Apparatus and method for detecting two photon absorption KU Leuven
The present invention relates to an apparatus for detecting a two-photon absorption event comprising : - a pulsed laser light source having an emission spectrum with a linewidth centred at a first wavelength L1; - a detector comprising a two-dimensional array of n x m pixels, with m and n > 2, wherein each pixel comprises a photodiode having a bandgap energy Eg and operable below the avalanche breakdown voltage of the photodiode, - filtering means disposed between the pulsed laser light source and the detector, said filtering means comprising a first filter configured to substantially ...