Active tuning of surface phonon polariton resonances via carrier photoinjection
| Autor: | Mijin Kim, Chase T. Ellis, James Long, Joshua D. Caldwell, Joseph G. Tischler, Bryan T. Spann, O. J. Glembocki, Daniel Ratchford, Adam D. Dunkelberger, I. Vurgaftman, Jeffrey C. Owrutsky, Chul Soo Kim, Alexander J. Giles |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Condensed Matter - Materials Science Materials science business.industry Phonon Nanophotonics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Physics::Optics 02 engineering and technology Surface phonon 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Blueshift Condensed Matter::Materials Science Laser linewidth Semiconductor 0103 physical sciences Polariton Optoelectronics 0210 nano-technology business Plasmon |
| Zdroj: | Nature Photonics. 12:50-56 |
| ISSN: | 1749-4893 1749-4885 |
| DOI: | 10.1038/s41566-017-0069-0 |
| Popis: | Surface phonon polaritons (SPhPs) are attractive alternatives to infrared plasmonics for subdiffractional confinement of infrared light. Localized SPhP resonances in semiconductor nanoresonators are narrow, but that linewidth and the limited extent of the Reststrahlen band limit spectral coverage. To address this limitation, we report active tuning of SPhP resonances in InP and 4H-SiC by photoinjecting free carriers into nanoresonators, taking advantage of the coupling between the carrier plasma and optic phonons to blueshift SPhP resonances. We demonstrate state-of-the-art tuning figures of merit upon continuous-wave excitation (in InP) or pulsed excitation (in 4H-SiC). Lifetime effects cause the tuning to saturate in InP, and carrier redistribution leads to rapid ( |
| Databáze: | OpenAIRE |
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