Abstract
We present a pixel-scale sensor that uses the Talbot effect to detect the local intensity and incident angle of light. The sensor comprises two local diffraction gratings stacked above a photodiode. When illuminated by a plane wave, the upper grating generates a self-image at the half Talbot depth. The second grating, placed at this depth, blocks or passes light depending upon incident angle. Several such structures, tuned to different incident angles, are sufficient to extract local incident angle and intensity. Furthermore, arrays of such structures are sufficient to localize light sources in three dimensions without any additional optics.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Dmytro Podanchuk, Vitalij Kurashov, Andrey Goloborodko, Volodymyr Dan’ko, Myhaylo Kotov, and Natalya Goloborodko
Appl. Opt. 51(10) C125-C132 (2012)
Dmytro Podanchuk, Andrey Kovalenko, Vitalij Kurashov, Myhaylo Kotov, Andrey Goloborodko, and Volodymyr Danko
Appl. Opt. 53(10) B223-B230 (2014)
Dmytro V. Podanchuk, Andrey A. Goloborodko, Myhailo M. Kotov, Andrey V. Kovalenko, Vitalij N. Kurashov, and Volodymyr P. Dan’ko
Appl. Opt. 55(12) B150-B157 (2016)