Mid-infrared laser spectroscopy using a tunable gain-switched Cr2+: ZnSe laser

Michael Evers, David Welford, Dieter Mansteine, Reginald Birngruber

Abstract

Absorption spectroscopy in the mid-infrared (mid-IR) is mostly done by Fourier transform infrared (FT-IR) spectroscopy using wide bandwidth light sources [1]. To reduce artifacts and to have the advantage of spatial resolution we built a narrow bandwidth high resolution mid-infrared laser spectroscope using a tunable laser. The broad gain band of the chromium-doped zinc selenide/sulfide laser allows a spectral coverage from 2200nm to 2850nm, wide enough to see typical vibration bands of biological macro-molecules. This provides a unique opportunity to investigate wavelength dependent absorptions of numerous chemical and biological materials.
Since the laser should be used for spectroscopic applications, an accurate wavelength calibration was performed. It was also ensured that the optical elements meet the requirements for the use in the mid-IR spectrum and that the results are not distorted by absorption of other substances or by interference.
OriginalspracheEnglisch
TitelStudent Conference Medical Engineering Science 2013
Redakteure/-innenT. M. Buzug
Seitenumfang4
ErscheinungsortLübeck
Herausgeber (Verlag)GRIN Publishing
Erscheinungsdatum2013
ISBN (Print)978-3-656-38193-8
ISBN (elektronisch)978-3-656-38192-1
PublikationsstatusVeröffentlicht - 2013
Extern publiziertJa
VeranstaltungStudent Conference 2013 - Lübeck, Deutschland
Dauer: 13.03.201314.03.2013
http://www.bio-med-tec.de/studierendentagung/previous-conferences/studierendentagung-2013.html

Strategische Forschungsbereiche und Zentren

  • Forschungsschwerpunkt: Biomedizintechnik

Fingerprint

Untersuchen Sie die Forschungsthemen von „Mid-infrared laser spectroscopy using a tunable gain-switched Cr2+: ZnSe laser“. Zusammen bilden sie einen einzigartigen Fingerprint.

Zitieren