Ultra-wide range non-contact surface profilometry based on reconfigurable fiber interferometry.
Opt Lett
; 49(13): 3588-3591, 2024 Jul 01.
Article
em En
| MEDLINE
| ID: mdl-38950216
ABSTRACT
Surface characterization is essential for a technical evaluation of device performance and to assess surface dynamics in fabrication units. In this regard, a number of surface profiling techniques have been developed that accurately map sample topography but have significantly limited detection range. Here, we demonstrate a cascaded non-contact fiber interferometer-based approach for real-time high-precision surface profiling with ultrawide detection range (nm to mm). This compact interferometers' system operates by wavelength interrogation that provides a scope to study several types of surfaces and has a tunable cavity configuration for varying the sensitivity and range of the detectable features' size. The proposed system enables nanoscale profiling over 10-1000â
nm with resolution of 10â
nm and microscale mapping over 1-1000â
µm with resolution of 0.2â
µm. The technique is utilized to map the features of nanostructured surfaces and estimate the surface roughness of standardized industrial samples.
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MEDLINE
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article