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Article Dans Une Revue Optics and Lasers in Engineering Année : 2023

Simultaneous local spectral, colorimetric, and topographic characterization of laser-induced colored stainless steel with low coherence interference microscopy

Résumé

Laser marking is a well-established advanced technology for changing the color properties of an object. The spectral response or color information induced by the laser is generally measured with a spectrometer or an ellipsometer. These instruments only provide an average response over an area of a few thousand μm 2 at best. However, color laser marking is a local process that modifies the structure of the metal at a micrometer scale. In this work, we propose a technique for extracting simultaneously the 3D topography and the 2D spectral re- sponse from 460 nm to 900 nm, providing color information over this spectral range, in a single measurement. The proposed technique uses a low-coherence interference microscope to provide a laterally diffraction-limited measurement ( ∼1 μm) over a large field of view (up to 200 ×200 μm²) with the advantages of being rapid ( < 3 min) and contactless. Through the Fourier Transform analysis of the measured interferogram, a multimodal characterization (quantitative spectra, color (xy) and topography) of reflective samples can be achieved. Results obtained on laser-induced colored stainless steel are reported.

Dates et versions

hal-03926431 , version 1 (06-01-2023)

Identifiants

Citer

Sébastien Marbach, Rémy Claveau, Florie Ogor, Christophe Cordier, Jesse Schiffler, et al.. Simultaneous local spectral, colorimetric, and topographic characterization of laser-induced colored stainless steel with low coherence interference microscopy. Optics and Lasers in Engineering, 2023, 162, pp.107402. ⟨10.1016/j.optlaseng.2022.107402⟩. ⟨hal-03926431⟩
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