Journal Article

PUBDB-2024-06289

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spectral fingerprinting of aqueous glucose with ultra-broadband vibrational sum-frequency generation spectroscopy at bio-relevant low concentration

Luo, C.Extern* ; Vasudevan Namboodiri, M.DESY* ; Schulz, M. ; Riedel, R. ; Prandolini, M.Extern* ; Laarmann, T. (Corresponding author)XFEL.EU*DESY*

2025
Optica Washington, DC

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Please use a persistent id in citations: doi:10.1364/OE.544862  doi:10.3204/PUBDB-2024-06289

Abstract: Vibrational modes of glucose spanning from 900 to 1400 cm$^{−1}$ in the molecular fingerprint region have been traced by means of vibrational sum-frequency generation spectroscopy in aqueous solution as a function of glucose concentration. The high sensitivity is enabled by a 200 kHz few-cycle mid-infrared optical parametric chirped-pulse amplifier (OPCPA). The OPCPA generates broadband pulses (from 7 to 11 µm) centered at 9 µm with 114 fs pulse duration, at a high average power of 245 mW and high pulse energy of 1.2 µJ. The achieved performance of the spectrometer is benchmarked by probing the carbon-oxygen bond stretching mode at 1035 cm using a biologically relevant low sample concentration of 10 mM.

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Contributing Institute(s):

1. FS-Photon Science (FS-PS)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. AIM, DFG project G:(GEPRIS)390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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