HETERODYNE LASER INSTANTANTEOUS FREQUENCY MEASUREMENT SYSTEM

摘要

HETERODYNE LASER INSTANTANEOUS FREQUENCY MEASUREMENT SYSTEM A heterodyne laser instantaneous frequency measurement system is disclosed. The system utilizes heterodyning of a pulsed laser beam with a contiuous wave laser beam to form a beat signal. The beat signal is processed by a controller or computer which determines both the average frequency of the laser pulse and any changes or chirp of the frequency during the pulse.