Request InfoG&H• 1064-nm wavelength • 100-W RF power rating • >1-GW cm–2 damage threshold Gooch & Housego plc has developed the Stallion, a water-cooled acousto-optic Q-switch for high-power pulsed Nd:YAG laser systems, both lamp and diode-pumped, as used for laser marking, engraving, cutting or drilling, and for surgery and lithography. Acousto-optic Q-switches are special modulators designed for use inside laser cavities. They have low insertion loss and can withstand very high laser powers; however, cooling typically is required for them to do so. 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