Interferometric background reduction for femtosecond stimulated Raman scattering loss spectroscopy
Dobner S, Cleff C, Fallnich C, Groß P
Research article (journal) | Peer reviewedAbstract
We present a purely optical method for background suppression in nonlinear spectroscopy based on linear interferometry. Employing an unbalanced Sagnac interferometer, an unprecedented background reduction of 17 dB over a broad bandwidth of 60 THz (2000 cm(-1)) is achieved and its application to femtosecond stimulated Raman scattering loss spectroscopy is demonstrated. Apart from raising the signal-to-background ratio in the measurement of the Raman intensity spectrum, this interferometric method grants access to the spectral phase of the resonant χ(3) contribution. The spectral phase becomes apparent as a dispersive lineshape and is reproduced numerically with a simple oscillator model.
Details about the publication
Journal: Journal of Chemical Physics
Volume: 137
Issue: 17
Status: Published
Release year: 2012 (07/11/2012)
Language in which the publication is written: English
DOI: 10.1063/1.4764865
Authors from the University of Münster
| Dobner, Sven | Professur für Angewandte Physik (Prof. Fallnich) |
| Fallnich, Carsten | Professur für Angewandte Physik (Prof. Fallnich) |
Promotionen, aus denen die Publikation resultiert
| Tailoring Light for Raman Microspectroscopy Candidate: Dobner, Sven | Supervisors: Fallnich, Carsten; Boller, Klaus Period of time: until 11/04/2014 Doctoral examination procedure finished at: Doctoral examination procedure at University of Münster |