Vorträge und Posterpräsentationen (ohne Tagungsband-Eintrag):
A. Dabrowska, A. Schwaighofer, S. Lindner, B. Lendl:
"Laser Based Mid-IR Dispersion Spectroscopy of Liquid Samples";
Hauptvortrag: LC Talks - Infrared Sessions 1,
On-line (eingeladen);
01.12.2020.
Kurzfassung englisch:
Novel laser light sources in the mid-infrared region enable new spectroscopy schemes beyond classical absorption spectroscopy due to the coherent nature of the emitted radiation. We report on a refractive index sensing scheme based on a Mach-Zehnder interferometer and an external-cavity quantum cascade laser that allows rapid acquisition of high-resolution spectra of liquid-phase samples, sensitive to relative refractive index changes down to 10−7. Dispersion spectra of three model proteins in deuterated solution were recorded at concentrations as low as 0.25 mg mL−1. Comparison with Kramers-Kronig-transformed Fourier transform infrared absorbance spectra revealed high conformance, and obtained figures of merit compare well with conventional high-end FTIR spectroscopy [1].
REFERENCES
[1] Alicja Dabrowska, Andreas Schwaighofer, Stefan Lindner, and Bernhard Lendl, Mid-IR refractive index sensor for detecting proteins employing an external cavity quantum cascade laser-based Mach-Zehnder interferometer, Opt. Exp. 28(24), 36632-36642 (2020).
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.