Nanowire Target Laser Absorption for Fusion Drives

Getting more laser energy into the plasma is one of the concrete engineering problems in laser-driven inertial confinement fusion: a flat solid target reflects much of the beam, because absorption only happens in a thin resonance layer near the critical-density surface. This simulator models the alternative used in nanostructured-target research — etching the target's front face into an array of sub-wavelength nanowires so incoming light scatters repeatedly through the porous forest before it can escape, dramatically raising the absorbed fraction. Toggle between a nanowire array and an equivalent flat surface, tune the wire aspect ratio, packing fraction, laser incidence angle and drive intensity, and watch individual photon packets scatter (or specularly reflect) in real time while the live readouts track the absorption fraction, the coupling gain over a flat target, and the resulting hot-electron temperature from the relativistic ponderomotive scaling law.