Another Della project for the Navy: I did a photon budget that showed that this could be done optically within the power and weight constraints, and would work in bright sun as well as at night. (Optical communications are much harder to intercept or to jam than radio.)
A shootout between the two major classes of transimpedance amplifier (TIA) designs for one difficult corner of the design space.
When you're hitting a droplet with enough pulsed CO2 light to generate X-rays efficiently, you have to know exactly when it's going to cross the focus.
Producing an integrated model of circuit conditions and ion motion, allowing optimization of circuit and excitation parameters, plus sanity checking
In cooperation with Flatfrog Laboratories AB, Lund, Sweden. This one was interesting mostly due to the requirement for high and stable performance at an absolute rock-bottom cost.