Publications [#246382] of Daniel J Gauthier

Papers Published
  1. Cohen, SD; Cavalcante, HLDDS; Gauthier, DJ, Subwavelength position sensing using nonlinear feedback and wave chaos., Phys Rev Lett, vol. 107 no. 25 (December, 2011), pp. 254103 [22243079], [doi] .

    We demonstrate a position-sensing technique that relies on the inherent sensitivity of chaos, where we illuminate a subwavelength object with a complex structured radio-frequency field generated using wave chaos and nonlinear feedback. We operate the system in a quasiperiodic state and analyze changes in the frequency content of the scalar voltage signal in the feedback loop. This allows us to extract the object's position with a one-dimensional resolution of ~λ/10,000 and a two-dimensional resolution of ~λ/300, where λ is the shortest wavelength of the illuminating source.