Axial excitation of tightly interlaced chiral sculptured thin films: “averaged” circular Bragg phenomenon

Lakhtakia, Akhlesh

doi:10.1078/0030-4026-00023

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…This statement is supported by observations on both chiral liquid crystals [21] and chiral STFs [22]. Due to this ability to discriminate between left and right circularly polarized light, any helical film can be used for circular polarization elements including sources, reflectors, filters, and detectors [23][24][25][26].…”

Section: Introductionmentioning

confidence: 53%

Optical and Structural Properties of Bilayer Circular Filter Prepared by Glancing Angle Deposition

Park

Sobahan

Kim

et al. 2009

Journal of the Optical Society of Korea

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In this paper, we report the optical and structural properties of a bilayer circular filter fabricated by a glancing angle deposition technique. The bilayer circular filter is realized by a two-layer TiO2 helical film with layers of opposite structural handedness. It is found that the bilayer circular filter reflects both right and left circularly polarized light with wavelength lying in the Bragg regime. The microstructure of the bilayer circular filter is also investigated using a scanning electron microscope.

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Section: Introductionmentioning

confidence: 53%

Optical and Structural Properties of Bilayer Circular Filter Prepared by Glancing Angle Deposition

Park

Sobahan

Kim

et al. 2009

Journal of the Optical Society of Korea

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“…Polarization insensitivity can be realized using a bilayer version, as a cascade of two otherwise identical chiral STFs but of opposite structural handedness [26]. Chirping can be used to widen the bandwidth [27], and tightly interlaced chiral STFs may also hold technological attraction [28].…”

Section: Circular Polarization Filtersmentioning

confidence: 99%

Sculptured thin films: accomplishments and emerging uses

Lakhtakia

2002

Materials Science and Engineering: C

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Sculptured thin films (STFs) are nano-engineered materials whose columnar morphology is tailored to elicit desired optical responses upon excitation. Two canonical forms of STFs have been identified. Linear constitutive relations for general STFs as unidirectionally nonhomogeneous (continuously or piecewise uniformly) and locally bianisotropic continuums are presented, along with a 4×4 matrix ordinary differential equation for wave propagation therein. A nominal model for the macroscopic properties of linear STFs is devised from nanoscopic considerations. The accomplished implementation of STFs as circular polarization filters and spectral hole filters is discussed, as also are emerging applications such as bioluminescence sensors and optical interconnects.

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Axially excited, tightly interlaced, chiral sculptured thin films for polarization-universal bandgaps

Lakhtakia

2008

Optik

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Axial excitation of tightly interlaced chiral sculptured thin films: “averaged” circular Bragg phenomenon

Cited by 5 publications

References 9 publications

Optical and Structural Properties of Bilayer Circular Filter Prepared by Glancing Angle Deposition

Optical and Structural Properties of Bilayer Circular Filter Prepared by Glancing Angle Deposition

Sculptured thin films: accomplishments and emerging uses

Axially excited, tightly interlaced, chiral sculptured thin films for polarization-universal bandgaps

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