Publications

Enhanced optical nonlinearities in the near-infrared using III-nitride heterostructures coupled to metamaterials

Wolf, Omri W.; Allerman, A.A.; Ma, Xuedan M.; Wendt, J.R.; Song, Alex Y.; Shaner, Eric A.; Brener, Igal B.

We use planar metamaterial resonators to enhance by more than two orders of magnitude the near infrared second harmonic generation obtained from intersubband transitions in III-Nitride heterostructures. The improvement arises from two factors: employing an asymmetric double quantum well design and aligning the resonators' cross-polarized resonances with the intersubband transition energies. The resulting nonlinear metamaterial operates at wavelengths where single photon detection is available, and represents a different class of sources for quantum photonics related phenomena.