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Versatile Confocal Raman Imaging Microscope Built from Off-the-Shelf Opto-Mechanical Components

Diaz Barrero, Deseada; Zeller, Genrich ORCID iD icon 1; Schlösser, Magnus ORCID iD icon 1; Bornschein, Beate 1; Telle, Helmut H.
1 Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)

Abstract:

Confocal Raman microscopic (CRM) imaging has evolved to become a key tool for spatially resolved, compositional analysis and imaging, down to the μm-scale, and nowadays one may choose between numerous commercial instruments. That notwithstanding, situations may arise which exclude the use of a commercial instrument, e.g., if the analysis involves toxic or radioactive samples/environments; one may not wish to render an expensive instrument unusable for other uses, due to contamination. Therefore, custom-designed CRM instrumentation—being adaptable to hazardous conditions and providing operational flexibility—may be beneficial. Here, we describe a CRM setup, which is constructed nearly in its entirety from off-the-shelf optomechanical and optical components. The original aim was to develop a CRM suitable for the investigation of samples exposed to tritium. For increased flexibility, the CRM system incorporates optical fiber coupling to both the Raman excitation laser and the spectrometer. Lateral raster scans and axial profiling of samples are facilitated by the use of a motorized xyz-translation assembly. Besides the description of the construction and alignment of the CRM system, we also provide (i) the experimental evaluation of system performance (such as, e.g., spatial resolution) and (ii) examples of Raman raster maps and axial profiles of selected thin-film samples (such as, e.g., graphene sheets).


Verlagsausgabe §
DOI: 10.5445/IR/1000154341
Veröffentlicht am 10.01.2023
Originalveröffentlichung
DOI: 10.3390/s222410013
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 19.12.2022
Sprache Englisch
Identifikator ISSN: 1424-8220
KITopen-ID: 1000154341
HGF-Programm 51.13.02 (POF IV, LK 01) KATRIN
Erschienen in Sensors
Verlag MDPI
Band 22
Heft 24
Seiten 10013
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter confocal Raman microscopy; hyper-spectral imaging; graphene reference samples
Nachgewiesen in Dimensions
Scopus
Web of Science
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