Phase singularities in complex fields are deep-subwavelength optical entities of wide interest. Their distributions in two-dimensional random waves are for example reminiscent of those of particles in ionic liquids. By mapping the in-plane complex optical field above a chaotic resonator, we experimentally determine the statistics of phase singularities in random waves. All the measured quantities are in excellent agreement with theoretical predictions.

B. Di Bartolo , J. Collins , L. Silvestri
Dordrecht: Springer
NATO Science for Peace and Security Series B: Physics and Biophysics (NAPSB)

De Angelis, L., van der Wel, R. E. C., le Feber, B., & Kuipers, K. (2017). Phase Singularities in Random Waves: Exploring Optical Statistics at the Nanoscale. In B. Di Bartolo, J. Collins, & L. Silvestri (Eds.), Nano-Optics : Principles Enabling Basic Research and Applications (pp. 495–497). Dordrecht: Springer. doi:10.1007/978-94-024-0850-8_48