Optical parametric amplification controlled by the auxiliary electromagnetic field enables transparency, amplification, and oscillation with no cavity in strongly absorbing negative-index metamaterials. The opposite directions of the wave vector and the Poynting vector in such materials result in extraordinary optical properties, including “backward” phase matching and the generation of entangled pairs of left- and right-handed counterpropagating photons.
© 2006 Optical Society of America
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
Original Manuscript: February 6, 2006
Revised Manuscript: April 17, 2006
Manuscript Accepted: April 17, 2006
Alexander K. Popov and Vladimir M. Shalaev, "Compensating losses in negative-index metamaterials by optical parametric amplification," Opt. Lett. 31, 2169-2171 (2006)