Refreshments are served at 3:00 p.m. in Physics room 242.https://engineering.purdue.edu/ECE/People/profile?resource_id=75045
In this talk, I will show how photonic crystal metamaterials - a novel class of manmade materials that strongly modify the photonic density of modes from that of a homogeneous medium - can be employed to generate tailored optical spectra. In particular, it will be shown that linear optical generation processes, such as thermal radiation, as well as nonlinear processes, such as third-harmonic generation and Raman scattering, can be strongly suppressed or enhanced in a controlled fashion, up to certain limits. Furthermore, novel physical effects will be explored, including strong modification of nonlinear coefficients.
Projected applications include the efficient conversion of heat into electric power; generation of optical signals at otherwise inaccessible wavelengths; and enhanced sensing and optical signal processing.