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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 9 — May. 2, 2005
  • pp: 3376–3387

Novel detection of aerosols: combined cavity ring-down and fluorescence spectroscopy

Bruce A. Richman, Alexander A. Kachanov, Barbara A. Paldus, and Anthony W. Strawa  »View Author Affiliations

Optics Express, Vol. 13, Issue 9, pp. 3376-3387 (2005)

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High fluences inside cavity ring-down spectroscopy optical resonators lend themselves to fluorescence or nonlinear optical spectroscopy. An instrument at 488 nm was developed to measure extinction, and fluorescence of aerosols. A detection limit of 6×10-9 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

OCIS Codes
(300.2530) Spectroscopy : Fluorescence, laser-induced
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:
Research Papers

Original Manuscript: March 17, 2005
Revised Manuscript: April 15, 2005
Published: May 2, 2005

Bruce Richman, Alexander Kachanov, Barbara Paldus, and Anthony Strawa, "Novel detection of aerosols: combined cavity ring-down and fluorescence spectroscopy," Opt. Express 13, 3376-3387 (2005)

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