A detailed study of evanescent waves in a two-dimensional photonic crystal known to be a left-handed medium for propagating modes is presented. We have not found universal amplification of the evanescent modes, connected with negative µ and ϵ of the bulk photonic crystal. An analytical expression for the intensity distribution near the far-field focus is obtained using diffraction theory. This distribution contains some novel features and establishes a new diffraction limit for flat lenses. The distribution is generalized for multiple sources located at different points and is in very good agreement with computer simulations.
© 2006 Optical Society of America
Original Manuscript: June 28, 2005
Revised Manuscript: November 28, 2005
Manuscript Accepted: December 6, 2005
Chengyu Li, J. M. Holt, and A. L. Efros, "Far-field imaging by the Veselago lens made of a photonic crystal," J. Opt. Soc. Am. B 23, 490-497 (2006)