Open AccessVideo-speed detection of the absolute position of a light point on a large-area photodetector based on luminescent waveguides
Author(s) -
Robert A. Koeppe,
Anton Neulinger,
Petr Bartu,
Siegfried Bauer
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.002209
Subject(s) - photodiode , photodetector , optics , materials science , planar , foil method , optoelectronics , waveguide , physics , computer science , computer graphics (images) , composite material
A large-area photosensor is presented that uses the coupling of light into the planar waveguide mode of a polycarbonate foil by luminescent dyes to extend the active area of silicon photodiodes attached to the surface of the foil in a regular pattern. The photodiode signal is directly related to the distance between the point where light is coupled into the foil and the photodiode, thus enabling a precise recovery of the position of a localized light signal hitting the foil. We present a large-area device that can trace the movement of a light point generated by a laser pointer hitting its surface.