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Novel femtosecond light source aids biosensing

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Yb:KGW laser emits a second harmonic at ~520 nm and 180-fs pulses

Hank Hogan

An ideal laser for fluorescence lifetime systems should have a repetition rate of several megahertz, a pulse duration much shorter than the fluorescence decay of the dye and the appropriate operating wavelength. That combination has proved challenging to achieve. Now researchers at the University of Toronto and at the University of Toronto at Mississauga, both in Ontario, Canada, have developed a femtosecond laser — based on an ytterbium-doped potassium-gadolinium-tungstate crystal — that fits these requirements. The Yb:KGW laser could act as the source in tools for clinical...Read full article

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    Published: August 2006
    BiophotonicsCommunicationsdefenseindustrialResearch & TechnologySensors & Detectors

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