Volume 121, Number 2, January 2018
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||19 March 2018|
The optical Möbius strip cavity: Tailoring geometric phases and far fields
Institute for Physics, Theoretical Physics II/Computational Physics Group, Technische Universität Ilmenau Weimarer Straße 25, 98693 Ilmenau, Germany
Received: 17 October 2017
Accepted: 26 February 2018
The Möbius strip, a long sheet of paper whose ends are glued together after a 180° twist, has remarkable geometric and topological properties. Here, we consider dielectric Möbius strips of finite width and investigate the interplay between geometric properties and resonant light propagation. We show how the polarization dynamics of the electromagnetic wave depends on the topological properties, and demonstrate how the geometric phase can be manipulated between 0 and π through the system geometry. The loss of the Möbius character in thick cavities and for small twist segment lengths allows one to manipulate the polarization dynamics and the far-field emission, and opens the venue for applications.
PACS: 42.55.Sa – Microcavity and microdisk lasers / 42.60.Da – Resonators, cavities, amplifiers, arrays, and rings / 42.25.Ja – Polarization
© EPLA, 2018
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