Shen, Kun-ChingKun-ChingShenChen, Cheng-YenCheng-YenChenHuang, Chi-FengChi-FengHuangWang, Jhy-YangJhy-YangWangLu, Yen-ChengYen-ChengLuCHIH-CHUNG YANGYEAN-WOEI KIANGYING-JAY YANG2018-09-102018-09-102008-0100036951http://scholars.lib.ntu.edu.tw/handle/123456789/342441https://www.scopus.com/inward/record.uri?eid=2-s2.0-38049015247&doi=10.1063%2f1.2829794&partnerID=40&md5=b1153893dd2f04be4ba317938846c7b3The authors report the observation of a polarization-dependent surface plasmon (SP) feature on a one-dimensional Ag-grating structure through the SP coupling with an InGaNGaN dual-quantum-well structure closely below the metal grating. Polarized photon output is observed because only the momentum matching condition of the SP mode propagating in the direction perpendicular to the grating grooves can be reached through the diffraction of the fabricated grating and, thus, the SP radiation efficiency is significantly enhanced only in this polarization. The dispersion curve of the observed SP mode shows a group velocity of 2.4× 108 ms, which manifests the SP characteristics in the air/ AgGaN grating structure. © 2008 American Institute of Physics.application/pdfapplication/pdfDiffraction; Diffraction gratings; Dispersion (waves); Gallium nitride; Momentum; Nitrogen compounds; One dimensional; Photons; Polarization; Radiation effects; Semiconductor quantum wells; Dual quantum well structure; Fabricated gratings; Momentum matching condition; Polarization dependent coupling; Surface plasmon resonancejournal article10.1063/1.28297942-s2.0-38049015247WOS:000252284200138