Abstract

High fluences inside cavity ring-down spectroscopy optical resonators lend themselves to fluorescence or Raman spectroscopy. An instrument at 488 nm was developed to measure extinction, and fluorescence of aerosols. A detection limit of 6 x 10^-9 cm^-1Hz^-1/2 (0.6 Mm^-1Hz^-1/2) was achieved. The fluorescence spectral power collected from a single fluorescent microsphere was 10 to 20 pW/nm. This power is sufficient to obtain the spectrum of a single microsphere with a resolution of 10 nm and signal-to-noise ratio of ~10. The relative concentrations of two types of fluorescent microspheres were determined from a time-integrated fluorescence measurement of a mixture of both.

© 2005 Optical Society of America

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ACS Symp. Ser (1)

K. W. Busch and M. A. Busch (Eds.), �??Cavity ring-down spectroscopy: An ultratrace absorption measurement technique,�?? ACS Symp. Ser 720 (1999).

Aer. Science and Tech. (1)

Y.-L. Pan, J. Hartings, R. G. Pinnick, S. C. Hill, J. Halverson, and R. K. Chang, �??Single-Particle Fluorescence Spectrometer for Ambient Aerosols,�?? Aer. Science and Tech. 37, 627-638 (2003).

Aerosol Sci. Tech. (1)

H. Mossmuller, R. Varma, et al.. "Cavity Ring-down and Cavity-Enhanced Detection Techniques for the Measurement for Aerosol Extinction,�?? Aerosol Sci. Tech. 39, 30-39(2005
[CrossRef]

Anal. Chem. (1)

K. L. Bechtel, R. N. Zare, et al., �??Moving Beyond Traditional UV-Vis Absorption Detection: Cavity Ring-Down Spectroscopy for HPLC,�?? Anal. Chem. 77, 1177-1182 (2005).
[CrossRef]

Anal. Chim. Acta (1)

V. Bulatov, M. Fisher, and I. Schechter, �??Aerosol Analysis by cavity-ring-down spectroscopy,�?? Anal. Chim. Acta 466, 1-9 (2002).
[CrossRef]

Analyst (1)

D. Smith and D. B. Atkinson, �??A portable pulsed cavity ring-down transmissometer for measurement of the optical extinction of the atmospheric aerosol,�?? Analyst 126, 1216-1220 (2001).
[CrossRef]

Appl. Opt. (2)

Atmos. And Ocean Tech. (1)

A. W. Strawa, R. Casteneda, et al., �??The Measurements of Aerosol Optical Properties using Continuous Wave Cavity Ring-down Techniques,�?? J. Atmos. And Ocean Tech. 20, 454-465 (2003).

Combustion and Flame (1)

J. Luque, J. B. Jeffries, G. P. Smith, D. R. Crosley, and J. J. Scherer, �??Combined cavity ringdown absorption and laser-induced fluorescence imaging measurements of CN(B-X) and CH(B-X) in lowpressure CH4-O2-N2 and CH4-NO-O2-N2 flames,�?? Combustion and Flame 126, 1725-1735 (2001).
[CrossRef]

Field Anal. Chem. and Tech. (1)

F. L. Reyes, T. H. Jeys, et al., �??Bio-aerosol fluorescence sensor,�?? Field Anal. Chem. and Tech. 3, 240-248 (1999).

J. Aerosol Sci. (1)

Pettersson, A., E. R. Lovejoy, et al. "Measurement of aerosol optical extinction at 532 nm with pulsed cavity ring-down spectroscopy,�?? J. Aerosol Sci. 35, 995-1011(2004).

Journal of Chemical Physics (1)

J. J. L. Spaanjaars, J. J. t. Meulen, and G. Meijer, �??Relative predissociation rates of OH (A 2Σ+, v'=3) from combined cavity ring down�??Laser-induced fluorescence measurements,�?? Journal of Chemical Physics 107, 2242-2248 (1997).
[CrossRef]

Opt. Lett. (2)

Optics Letters (1)

Y.-L. Pan, V. Boutou, R. K. Chang, I. Ozden, K. Davitt, and A. V. Nurmikko, �??Application of light-emitting diodes for aerosol fluorescence detection,�?? Optics Letters 28, 1707-1709 (2003).

Other (1)

B. A. Paldus, R. Provencal, and A. Kachanov, �??Cavity Enhanced Optical Detector,�?? U.S. Patent Application 10/738,599 (2004).

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