Fig. 4: k-space dissipated power density.
From: Enhanced laser action from smart fabrics made with rollable hyperbolic metamaterials

The k-space dissipated power density without considering loss effect for the a HMM1 and b HMM2. c, d Corresponding dissipated power densities with considering the loss effect. The white line is the emission center of PNCs at the wavelength of 530 nm. For the HMM2 sample, the k-space dissipated power density shows stronger coupling of the emitter to HMM supported plasmonic modes.