Gooch & Housego PLC researches, designs, engineers, manufactures, and sells photonic systems, components, and instrumentation in the United States, continental Europe, the United Kingdom, the Asia Pacific, and internationally. It operates in four segments: Aerospace & Defence, Life Sciences, Industrial, and Scientific Research. The company offers acoustic products, such as acoustic optic modulators, beam deflectors, fiber-coupled modulators, frequency shifters, model lockers, multi-channel modulators, pulse pickers and cavity dumpers, acousto-optic tunable filters, and RF drivers; and crystal optics, including lithium niobate wafers, nonlinear optic crystals, and periodically-poled lithium niobate. It also provides electro-optic products comprising lithium niobate Q-switches, pockels cell drivers, and pockels cells; and fiber optics comprising fiber-coupled pump lasers, distributed feedback lasers and modules, high speed detectors, benchtop laser controllers, fused fiber optic components, fiber optic assemblies, OCT components and subsystems, and optical fiber amplifiers. In addition, the company offers precision optic products consisting of precision prisms and lenses, corner cubes, SWIR lens assemblies, opto-mechanical assemblies, precision mirrors, synchrotron and research grade mirrors, plate and cube beamsplitters, optical windows and flats, waveplates, superpolished SROC, ring laser gyroscope components, infrared optics, optical domes, ML optics. Further, it provides instrumentation products, including spectroradiometers, spectral imaging and synthesis, spectral radiance and luminance standards, spectral irradiance and illuminance standards, reflectance standards, integrating spheres, radiometers/photometers, detector standards, precision constant current sources, imaging photometers, and colorimeters/photometers. Gooch & Housego plc was founded in 1948 and is based in Ilminster, the United Kingdom.