics

Funding Source

National Science Foundation (NSF)

Abstract

Thue-Morse sequence is a prime example of deterministic aperiodic systems with singular-continuous structure spectra. We report on a study of optical properties of a two-dimensional Thue-Morse-based array of micro-cavities. Under realistic conditions, tight-binding description is employed to investigate optical spectra of the system and spatial extent of its eigenstates. We observe coexistence of localized and delocalized states in narrow spectral regions and provide an explanation for this phenomenon.

Biography

Timofey is a junior at Missouri S& T and majoring in physics. He has been a member of the METIS research group advised by Dr. Alexey Yamilov since summer of 2012. His role in the research has been concentrated in studying the optical properties of the systems described above using the commercial package COMSOL Multiphysics. After receiving his bachelor's degree, Timofey plans to attend graduate school and pursue a career in research physics. 43

Research Category

Sciences

Presentation Type

Oral Presentation

Document Type

Presentation

Location

Upper Atrium/Hallway

Presentation Date

03 Apr 2013, 9:00 am - 11:45 am

Comments

Joint project with Brock Hinton

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Apr 3rd, 9:00 AM Apr 3rd, 11:45 AM

Co-existence of Extended and Localized States in Thue-Morse Array of Optical Cavities

Upper Atrium/Hallway

Thue-Morse sequence is a prime example of deterministic aperiodic systems with singular-continuous structure spectra. We report on a study of optical properties of a two-dimensional Thue-Morse-based array of micro-cavities. Under realistic conditions, tight-binding description is employed to investigate optical spectra of the system and spatial extent of its eigenstates. We observe coexistence of localized and delocalized states in narrow spectral regions and provide an explanation for this phenomenon.