FlexSorb™ laser shutters from nmLaser Products (San Jose, CA) feature a high damage threshold, small size, and quiet operation. The moving part is a low-mass, flexible, ferromagnetic cantilever membrane that is moved in and out of the beam by noncontact electromagnetic techniques. The shutters are immersion cleaning compatible and can be used for clean room type applications. They are designed for 24V type circuits with a timed impulse to open and a lower voltage for long-term hold. Aperture sizes range from 3mm to 14mm. They feature switching speeds from under 10 msec to 50 msec, and exhibit low backscatter from DUV through FIR wavelengths.
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