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    • Marco Arrigoni

    Director of Marketing, Coherent

    Marco Arrigoni is vice president of marketing at Light Conversion (Vilnius, Lithuania). He previously served as director of marketing at Coherent (Santa Clara, CA) from 2007 through 2023. 

    FIGURE 1. Three-photon excitation uses 3x the wavelength as conventional one-photon absorption. The 1300 nm excitation scheme shown here is for GCaMP6s, a genetically expressed calcium indicator. Recently Chris Xu and colleagues have demonstrated that 1300 nm can also excite longer-wavelength dyes such as Texas Red, a fluorescent dye that can be bonded to antibodies to label specific cellular components.
    Bio&Life Sciences

    Laser developments support advanced neuroscience techniques

    Marco Arrigoni
    June 21, 2022
    Three-photon imaging and two-photon optogenetic stimulation both benefit from the latest laser developments targeted squarely at neuroscience research.
    (Courtesy of Morgan Trassin)
    FIGURE 1. At ETH Zurich, an Astrella amplifier maintains output stability in spite of its proximity to a deposition chamber that reaches internal temperatures as high as 950°C.
    Lasers & Sources

    Revisiting the industrial revolution in scientific lasers

    Allan Ashmead
    Aug. 11, 2020
    A look is taken at how the industrial approach to reliability in ultrafast scientific lasers has resulted in research tools that deliver on their promise.
    (Courtesy of the Fleming group)
    FIGURE 1. A 2D electronic spectrum contains many different types of information.
    Lasers & Sources

    Ultrafast Lasers: Trends in femtosecond amplifiers—Ti:sapphire vs. ytterbium

    Marco Arrigoni
    Feb. 18, 2020
    Ti:sapphire and ytterbium femtosecond amplifier technologies—one mature, the other quite dynamic—currently provide complementary performance, so the optimum choice is really application...