title: Simultaneous measurement of multiple target displacements by self-mixing interferometry in a single laser diode.
abstract: We demonstrate that a single all-optical sensor based on laser diode self-mixing interferometry can monitor the independent displacement of individual portions of a surface. The experimental evidence was achieved using a metallic sample in a translatory motion while partly ablated by a ps-pulsed fiber laser. A model based on the Lang-Kobayashi approach gives an excellent explanation of the experimental results.
authors.affiliation: Dipartimento Interateneo di Fisica, Università degli Studi e Politecnico di Bari, via Amendola 173, I-70126 Bari, Italy. francesco.mezzapesa@uniba.it
authors.forename: Francesco P
authors.initials: FP
authors.lastname: Mezzapesa
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Columbo
authors.forename: Massimo
authors.initials: M
authors.lastname: Brambilla
authors.forename: Maurizio
authors.initials: M
authors.lastname: Dabbicco
authors.forename: Antonio
authors.initials: A
authors.lastname: Ancona
authors.forename: Teresa
authors.initials: T
authors.lastname: Sibillano
authors.forename: Francesco
authors.initials: F
authors.lastname: De Lucia
authors.forename: Pietro M
authors.initials: PM
authors.lastname: Lugarà
authors.forename: Gaetano
authors.initials: G
authors.lastname: Scamarcio