We propose a reconfigurable cylindrical concentrator designed using a transformation-optics approach when the core of the device contains a material with Kerr nonlinearity. We demonstrate that in the case of focusing Kerr nonlinearity of the material in the device, it functions as an axicon-like lens with a variable focus line that can be tuned by changing the incident electromagnetic field. We also numerically study the cases where the core of the device is made of a material with defocusing Kerr nonlinearity or consists of a negative index material and predict beam splitting or localized field enhancement at the boundary of the core, respectively.
© 2012 Optical Society of America
Original Manuscript: September 20, 2012
Revised Manuscript: October 27, 2012
Manuscript Accepted: November 26, 2012
Published: December 14, 2012
Apra Pandey and Natalia M. Litchinitser, "Nonlinear light concentrators," Opt. Lett. 37, 5238-5240 (2012)