An eigenvalue-problem approach of blind deconvolution is developed to retrieve the information of two-dimensional subwavelength variation from far-field irradiance with an embedded-aperture configuration with three detectors. A reference signal has been implemented to determine the scaling issue, and hence it allows the exact order of magnitude of the retrieved signals to be estimated correctly. It is shown that the subwavelength variations of a two-dimensional aperture can be identified with a precision of better than a 1% error ratio.
© 2006 Optical Society of America
Fourier Optics and Optical Signal Processing
Original Manuscript: March 31, 2006
Manuscript Accepted: May 4, 2006
Shu-Chun Chu and Jyh-Long Chern, "Retrieving two-dimensional information of the subwavelength variation from far-field irradiance," J. Opt. Soc. Am. A 23, 2471-2475 (2006)