Optical properties of light emitting diodes with a cascading plasmonic grating

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50996

Title:	Optical properties of light emitting diodes with a cascading plasmonic grating
Authors:	Wang,CM;Tsai,YL;Tu,SH;Lee,CC;Kuo,CH;Chang,JY
Contributors:	光電科學與工程學系
Keywords:	SURFACE-PLASMONS;EXTRACTION ENHANCEMENT;GAN;EMISSION;POLARITONS;CRYSTAL;LEDS
Date:	2010
Issue Date:	2012-03-27 18:15:00 (UTC+8)
Publisher:	國立中央大學
Abstract:	In this paper, the polarization dependent optical properties of InGaN/GaN multi-quantum wells (MQWs) LED with cascading plasmonic gratings are investigated using an angle-resolved photoluminescence (ARPL) spectrometer. The plasmonic gratings consist of two Ag gratings with a half-pitch displacement. The ARPL spectra of the TE-TM state present a broadband emission with resonance dips occasioned by the SP resonance while the TM-TE state presents resonance peaks with low sideband emission. The resonance properties can be tuned by modifying the geometric parameters of the plasmonic grating. The ARPL spectrum of the LED sample with pure GaN 1D grating is also measured and discussed. The investigated plasmonics LED represents resonance optical properties different from the conventional surface relief LED, which can be used in special applications. (C) 2010 Optical Society of America
Relation:	OPTICS EXPRESS
Appears in Collections:	[Department of Optics and Photonics] journal & Dissertation

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