Materials, Photonic Devices, and Sensors

Suppression of circular Bragg phenomenon in tilt-modulated chiral-sculptured thin films at oblique incidence

[+] Author Affiliations
Zahir Muhammad

Quaid-i-Azam University, Department of Electronics, Islamabad 45320, Pakistan

Qaisar A. Naqvi

Quaid-i-Azam University, Department of Electronics, Islamabad 45320, Pakistan

Muhammad Faryad

Lahore University of Management Sciences, Department of Physics, Lahore 54792, Pakistan

Opt. Eng. 53(11), 117110 (Nov 25, 2014). doi:10.1117/1.OE.53.11.117110
History: Received August 8, 2014; Accepted October 30, 2014
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Abstract.  By using a piecewise uniform approximation method, the reflectance and transmittance of light for an obliquely incident circularly polarized plane wave on a tilt-modulated chiral sculptured thin film (STF) were computed. The circular Bragg phenomenon was found to vanish when the amplitude of the modulation was high enough for oblique incidence. The tilt-modulated chiral STF then acts like a conventional mirror in the Bragg regime.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Zahir Muhammad ; Qaisar A. Naqvi and Muhammad Faryad
"Suppression of circular Bragg phenomenon in tilt-modulated chiral-sculptured thin films at oblique incidence", Opt. Eng. 53(11), 117110 (Nov 25, 2014). ; http://dx.doi.org/10.1117/1.OE.53.11.117110


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