Evanescent wave optical micro-sensor based on chalcogenide glass

Charrier, Joël; Brandily, Marie-Laure; Lhermite, Hervé; Michel, Karine; Bureau, Bruno; Verger, Frédéric; Nazabal, Virginie

doi:10.1016/j.snb.2012.07.056

Cited by 82 publications

(39 citation statements)

References 24 publications

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“…Secondly, by introducing selenium instead of sulfur, the optical transparency of chalcogenide materials is extended further in the IR spectral range. We have also designed, developed and demonstrated evanescent field waveguides based on selenide films with microfluidic channels with optical losses of 0.4 dB/cm (at 1.55 µm) suitable for near-IR and mid-IR spectral range [13]. Moreover, hybrid nanoparticle-microcavity-based plasmonic nanosensors with improved detection resolution and extended remote-sensing ability were also developed using RF sputtered selenide films [9].…”

Section: Thin Films Of As 2 Smentioning

confidence: 99%

“…The main constituents of these vitreous materials are chalcogens elements (sulfur, selenium and tellurium); they are associated with other elements such as arsenic, germanium, gallium, or antimony for example. They can be drawn into optical fibers [11,12] or fabricated as thin films (waveguides) [13,14]. Other properties, specifically their extended optical transmission window from the visible to the far infrared (up to 20 µm), their high refractive index (usually between 2 and 3) or their nonlinear optical properties make them a class of optical materials with growing interest [15,16].…”

Section: Introductionmentioning

confidence: 99%

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RF sputtered amorphous chalcogenide thin films for surface enhanced infrared absorption spectroscopy

Verger¹,

Nazabal²,

Colas³

et al. 2013

Opt. Mater. Express

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Abstract:The primary objective of this study is the development of transparent thin film materials in the IR enabling strong infrared absorption of organic compounds in the vicinity of metal nanoparticles by the surface plasmon effect. For developing these optical micro-sensors, heterostructures combining gold nanoparticles and chalcogenide planar waveguides are fabricated and adequately characterized. Single As 2 S 3 and Ge 25 Sb 10 Se 65 amorphous chalcogenide thin films are prepared by radiofrequency magnetron sputtering. For the fabrication of gold nanoparticles on a chalcogenide planar waveguide, direct current sputtering is employed. Fabricated single layers or hetero-structures are characterized using various techniques to investigate the influence of deposition parameters. The nanoparticles of gold are functionalized by a self-assembled monolayer of 4-nitrothiophenol. Finally, the surface enhanced infrared absorption spectra of 4-nitrothiophenol self-assembled on fabricated Au/Ge-Sb-Se thin films hetero-structures are measured and analyzed. This optical component presents a ~24 enhancement factor for the detection of NO 2 symmetric stretching vibration band of 4-nitrothiophenol at 1336 cm −1 . 232-239 (1999). 19. L. Tichý, H. Ticha, P. Nagels, R. Callaerts, R. Mertens, and M. Vlcek, "Optical properties of amorphous As-Se and Ge-As-Se thin films," Mater. Lett. 39(2), 122-128 (1999). 20. J. Charrier, M. L. Anne, H. Lhermite, V. Nazabal, J. P. Guin, F. Charpentier, T. Jouan, F. Henrio, D. Bosc, and J. L. Adam, "Sulphide GaxGe25-xSb10S65(x=0,5) sputtered films: Fabrication and optical characterizations of planar and rib optical waveguides," J. Appl.

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Section: Thin Films Of As 2 Smentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

RF sputtered amorphous chalcogenide thin films for surface enhanced infrared absorption spectroscopy

Verger¹,

Nazabal²,

Colas³

et al. 2013

Opt. Mater. Express

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“…We use the evanescent field of the transverse-electric (TE) optical waveguide mode to detect the attenuation due to glucose. Evanescent absorption spectroscopy of biomolecules has been demonstrated previously using integrated waveguides [7,8], especially on the low-loss chalcogenide platform [9][10][11], and optical cavities [12,13]. However, typically the mid-infrared wavelengths are probed for which power-efficient integrated sources are lacking.…”

Section: Introductionmentioning

confidence: 99%

Glucose sensing by waveguide-based absorption spectroscopy on a silicon chip

Ryckeboer

Bockstaele

Vanslembrouck

et al. 2014

Biomed. Opt. Express

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Abstract:In this work, we demonstrate in vitro detection of glucose by means of a lab-on-chip absorption spectroscopy approach. This optical method allows label-free and specific detection of glucose. We show glucose detection in aqueous glucose solutions in the clinically relevant concentration range with a silicon-based optofluidic chip. The sample interface is a spiral-shaped rib waveguide integrated on a silicon-on-insulator (SOI) photonic chip. This SOI chip is combined with micro-fluidics in poly(dimethylsiloxane) (PDMS). We apply aqueous glucose solutions with different concentrations and monitor continuously how the transmission spectrum changes due to glucose. Based on these measurements, we derived a linear regression model, to relate the measured glucose spectra with concentration with an error-of-fitting of only 1.14 mM. This paper explains the challenges involved and discusses the optimal configuration for on-chip evanescent absorption spectroscopy. In addition, the prospects for using this sensor for glucose detection in complex physiological media (e.g. serum) is briefly discussed.

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“…Chalcogenide waveguides are being developed as optical sensors in the infrared, and their capabilities have been demonstrated in the near infrared (NIR) [3][4][5][6]. So far, however, few ChG waveguide sensors have made use of either the MIR transparency of the chalcogenides or the very strong fundamental molecular vibrational absorption bands that exist in the MIR [7].…”

Section: Introductionmentioning

confidence: 99%