%0 Journal Article
%A Luo, Cheng
%A Vasudevan Namboodiri, Mahesh
%A Schulz, Michael
%A Riedel, Robert
%A Prandolini, Mark
%A Laarmann, Tim
%T Spectral fingerprinting of aqueous glucose with ultra-broadband vibrational sum-frequency generation spectroscopy at bio-relevant low concentration
%J Optics express
%V 33
%N 3
%@ 1094-4087
%C Washington, DC
%I Optica
%M PUBDB-2024-06289
%P 6080 - 6091
%D 2025
%X Vibrational modes of glucose spanning from 900 to 1400 cm<sup>−1</sup> 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001444162000001
%R 10.1364/OE.544862
%U https://bib-pubdb1.desy.de/record/615828