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Updated: May 22, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Broadband near-field mid-infrared spectroscopy and application to phonon resonances in quartz
Michio Ishikawa1, Makoto Katsura, Satoru Nakashima
1Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, Japan. mishikawa@ess.sci.osaka-u.ac.jp
Abstract:
Infrared (IR) spectroscopy is a versatile analytical method and nano-scale spatial resolution could be achieved by scattering type near-field optical microscopy (s-SNOM). The spectral bandwidth was, however, limited to approximately 300 cm(-1) with a laser light source. In the present study, the development of a broadband mid-IR near-field spectroscopy with a ceramic light source is demonstrated. A much wider bandwidth (at least 3000 to 1000 cm(-1)) is achieved with a ceramic light source. The experimental data on quartz Si-O phonon resonance bands are well reproduced by theoretical simulations indicating the validity of the present broadband near-field IR spectroscopy.
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