Ivanov, DenisShcheslavskiy, VladislavMärki, IwanLeutenegger, MarcelLasser, Theo2009-01-092009-01-092009-01-09200910.1063/1.3077309https://infoscience.epfl.ch/handle/20.500.14299/33402WOS:000263804400093We report results on two-photon total-internal-reflection fluorescence correlation spectroscopy with radially polarized light. The combination of liquid crystal spatial light modulator, providing radial polarization, with ultrafast laser (picosecond Nd:GdVO4 laser) allowed us to take the advantage of nonlinear optical contrast mechanisms to suppress the side-lobe energy specific for radial polarization and reduce the effective excited volume twice compared to one-photon evanescent wave excitation in fluorescence correlation spectroscopy.fluorescence spectroscopyhigh-speed optical techniqueslight polarisationoptical correlationphoton correlation spectroscopytwo-photon spectroscopyEvanescent-WaveMicroscopyExcitationPolarizationtext::journal::journal article::research article