The FlexSorb line of laser shutters from nmLaser Products Inc. features a high damage threshold, quick switching speed, a small size, quiet operation and good thermal dissipation. The only moving part is a low-mass, flexible ferromagnetic cantilever membrane that operates in and out of the beam by noncontact electromagnetic techniques, reducing opening and closing shock, vibration and wear. The flexures are unaffected by foreign particles clinging to the magnetic pole, and they offer long lifetimes. All units are immersion cleaning-compatible and can be provided for cleanroom applications. Slightly overdamped controllers eliminate system ring, ensuring efficient energy transfer to the magnet. That heat is merged with the laser optical absorption heat and is dissipated using thermal conduction to a common mounting surface.