Nonlinear and breaking micron waves at the edge of laser-liquified indium pool

We have discovered solidified fossils of micron-sized nonlinear and breaking surface waves of 10 micron depth on the edge of a liquid indium pool. These are likely the result of driven capillary-gravity waves. These results were obtained with a 30 nanosecond laser beam interacting with a thin indium target. The laser fluence varied around 4.25 J/cm$^{2}$ . As the fluence is increased, the waves ``break-and-spill'' and elongated fingers and spherical bubbles appear more frequently on the fossil surface.