SEARCH Articles Figures Tables Fluorescence microscopy single-photon timing Fluorescence picosecond time-resolved single photon counting Fluorescence spectroscopy time-correlated single-photon counting Photon fluorescence Photon fluorescent Resonance energy transfer single-photon fluorescence Single molecule fluorescence techniques photon counting histograms Single photon counting technique fluorescence Single-photon excited fluorescence Single-photon excited fluorescence chromophores Single-photon fluorescence anisotropy Single-photon fluorescence applications Single-photon fluorescence principles Single-photon fluorescence steady-state detection Single-photon fluorescence time-resolved detection