Gooch & Housego PLC engages in the manufacture and sale of acousto-optics, electro-optics, fiber optics, and precision optics and systems in the United Kingdom, North America, Europe, the Asia Pacific, and internationally. It offers acousto-optic products, such as acoustic-optic modulators, deflectors, frequency shifters, mode lockers, pulse pickers, Q-switches, tunable filters, and RF drivers; crystal optics, including crystals and nonlinear optics, lithium niobate wafers, and periodically-poled lithium niobite; and electro-optics, such as pockels cells, lithium niobate Q-switches, and pockels cell drivers. The company also provides fiber optics, such as DFB lasers and modules, fiber-coupled pump lasers, high-speed detectors and power combiners, benchtop laser controllers, polarization-maintaining and single-mode fused fiber couplers, polarization diverse receivers, ruggedized and wideband couplers, planar lightwave circuits, variable optical delay lines, and fiber-coupled modulators; precision optics, including beam splitters, corner cubes, optical domes, optical windows and flats, polymer optics, precision lenses, precision mirrors, precision prisms, ring laser gyroscope components, synchrotron mirrors, waveplates, optical bindings, magnetorheological finishing, optical coatings, single point diamond turning, and super polishing; lens systems; and vision systems for armored fighting vehicles, including embedded image periscope and sighting systems, enhanced drivers vision system, saber commander/gunner sights, spares and repairs, specter camera modules, and unity vision periscopes; and medical devices, in-vitro diagnostics, and laboratory instruments. The company's products are used in semiconductor and microelectronic, metrology, telecommunications, and scientific research industries. Gooch & Housego plc was founded in 1948 and is headquartered in Ilminster, the United Kingdom.