Design and construction of a wideband efficient electro-optic modulator

construction, together with the results, are given.1. INTRODUCTIONWideband chirping, or rapid frequency shifting, is needed for laser radar for the same reasons as it is needed forsome types of microwave radar. A frequency modulator for the mid stages of a laser radar transmitter should have ahigh power output as the last stages of amplification are necessarily gain-bandwidth limited. Modulation efficienciesabove 50% andGHz bandwidth require a long traveling wave interaction between the modulating drive and the laser