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Ultrahigh-speed multiplex coherent anti-Stokes Raman scattering microspectroscopy using scanning elliptical focal spot

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/82935

Title: Ultrahigh-speed multiplex coherent anti-Stokes Raman scattering microspectroscopy using scanning elliptical focal spot
Authors: Kizawa, Shun Browse this author
Hashimoto, Mamoru Browse this author →KAKEN DB
Issue Date: 11-Oct-2021
Publisher: American Institute of Physics (AIP)
Journal Title: The Journal of Chemical Physics
Volume: 155
Issue: 14
Start Page: 144201
Publisher DOI: 10.1063/5.0063987
Abstract: We present a beam-scanning multiplex coherent anti-Stokes Raman scattering (CARS) microspectroscopy system using parallel excitation and parallel detection schemes based on an elliptical focal spot, which enables highly efficient signal acquisition even for short exposures. The elliptical focal spot was used to simultaneously observe the CARS signals of an enlarged region and reduce the peak irradiance. The developed system realized an acquisition rate of 34 139 spectra/s and enabled ultrahigh-speed acquisition of a vibrational spectroscopic image, covering the fingerprint region of 930–1830 cm-¹ with 256(x) × 256(y) × 512(spectrum) pixels in 1.92 s or with 128(x) × 128(y) × 256(spectrum) pixels in 0.54 s. We demonstrated ultrahigh-speed hyperspectral imaging of a mixture of polymer beads in liquid linoleic acid and living adipocytes using the developed system. All of the present demonstrations were performed with a low-peak irradiance excitation of ∼19 GW/cm², which has been reported in previous studies to cause less photodamage to living cells. The label-free and ultrahigh-speed identification and visualization of various molecules made possible by the present system will accelerate the development of practical live-cell investigation.
Rights: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Chem. Phys. 155, 144201 (2021) and may be found at https://doi.org/10.1063/5.0063987
Type: article (author version)
URI: http://hdl.handle.net/2115/82935
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 橋本 守

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