EM4, Inc., designs, develops and manufactures state-of-the-art, optoelectronic components for the Defense, Life Science, CATV, Telecommunication and Industrial markets.

acousto optic, acousto optics , acousto, acousto-optic , acoustic , optics , laser crystals , electro optics , electro-optic , wave plates , rf drivers , crystal growth , optical coating , fiberoptical , fibreoptical , fiber optical , fibre optical, q-switch , q-switches , pockels cell

the worlds most advanced developers of optics, electro optical and acousto optic technologies and associated rf drivers, and fibre optical technologies brought together as one global company, gooch & housego