Journal
APPLIED SPECTROSCOPY
Volume 54, Issue 12, Pages 1837-1841Publisher
SOC APPLIED SPECTROSCOPY
DOI: 10.1366/0003702001948943
Keywords
Raman spectroscopy; Teflon (R)-AF; liquid core optical fiber; waveguide capillary cell; liquid core waveguide; fluorescence; rhodamine 6G
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Liquid core optical fiber (LCOF) waveguides have been used to enhance the Raman sensitivity of liquid sample measurements by more than two orders of magnitude. These waveguides can also enhance photobleaching of fluorescence in transparent liquids. We report the reduction of fluorescence intensity by more than two orders of magnitude by rapid photobleaching of solutions illuminated in an LCOF. The same solutions showed no detectable photobleaching when illuminated in a cuvette. The observed rates of photobleaching are in good quantitative agreement with theory.
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