All-semiconductor negative-index plasmonic absorbers

• Published in: Physical review letters Vol. 112; no. 1; p. 017401
• Main Authors: Law, S, Roberts, C, Kilpatrick, T, Yu, L, Ribaudo, T, Shaner, E A, Podolskiy, V, Wasserman, D
• Format: Journal Article
• Language: English
• Published: United States 10.01.2014

We demonstrate epitaxially grown all-semiconductor thin-film midinfrared plasmonic absorbers and show that absorption in these structures is linked to the excitation of highly confined negative-index surface plasmon polaritons. Strong (>98%) absorption is experimentally observed, and the spectral...