Development and evaluation of a hand-held fiber-optic Raman probe with an integrated autofocus unit
Yang W, Knorr F, Popp J, Schie IW (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 28
Pages Range: 30760-30770
Journal Issue: 21
DOI: 10.1364/OE.401207
Abstract
Current implementations of fiber-optic Raman spectroscopy probes are frequently based on non-contact probes with a fixed focus and thus and have to precisely maintain the probe-to-sample distance to ensure a sufficient signal collection. We propose and experimentally demonstrate a novel hand-held fiber-optic Raman probe design, which is based on a liquid lens autofocusing unit, combined with a distance sensor and an in-house developed algorithm to precisely determine the probe-to-sample distance. The reported probe significantly improves the signal stability even for hand-held operation, while reducing distance-dependent artifacts for the acquisition of Raman spectra and can improve the acquisition of Raman spectra in a variety of applications.
Involved external institutions
Germany (DE)How to cite
APA:
Yang, W., Knorr, F., Popp, J., & Schie, I.W. (2020). Development and evaluation of a hand-held fiber-optic Raman probe with an integrated autofocus unit. Optics Express, 28(21), 30760-30770. https://dx.doi.org/10.1364/OE.401207
MLA:
Yang, Wei, et al. "Development and evaluation of a hand-held fiber-optic Raman probe with an integrated autofocus unit." Optics Express 28.21 (2020): 30760-30770.
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