Abstract
At high frequencies (~1 GHz) acoustic attenuation severely limits the time
aperture of acoustooptic deflectors (AOD). It is shown in this paper that
decreasing the operating temperature of an AOD to ~4 K significantly reduces the
acoustic attenuation. Due to this decrease in attenuation, at a fixed bandwidth
the time–bandwidth product of an AOD is increased. Measurements are
presented for a longitudinal mode tellurium dioxide AOD which demonstrate up to
a factor of 10 increase in the time–bandwidth product.
© 1987 Optical Society of America
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