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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 5 — Mar. 8, 2004
  • pp: 753–763

Double-pass Fourier transform imaging spectroscopy

R. Heintzmann, K. A. Lidke, and T. M. Jovin  »View Author Affiliations

Optics Express, Vol. 12, Issue 5, pp. 753-763 (2004)

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Fourier Transform Imaging Spectroscopy (FTIS) has recently emerged as a widely used tool for spectral imaging of biological fluorescent samples. Here we report on a novel double-pass FTIS system capable of obtaining an excitation as well as an emission spectrum of a fluorescent sample with only a single sweep of the interferometer. This result is achieved by a modification of an existing FTIS system, which now places the excitation source before the interferometer so as to spectrally modulate the excitation as well as the detection. An analysis of the acquired signal allows for the reconstruction of the excitation as well as the emission spectrum of each fluorophore, assuming an independence of the two spectra for each fluorophore. Due to the patterned excitation generated by the Sagnac interferometer, a substantial degree of optical sectioning is achieved at excitation wavelengths. Further analysis of the acquired data also enables the generation of optically sectioned emission images. A theoretical analysis and experimental data based on fluorescent beads are presented.

© 2004 Optical Society of America

OCIS Codes
(070.4790) Fourier optics and signal processing : Spectrum analysis
(170.2520) Medical optics and biotechnology : Fluorescence microscopy
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4730) Medical optics and biotechnology : Optical pathology
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(180.1790) Microscopy : Confocal microscopy
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms

ToC Category:
Research Papers

Original Manuscript: January 12, 2004
Revised Manuscript: February 19, 2004
Published: March 8, 2004

R. Heintzmann, K. Lidke, and T. Jovin, "Double-pass Fourier transform imaging spectroscopy," Opt. Express 12, 753-763 (2004)

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