Observation of Tamm plasmon polaritons in visible regime from ZnO/Al2O3 distributed Bragg reflector - Ag interface |
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| Authors: | SH Tsang XF Li HK Liang |
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| Institution: | a School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singaporeb Department of Applied Physics, the Hong Kong Polytechnic University, Hung Hum, Kowloon, Hong Kongc Blackett Laboratory, Department of Physics, Imperial College London, SW7 2AZ, UKd Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore |
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| Abstract: | Ag coated ZnO/Al2O3 distributed Bragg reflectors (DBRs), which were fabricated by a modified filtered cathodic vacuum arc technique at room temperature, shown the formation of visible Tamm plasmon polaritons (TPP). By varying the thickness of Ag and top ZnO dielectric layer of the DBR, it can be verified that the excitation of dip at the stopband of the reflection spectrum is related to TPPs. As visible light was used to excite TPPs, the corresponding effective mass can be reduced to 1.3 × 10− 5 of the free electron mass. |
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| Keywords: | Distributed Bragg reflector Surface plasmon Tamm plasmon polariton |
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