Figure 5

Extinction coefficient and out-coupling efficiency as functions of in-plane wavevector and photon energy. (a) Calculated k _x and energy dependencies of the extinction (panels (a)–(e)) and emissivity (panels (f)–(j)) spectra of the TM-polarized light for the sample with different air slit width. The magnitude of the extinction coefficient and emissivity is shown by different colors and the color scale is explained in color bars on the right. The red dots in panels (a)–(e) represent the experimentally observed extinction peaks, while the blue dots in panels (f)–(j) show the experimental PL peaks. The peak positions for the sample with 280 nm air slit are taken from ref.²³.