Single and double photon excitation of dyes in highly scattering media of biological significance

Giannis Zacharakis; Theodore G. Papazoglou

doi:10.1117/12.475626

16 July 2002 Single and double photon excitation of dyes in highly scattering media of biological significance

Giannis Zacharakis, Theodore G. Papazoglou

Proceedings Volume 4707, Saratov Fall Meeting 2001: Optical Technologies in Biophysics and Medicine III; (2002) https://doi.org/10.1117/12.475626
Event: Saratov Fall Meeting 2001, 2001, Saratov, Russian Federation

Abstract

The coherent properties of the temporally and spectrally narrowed emission of organic dyes hosted inside artificial scattering matrices, after one- and two-photon excitation, were investigated by performing photon-counting measurements. The excitation source was a frequency doubled 200 femtosecond pulsed laser emitting at 400 nm for one- photon or the 800 nm fundamental emission for two-photon excitation. Spectral and temporal features were simultaneously recorded using a spectrograph and a streak camera operating on the photon counting mode. Photon number distributions were thus created. The temporal coherence of the laser-like emission above and bellow the excitation energy threshold has been investigated from the photon number distributions obtained.

Citation Download Citation

Giannis Zacharakis and Theodore G. Papazoglou "Single and double photon excitation of dyes in highly scattering media of biological significance", Proc. SPIE 4707, Saratov Fall Meeting 2001: Optical Technologies in Biophysics and Medicine III, (16 July 2002); https://doi.org/10.1117/12.475626

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