Optical Feedback on Erbium Doped Fibre Laser for Efficient Heterodyne SNOM Imaging Near 1.5μm

Pierre Bahin (1) , Hervé Gilles (2) , Sylvain Girard (2) , Fabrice Gourbilleau (2, 3) , Mathieu Laroche (2) , Richard Rizk (2, 3)

1 LIOA - Lasers, Instrumentation Optique et Applications
2 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique
3 NIMPH - Nanomatériaux, Ions et Métamatériaux pour la Photonique

Abstract Heterodyne optical feedback on a class B laser is investigated for Scanning Near field Optical Microscopy (SNOM). All-fiberized set-up combining an Er-doped Distributed Feedback (DFB) fiber laser, a pair of pigtailed acousto-optics modulators (AOM) and a shear-force based scanning probe technique has been developed for the simultaneous observation of topography and evanescent light field on integrated optical devices. First demonstration of imaging using this technique is illustrated by characterizing the propagating modes into a rib waveguide at 1.54μm. Comparison between a theoretical model based on beam propagation mode (BPM) simulations and experimental measurements validates the results.

Domaines: Physique [physics]

Pierre Bahin, Hervé Gilles, Sylvain Girard, Fabrice Gourbilleau, Mathieu Laroche, et al.. Optical Feedback on Erbium Doped Fibre Laser for Efficient Heterodyne SNOM Imaging Near 1.5μm. MRS, MRS Proceedings, 1182, pp.1182-EE13-14, 2011, ⟨10.1557/PROC-1182-EE13-14⟩. ⟨hal-04435376⟩