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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 9 — May. 1, 2006
  • pp: 1310–1312

Prism-based multicolor fluorescence correlation spectrometer

Ling Chin Hwang, Marcel Leutenegger, Michael Gösch, Theo Lasser, Per Rigler, Wolfgang Meier, and Thorsten Wohland  »View Author Affiliations

Optics Letters, Vol. 31, Issue 9, pp. 1310-1312 (2006)

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We report the design and application of a prism-based detection system for fluorescence (cross) correlation spectroscopy. The system utilizes a single laser wavelength for the simultaneous excitation of several dyes of different emission spectra. Fluorescence light is spectrally separated with a prismatic setup, and wavelengths are selected by scanning a fiber-coupled avalanche photodiode across the image spots. Multicolor autocorrelations are demonstrated with standard and tandem dyes, and fluorescence cross-correlation measurements of biotinylated nanocontainers and streptavidin are presented. This spectrometer offers high optical stability and no focal volume mismatch for the multicolor detection of molecular dynamics and interactions, with single-molecule sensitivity.

© 2006 Optical Society of America

OCIS Codes
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(230.5480) Optical devices : Prisms
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Optical Devices

Original Manuscript: November 29, 2005
Manuscript Accepted: January 18, 2006

Virtual Issues
Vol. 1, Iss. 6 Virtual Journal for Biomedical Optics

Ling Chin Hwang, Marcel Leutenegger, Michael Gösch, Theo Lasser, Per Rigler, Wolfgang Meier, and Thorsten Wohland, "Prism-based multicolor fluorescence correlation spectrometer," Opt. Lett. 31, 1310-1312 (2006)

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