Affiliation:
1. Institut d'optique d'Aquitaine
2. Université de Limoges
3. Polish Academy of Sciences
4. Sapienza University of Rome
5. University of Brescia
6. Kyushu University
Abstract
We demonstrate how spatial beam self-cleaning and supercontinuum generation in graded-index multimode optical fibers can be directly applied in multiplex coherent anti-Stokes Raman Scattering (M-CARS) spectroscopy. Although supercontinuum generation causes pump depletion mainly in the center of the beam, the partial recovery of the pump brightness due to self-cleaning may enable self-referenced M-CARS, with no additional delay lines to synchronize pump and Stokes waves. As a proof-of-principle, we report examples of imaging of single chemical compounds and polystyrene beads. The new scheme paves the way towards simpler M-CARS systems based on multimode fiber sources.
Funder
Arianegroup
Direction Générale de l’Armement
Conseil Régional Aquitaine
Agence Nationale de la Recherche
H2020 FET Open PETACom
European Research Council
Narodowa Agencja Wymiany Akademickiej
Subject
Atomic and Molecular Physics, and Optics
Cited by
9 articles.
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