Publications [#246382] of Daniel J. Gauthier
Papers Published
- Cohen, SD; Cavalcante, HLDDS; Gauthier, DJ, Subwavelength position sensing using nonlinear feedback and wave chaos.,
Physical Review Letters, vol. 107 no. 25
(December, 2011),
pp. 254103 [22243079], [doi]
(last updated on 2019/07/17)Author's Comments:
Selected as an "Editor's Choice."Abstract:
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.