Optical LADARs require high sensitivity near 1 nanowatt while also having fast recovery to overloads as high as
100W. Fast recovery is required in order to detect a secondary target from behind a bright target. In the current work,
we have created a new family of LADAR receivers having a higher gain bandwidth product than most commercially
available receivers. While maintaining the receiver bandwidth, a 4.8 × increase in responsivity can now be achieved.
With cooling of the APD, these new receivers are offering more than a twofold time reduction of the NEP, allowing
longer range coverage of the LADAR system. In addition, a new feature is the improvement of the overload recovery
to 93ns from an laser pulse of 56mW, allowing close secondary target detection.
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