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Absolute fluorescence and absorption measurements over a dynamic range of 106 with cavity-enhanced laser-induced fluorescence

Sanders, Scott E.; Willis, Oliver R.; Nahler, N. Hendrik; Wrede, Eckart

Absolute fluorescence and absorption measurements over a dynamic range of 106 with cavity-enhanced laser-induced fluorescence Thumbnail


Authors

Scott E. Sanders

Oliver R. Willis

N. Hendrik Nahler



Abstract

We present a novel spectroscopic technique that exhibits high sensitivity and a large dynamic range for the measurement of absolute absorption coefficients. We perform a simultaneous and correlated laser-induced fluorescence and cavity ring-down measurement of the same sample in a single pulsed laser beam. The combined measurement offers a large dynamic range and a lower limit of detection than either technique on its own. The methodology, dubbed cavity-enhanced laser-induced fluorescence, is developed and rigorously tested against the electronic spectroscopy of 1,4-bis(phenylethynyl)benzene in a molecular beam and density measurements in a cell. We outline how the method can be used to determine absolute quantities, such as sample densities, absorption cross sections, and fluorescence quantum yields, particularly in spatially confined samples.

Citation

Sanders, S. E., Willis, O. R., Nahler, N. H., & Wrede, E. (2018). Absolute fluorescence and absorption measurements over a dynamic range of 106 with cavity-enhanced laser-induced fluorescence. The Journal of Chemical Physics, 149(1), Article 014201. https://doi.org/10.1063/1.5031842

Journal Article Type Article
Acceptance Date Jun 6, 2018
Online Publication Date Jul 2, 2018
Publication Date Jul 7, 2018
Deposit Date Jul 6, 2018
Publicly Available Date Jul 2, 2019
Journal Journal of Chemical Physics
Print ISSN 0021-9606
Electronic ISSN 1089-7690
Publisher American Institute of Physics
Peer Reviewed Peer Reviewed
Volume 149
Issue 1
Article Number 014201
DOI https://doi.org/10.1063/1.5031842

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Copyright Statement
© 2018 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Sanders, Scott E., Willis, Oliver R., Nahler, N. Hendrik & Wrede, Eckart (2018). Absolute fluorescence and absorption measurements over a dynamic range of 106 with cavity-enhanced laser-induced fluorescence. The Journal of Chemical Physics 149(1): 014201 and may be found at https://doi.org/10.1063/1.5031842




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