Journal
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
Volume 19, Issue 1, Pages 75-99Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218863510005042
Keywords
Chalcogenide glass; thin film; waveguide; sensor; resonator; photonic integration; refractometry; absorption spectroscopy; micro-fluidics; lab-on-a-chip; femtosecond laser irradiation
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Funding
- Department of Energy [DE-SC52-06NA27341]
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In this paper, we review ongoing progress in the development of novel on-chip, low loss planar molecular sensors that address the emerging need in the field of biochemical sensing. Chalcogenide glasses were identified as the material of choice for sensing due to their wide infrared transparency window. We report the details of manufacturing processes used to realize novel high-index-contrast, compact micro-disk resonators. Our findings demonstrate that our device can operate in dual modalities, for detection of the infrared optical absorption of a binding event using cavity enhanced spectroscopy, or sensing refractive index change due to surface molecular binding and extracting microstructural evolution information via cavity enhanced refractometry.
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