• Turan Erdogan

    CTO and Co-Founder, Semrock

    Turan Erdogan is CTO and cofounder of Semrock (a unit of IDEX Corporation; Rochester, NY). 

    Pennwell web 500 467
    The advent of lasers as fluorescence light sources imposes new constraints and demands on the optical filters required for optimal operation of these laser-based imaging systems...
    Figure 1. A narrow laser line combined with a narrowband laser-line cleanup filter allows optimal excitation of the desired fluorophore (here green fluorescent protein, or GFP). This, combined with a steep edge filter allows almost perfect spectral efficiency for collection of weak fluorescence signals.
    Increasingly popular, total-internal-reflection-fluorescence (TIRF) microscopy systems prefer lasers for excitation because of their spectral purity and brightness.