Fabrication and characterization of high-contrast mid-infrared GeTe4 channel waveguides

Vinita Mittal; Armen Aghajani; Lewis G. Carpenter; James C. Gates; Jonathan Butement; Peter G.R. Smith; James S. Wilkinson; Ganapathy Senthil Murugan

doi:10.1364/OL.40.002016

Fabrication and characterization of high-contrast mid-infrared GeTe₄ channel waveguides

Vinita Mittal
, Armen Aghajani
, Lewis G. Carpenter
, James C. Gates
, Jonathan Butement
, Peter G.R. Smith
, James S. Wilkinson
, Ganapathy Senthil Murugan

NY Creates Research Foundation

NY Creates

University of Southampton

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

25 Scopus citations

Abstract

We report the fabrication and characterization of high index contrast (Δn ≈ 0.9) GeTe₄ channel waveguides on ZnSe substrate for evanescent-field-based biosensing applications in the mid-IR spectral region. GeTe₄ films were deposited by RF sputtering and characterized for their structure, composition, transparency, and dispersion. The lift-off technique was used to pattern the waveguide channels. Waveguiding from 2.5-3.7 and 6.4-7.5 μm was demonstrated, and mode intensity profile and estimated propagation losses are given for the 3.5 μm wavelength.

Original language	English
Pages (from-to)	2016-2019
Number of pages	4
Journal	Optics Letters
Volume	40
Issue number	9
DOIs	https://doi.org/10.1364/OL.40.002016
State	Published - 2015

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title = "Fabrication and characterization of high-contrast mid-infrared GeTe4 channel waveguides",

abstract = "We report the fabrication and characterization of high index contrast (Δn ≈ 0.9) GeTe4 channel waveguides on ZnSe substrate for evanescent-field-based biosensing applications in the mid-IR spectral region. GeTe4 films were deposited by RF sputtering and characterized for their structure, composition, transparency, and dispersion. The lift-off technique was used to pattern the waveguide channels. Waveguiding from 2.5-3.7 and 6.4-7.5 μm was demonstrated, and mode intensity profile and estimated propagation losses are given for the 3.5 μm wavelength.",

author = "Vinita Mittal and Armen Aghajani and Carpenter, \{Lewis G.\} and Gates, \{James C.\} and Jonathan Butement and Smith, \{Peter G.R.\} and Wilkinson, \{James S.\} and Murugan, \{Ganapathy Senthil\}",

note = "Publisher Copyright: {\textcopyright} 2015 Optical Society of America.",

year = "2015",

doi = "10.1364/OL.40.002016",

language = "English",

volume = "40",

pages = "2016--2019",

journal = "Optics Letters",

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T1 - Fabrication and characterization of high-contrast mid-infrared GeTe4 channel waveguides

AU - Mittal, Vinita

AU - Aghajani, Armen

AU - Carpenter, Lewis G.

AU - Gates, James C.

AU - Butement, Jonathan

AU - Smith, Peter G.R.

AU - Wilkinson, James S.

AU - Murugan, Ganapathy Senthil

PY - 2015

Y1 - 2015

N2 - We report the fabrication and characterization of high index contrast (Δn ≈ 0.9) GeTe4 channel waveguides on ZnSe substrate for evanescent-field-based biosensing applications in the mid-IR spectral region. GeTe4 films were deposited by RF sputtering and characterized for their structure, composition, transparency, and dispersion. The lift-off technique was used to pattern the waveguide channels. Waveguiding from 2.5-3.7 and 6.4-7.5 μm was demonstrated, and mode intensity profile and estimated propagation losses are given for the 3.5 μm wavelength.

AB - We report the fabrication and characterization of high index contrast (Δn ≈ 0.9) GeTe4 channel waveguides on ZnSe substrate for evanescent-field-based biosensing applications in the mid-IR spectral region. GeTe4 films were deposited by RF sputtering and characterized for their structure, composition, transparency, and dispersion. The lift-off technique was used to pattern the waveguide channels. Waveguiding from 2.5-3.7 and 6.4-7.5 μm was demonstrated, and mode intensity profile and estimated propagation losses are given for the 3.5 μm wavelength.

UR - https://www.scopus.com/pages/publications/84956580860

U2 - 10.1364/OL.40.002016

DO - 10.1364/OL.40.002016

M3 - Article

C2 - 25927772

SN - 0146-9592

VL - 40

SP - 2016

EP - 2019

JO - Optics Letters

JF - Optics Letters

IS - 9

ER -

Fabrication and characterization of high-contrast mid-infrared GeTe₄ channel waveguides

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