Gooch & Housego PLC is a photonics technology company, which manufactures optical components and systems. It provides photonics solutions for industrial, aerospace and defense, life sciences and scientific research applications. It operates through four market sectors: Aerospace & Defense, Life Sciences, Industrial and Scientific Research. Aerospace & Defense includes target designation and range finding; guidance and navigation; countermeasures; Space Photonics, and surveillance, displays and secure communications. Industrial comprises the industrial laser market for use in the semiconductor and microelectronic industries, and also includes other industrial applications, such as metrology and telecommunications. Scientific research covers academic and government-funded research, including multi-national projects. The Life sciences business includes optical coherence tomography, laser surgery, microscopy and development and manufacturing of medical and diagnostic devices.