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- W1989222703 abstract "Fourier transform infrared (FT-IR) imaging spectrometers are almost universally used to record microspectroscopic imaging data in the mid-infrared (mid-IR) spectral region. While the commercial standard, interferometry necessitates collection of large spectral regions, requires a large data handling overhead for microscopic imaging and is slow. Here we demonstrate an approach for mid-IR spectroscopic imaging at selected discrete wavelengths using narrowband resonant filtering of a broadband thermal source, enabled by high-performance guided-mode Fano resonances in one-layer, large-area mid-IR photonic crystals on a glass substrate. The microresonant devices enable discrete frequency IR (DF-IR), in which a limited number of wavelengths that are of interest are recorded using a mechanically robust instrument. This considerably simplifies instrumentation as well as overhead of data acquisition, storage and analysis for large format imaging with array detectors. To demonstrate the approach, we perform DF-IR spectral imaging of a polymer USAF resolution target and human tissue in the C-H stretching region (2600-3300 cm(-1)). DF-IR spectroscopy and imaging can be generalized to other IR spectral regions and can serve as an analytical tool for environmental and biomedical applications." @default.
- W1989222703 created "2016-06-24" @default.
- W1989222703 creator A5004949227 @default.
- W1989222703 creator A5023245938 @default.
- W1989222703 creator A5063335377 @default.
- W1989222703 creator A5075829379 @default.
- W1989222703 date "2014-07-18" @default.
- W1989222703 modified "2023-10-17" @default.
- W1989222703 title "Sculpting narrowband Fano resonances inherent in the large-area mid-infrared photonic crystal microresonators for spectroscopic imaging" @default.
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- W1989222703 doi "https://doi.org/10.1364/oe.22.018142" @default.
- W1989222703 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4162348" @default.
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