A remark on helical waveguides
arXiv:0704.2770 · doi:10.1016/j.physleta.2007.05.013
Abstract
Motivated by a proposal to create an optical helix-shaped waveguides for cold atoms and molecules, we discuss local perturbations which can create bound states in such a setting. This is known about a local slowdown of the twist; we show that a similar effect can result from a local tube protrusion or a change of the helix radius in correlation with its pitch angle.
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Cited by in corpus (6)
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- Nanohelices as superlattices: Bloch oscillations and electric dipole transitions
- Bright and Dark Helices of Light