Functionalizing a Tapered Microcavity as a Gas Cell for On-Chip Mid-Infrared Absorption Spectroscopy

Functionalizing a Tapered Microcavity as a Gas Cell for On-Chip Mid-Infrared Absorption Spectroscopy

Increasing demand for field instruments designed to measure gas composition has strongly promoted the development of robust, miniaturized and low-cost handheld absorption spectrometers in the mid-infrared. Efforts thus far have focused on miniaturizing individual components. However, the optical absorption path that the light beam travels through the sample defines the length of the gas cell an...

On-chip mid-infrared gas detection using chalcogenide glass waveguide

Silicon-chip-based mid-infrared dual-comb spectroscopy

Mengjie Yu, 2 Yoshitomo Okawachi, Austin G. Griffith, Nathalie Picqué, 5, 6 Michal Lipson, and Alexander L. Gaeta ∗ Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027 School of Electrical and Computer Engineering, Cornell University, Ithaca, NY 14853 School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853 Max-Planck-Institut fü...

Plasmonic waveguide based mid - infrared lab - on - a - chip

Dielectric-loaded plasmonic waveguides are perfectly suitable for on-chip sensing of fluids. They allow long propagation length and large mode overlaps above 96% with a the analyte. Dielectric-loading is a alternative approach to increase the confinement of mid-infrared surface plasmons without the need for sub-wavelength patterning. Direct excitation and detection is realized using chip integr...

Mid-infrared upconversion spectroscopy