Electro-Optics Technology (EOT) is a company that supplies enabling components and diagnostic equipment for manufacturers and users of high-power laser systems. Its products include Faraday rotators and optical isolators for use with laser diodes, fiber lasers, solid-state lasers, and quantum cascade lasers (QCL). The company also stocks photodetectors used to monitor the output of pulsed, mode-locked, and externally modulated CW lasers, and fiber collimators for high-power lasers.