Frequency bandwidth of light focused through turbid media |
| |
Authors: | van Beijnum Frerik van Putten Elbert G Lagendijk Ad Mosk Allard P |
| |
Institution: | Complex Photonic Systems, Faculty of Science and Technology, University of Twente, Enschede, The Netherlands. f.vanbeijnum@alumnus.utwente.nl |
| |
Abstract: | We study the effect of frequency detuning on light focused through turbid media. By shaping the wavefront of the incident beam light is focused through an opaque scattering layer. When detuning the laser we observe a gradual decrease of the focus intensity, while the position, size,and shape of the focus remain the same within experimental accuracy. The frequency dependence of the focus intensity follows a measured speckle correlation function. We support our experimental findings with calculations based on transport theory. Our results imply wavefront shaping methods can be generalized to allow focusing of optical pulses in turbid media. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|