Spacerless circular-polarization spectral-hole filters using chiral sculptured thin films: Theory and experiment

Ian J. Hodgkinson; Qi Hong Wu; Karen E. Thorn; Akhlesh Lakhtakia; Martin W. McCall

doi:10.1016/S0030-4018(00)00935-4

Spacerless circular-polarization spectral-hole filters using chiral sculptured thin films: Theory and experiment

Ian J. Hodgkinson, Qi Hong Wu, Karen E. Thorn, Akhlesh Lakhtakia, Martin W. McCall

Research output: Contribution to journal › Article › peer-review

139 Scopus citations

Abstract

In the Bragg wavelength regime, a sculptured thin film with chiral micromorphology permits light of a particular circular polarization state to pass virtually unhindered, but light of the other polarization state is reflected almost completely. On cascading two such films, but with one film twisted with respect to the other by an angle of 90 °, a hole appears in the reflection spectrum. This is proved theoretically as well as experimentally in this paper. Also, it is shown that the design wavelength of the filter can be tuned by a modest amount by tilting the filter with respect to the incident beam.

Original language	English (US)
Pages (from-to)	57-66
Number of pages	10
Journal	Optics Communications
Volume	184
Issue number	1
DOIs	https://doi.org/10.1016/S0030-4018(00)00935-4
State	Published - Oct 1 2000

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/S0030-4018(00)00935-4

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AU - Lakhtakia, Akhlesh

AU - McCall, Martin W.

PY - 2000/10/1

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AB - In the Bragg wavelength regime, a sculptured thin film with chiral micromorphology permits light of a particular circular polarization state to pass virtually unhindered, but light of the other polarization state is reflected almost completely. On cascading two such films, but with one film twisted with respect to the other by an angle of 90 °, a hole appears in the reflection spectrum. This is proved theoretically as well as experimentally in this paper. Also, it is shown that the design wavelength of the filter can be tuned by a modest amount by tilting the filter with respect to the incident beam.

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Spacerless circular-polarization spectral-hole filters using chiral sculptured thin films: Theory and experiment

Abstract

All Science Journal Classification (ASJC) codes

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