標題: Optical properties of light emitting diodes with a cascading plasmonic grating
作者: Wang, Chih-Ming
Tsai, Yao-Lin
Tu, Sheng-Han
Lee, Chien-Chieh
Kuo, Cheng-Huang
Chang, Jenq-Yang
照明與能源光電研究所
Institute of Lighting and Energy Photonics
公開日期: 6-Dec-2010
摘要: 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
URI: http://dx.doi.org/10.1364/OE.18.025608
http://hdl.handle.net/11536/26237
ISSN: 1094-4087
DOI: 10.1364/OE.18.025608
期刊: OPTICS EXPRESS
Volume: 18
Issue: 25
起始頁: 25608
結束頁: 25614
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