|Title||Broadly tunable quasi-phase-matching in nonlinear metamaterials|
|Publication Type||Journal Article|
|Year of Publication||2011|
|Authors||A. Rose, D.R. Smith|
|Journal||Physical Review A|
The ability to tune the quasi-phase-matching (QPM) frequency is a highly desirable though lacking feature of many nonlinear devices. To this end, we consider QPM in a special class of active nonlinear metamaterials (MMs), whose properties can be controlled postfabrication. By application of a tunable, periodic perturbation in the linear susceptibility (magnetic or electric) of a MM, a single nonlinear device can be constructed to operate over an exceedingly broad bandwidth. We propose a nonlinear MM for QPM second-order harmonic generation at terahertz frequencies, predicted to have a tunable bandwidth of over 100%.
|Short Title||Phys. Rev. A|