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Surface phonon polariton characteristics of In(0.04)Al(0.06)Ga(0.90)N/AlN/Al(2)O(3) heterostructure.

S S Ng, S C Lee, S K Mohd Bakhori, Z Hassan, H Abu Hassan, V A Yakovlev, N N Novikova, and E A Vinogradov

Opt Express 18(10):10354-9 (2010) PMID 20588890

Surface phonon polariton (SPP) characteristics of In(0.04)Al(0.06)Ga(0.90)N/AlN/Al(2)O(3) heterostructure are investigated by means of p-polarized infrared (IR) attenuated total reflection spectroscopy. Two absorption dips corresponding to In(0.04)Al(0.06)Ga(0.90)N SPP modes are observed. In addition, two prominent dips and one relatively weak and broad dip corresponding to the Al(2)O(3) SPP mode, In(0.04)Al(0.06)Ga(0.90)N/Al(2)O(3) interface mode, and Al(2)O(3) bulk polariton mode, respectively, are clearly seen. No surface mode feature originating from the AlN layer is observed because it is too thin. Overall, the observations are in good agreement with the theoretical predictions. (c) 2010 Optical Society of America.

DOI: 10.1364/OE.18.010354
Version: za2963e q8zaa q8zb2 q8zc6 q8zd1 q8zeb q8zf4 q8zge
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