title: Arduino Due based tool to facilitate in vivo two-photon excitation microscopy.
abstract: Two-photon excitation spectroscopy is a powerful technique for the characterization of the optical properties of genetically encoded and synthetic fluorescent molecules. Excitation spectroscopy requires tuning the wavelength of the Ti:sapphire laser while carefully monitoring the delivered power. To assist laser tuning and the control of delivered power, we developed an Arduino Due based tool for the automatic acquisition of high quality spectra. This tool is portable, fast, affordable and precise. It allowed studying the impact of scattering and of blood absorption on two-photon excitation light. In this way, we determined the wavelength-dependent deformation of excitation spectra occurring in deep tissues in vivo.
authors.affiliation: NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa, 56127 Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Artoni
authors.affiliation: NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa, 56127 Italy.
authors.forename: Silvia
authors.initials: S
authors.lastname: Landi
authors.affiliation: NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa, 56127 Italy.
authors.forename: Sebastian Sulis
authors.initials: SS
authors.lastname: Sato
authors.affiliation: NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa, 56127 Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Luin
authors.affiliation: NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa, 56127 Italy.
authors.forename: Gian Michele
authors.initials: GM
authors.lastname: Ratto
keywords: (110.0110) Imaging systems; (110.0113) Imaging through turbid media; (180.0180) Microscopy; (190.0190) Nonlinear optics; (300.0300) Spectroscopy