A CO2 laser range finder has been built utilizing an acoustooptic modulator to obtain an amplitude- modulated optical beam from a cw laser operating in the TEM00 mode.1 An on-off deflected beam was obtained by driving the modulator by a binary pulse-code modulated 40-MHz carrier. At this frequency the deflection efficiency amounted to 20% (maximum of our modulator), and a deflection rise time of 300 nsec was achieved.

© 1982 Optical Society of America

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