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| Baudet, Emeline; Gutierrez-arroyo, A.; Baillieul, Marion; Charrier, J.; Němec, P.; Bodiou, L.; Lemaitre, J.; Rinnert, Emmanuel; Michel, K.; Bureau, B.; Adam, J. L.; Nazabal, V.. |
| The detection of molecules dissolved in liquid medium can be envisaged by means of an optical integrated sensor operating in middle infrared range. The intended sensor is composed of a cladding and a guiding selenide sputtered layers transparent in middle infrared. Hence, Ge-Sb-Se thin films were selected in view of tailored refractive index contrast, successfully deposited by radio frequency magnetron sputtering and characterized. To maximize the evanescent field at a wavelength of 7.7 µm, a suitable selenide waveguide allowing measuring the optical transmitted power was designed by performing computer simulations based on the effective index method enabling single-mode propagation for a waveguide width between 8 and 12 µm. Selenide sputtered films were... |
| Tipo: Text |
Palavras-chave: Optical sensing and sensors; Mid-infrared; Integrated optics devices; Chalcogenide glasses; Thin films. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00389/50014/50603.pdf |
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| Baudet, Emeline; Gutierrez-arroyo, A.; Nemec, P.; Bodiou, L.; Lemaitre, J.; De Sagazan, O.; Lhermitte, H.; Rinnert, Emmanuel; Michel, K.; Bureau, B.; Charrier, J.; Nazabal, V.. |
| A micro-sensor based on selenide glasses for evanescent wave detection in mid-infrared spectral range was designed and fabricated. Ge-Sb-Se thin films were successfully deposited by radio-frequency magnetron sputtering. In order to characterize them spectroscopic ellipsometry, atomic force microscopy and contact angle measurements were employed to study near and middle infrared refractive index, surface roughness and the wettability, respectively. Selenide sputtered films were micro-patterned by means of reactive ion etching with inductively coupled plasma process enabling single-mode propagation at a wavelength of 7.7 µm for a waveguide width between 8 and 12 µm. Finally, optical waveguide surface was functionalized by deposition of a hydrophobic polymer,... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00346/45709/45337.pdf |
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| Baudet, Emeline; Sergent, M.; Nemec, P.; Cardinaud, C.; Rinnert, Emmanuel; Michel, K.; Jouany, L.; Bureau, B.; Nazabal, V.. |
| The development of the optical bio-chemical sensing technology is an extremely important scientific and technological issue for diagnosis and monitoring of diseases, control of industrial processes, environmental detection of air and water pollutants. Owing to their distinctive features, chalcogenide amorphous thin films represent a keystone in the manufacture of middle infrared integrated optical devices for a sensitive detection of biological or environmental variations. Since the chalcogenide thin films characteristics, i. e. stoichiometric conformity, structure, roughness or optical properties can be affected by the growth process, the choice and control of the deposition method is crucial. An approach based on the experimental design is undoubtedly a... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00390/50119/50725.pdf |
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| Baillieul, Marion; Baudet, Emeline; Michel, Karine; Moreau, Jonathan; Němec, Petr; Boukerma, Kada; Colas, Florent; Charrier, Joël; Bureau, Bruno; Rinnert, Emmanuel; Nazabal, Virginie. |
| he objective of this study is to demonstrate the successful functionalization of the surface of a chalcogenide infrared waveguide with the ultimate goal of developing an infrared micro-sensor device. First, a polyisobutylene coating was selected by testing its physico-chemical compatibility with a Ge-Sb-Se selenide surface. To simulate the chalcogenide platform infrared sensor, the detection of benzene, toluene, and ortho-, meta- and para-xylenes was efficaciously performed using a polyisobutylene layer spin-coated on 1 and 2.5 µm co-sputtered selenide films of Ge28Sb12Se60 composition deposited on a zinc selenide prism used for attenuated total reflection spectroscopy. The thickness of the polymer coating was optimized by attenuated total reflection... |
| Tipo: Text |
Palavras-chave: Optical infrared sensor; Chalcogenide glasses; Mid-infrared; Mono-aromatic hydrocarbons; Natural waters; BTEXs; PAHs. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00687/79947/82867.pdf |
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