Abstract
The nonlinear effect of noise-enhanced signal transmission by means of stochastic resonance in optics is studied. We investigate this effect for the novel case of spatial signals or images. With a theoretical model involving a threshold nonlinearity we describe a mechanism whereby the transmission of an image can be improved by the addition of noise. We argue that such a nonlinear mechanism can operate in different types of light scattering. With a stimulated Raman scattering experiment we verify the existence of a stochastic resonance effect in the transmission of a laser image; we show that maximal efficacy is obtained with the assistance of a speckle of sufficient intensity. The results extend the scope of stochastic resonance and can serve as a basis for further development of the effect in optics.
© 1998 Optical Society of America
Full Article | PDF ArticleMore Like This
Guangzhan Cao, Hongjun Liu, Xuefeng Li, Nan Huang, and Qibing Sun
Opt. Express 22(4) 4214-4223 (2014)
Heng Sun, Hongjun Liu, Qibing Sun, Nan Huang, Zhaolu Wang, and Jing Han
Appl. Opt. 55(12) 3351-3355 (2016)
Agnès Delahaies, David Rousseau, Jean-Baptiste Fasquel, and François Chapeau-Blondeau
J. Opt. Soc. Am. A 29(7) 1211-1216 (2012)