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Enhancement of GaAs/InGaAs quantum well emission by disordered gold nanoparticle arrays |
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| Authors: | Hongwei Gao Jinghua Teng Soo Jin Chua Ning Xiang |
| Affiliation: | 1. Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore 2. Institute of Materials Research and Engineering, Singapore, 117602, Singapore 3. Singapore Institute of Technology, Singapore, 138683, Singapore |
| Abstract: | Coupling effect of surface plasmon (SP) with InGaAs/GaAs QW emission is demonstrated experimentally. The SP resonance is generated by disordered arrays of Au nanodisks on the InGaAs/GaAs QW surface. More than twofold enhancement in QW PL is observed. Theoretical simulations also indicated that the disordered arrays of Au structures enlarged the cone angle for which light can be radiated out. The larger angle enhances the PL intensity. |
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