Frequency domain lifetime and spectral imaging microscopy

Serge Pelet, Michael J.R. Previte, Daekeun Kim, Ki Hean Kim, Tsu Te J. Su, Peter T.C. So

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


In the femtoliter observation volume of a two-photon microscope, multiple fluorophores can be present and complex photophysics can take place. Combined detection of the fluorescence emission spectra and lifetimes can provide deeper insight into specimen properties than these two imaging modalities taken separately. Therefore, we have developed a detection scheme based on a frequency-modulated multichannel photomultiplier, which measures simultaneously the spectrum and the lifetime of the emitted fluorescence. Experimentally, the efficiency of the frequency domain lifetime measurement was compared to a time domain set-up. The performance of this spectrally and lifetime-resolved microscope was evaluated on reference specimens and living cells labeled with three different stains targeting the membrane, the mitochondria, and the nucleus.

Original languageEnglish (US)
Pages (from-to)861-874
Number of pages14
JournalMicroscopy Research and Technique
Issue number11
StatePublished - Nov 2006
Externally publishedYes


  • Fluorescence lifetime imaging microscopy
  • Time correlated singe photon counting
  • Two-photon microscopy

ASJC Scopus subject areas

  • Anatomy
  • Histology
  • Instrumentation
  • Medical Laboratory Technology


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