ALBUQUERQUE, N.M., Nov. 21, 2012 — CVI Melles Griot has introduced SafeClose laser shutters, based on rotor drive actuation technology modified to close on “power down.” The proprietary rotor drive actuator provides multimillion-cycle operation and withstands harsh environmental conditions, including temperature variations from −40 to 70 °C), high shock and vibration. Designed for laser safety and switching, the shutter maintains laser-safe conditions by closing automatically when power is interrupted. The fail-safe magnetic return mechanism guarantees that the blade will reliably close upon signal interruption. A separate controller is not required, and a 9-VDC signal is sufficient to actuate the shutter and hold it open. With its small diameter/aperture, it works efficiently with small-beam-diameter lasers and is provided with a standard gold-plated blade for high laser damage thresholds. Other optional blade coatings are available.