Enhanced light outcoupling in microdisk lasers via Si spherical nanoantennas
| Autor: | M. M. Kulagina, Alex Krasnok, Yu. S. Polubavkina, N. V. Kryzhanovskaya, Andrey A. Lipovskii, V. V. Zhurikhina, Ivan Mukhin, Alexey E. Zhukov, M. V. Maximov, Yury M. Zadiranov, S A Scherbak, Andrey Bogdanov, Filipp E. Komissarenko, Eduard Moiseev |
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| Rok vydání: | 2018 |
| Předmět: |
Electromagnetic field
Materials science business.industry General Physics and Astronomy 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Laser 01 natural sciences Emission intensity Intensity (physics) law.invention Resonator Optical microscope Quantum dot law 0103 physical sciences Optoelectronics 010306 general physics 0210 nano-technology business |
| Zdroj: | Journal of Applied Physics. 124:163102 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.5046823 |
| Popis: | High-index dielectric (Si) nanoantennas providing outcoupling of light from InAs/Ga(Al)As quantum dot (QD) microdisk lasers have been designed. The spatial distribution of light emitted from optically pumped QD microdisk lasers with a single Si spherical nanoantenna placed on the top surface of the microdisk was studied experimentally by confocal optical microscopy. Dependences of the emission intensity on the size and position of the Si nanoantenna were investigated. It was found that the laser mode to be outcoupled can be selected by choosing the nanosphere position with respect to the mode electromagnetic field maximum. Optimization of the Si nanoantenna parameters resulted in a 23-fold increase of the emission intensity at the location of the Si nanoantenna (whereas the total intensity enhanced 4 times) compared to the emission intensity from the initial microdisk laser without significant deterioration of the resonator quality factor. |
| Databáze: | OpenAIRE |
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