Magnetic on-off switching of a plasmonic laser
| Autor: | Francisco Freire-Fernández, Javier Cuerda, Konstantinos S. Daskalakis, Sreekanth Perumbilavil, Jani-Petri Martikainen, Kristian Arjas, Päivi Törmä, Sebastiaan van Dijken |
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| Přispěvatelé: | Department of Applied Physics, Quantum Dynamics, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2021 |
| Předmět: |
Physics::Optics
FOS: Physical sciences Physics - Applied Physics 02 engineering and technology Applied Physics (physics.app-ph) 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 0103 physical sciences 010306 general physics 0210 nano-technology Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.2104.14321 |
| Popis: | openaire: EC/H2020/948260 /EU//PLAS-OLED The nanoscale mode volumes of surface plasmon polaritons have enabled plasmonic lasers and condensates with ultrafast operation1–4. Most plasmonic lasers are based on noble metals, rendering the optical mode structure inert to external fields. Here we demonstrate active magnetic-field control over lasing in a periodic array of Co/Pt multilayer nanodots immersed in an IR-140 dye solution. We exploit the magnetic nature of the nanoparticles combined with mode tailoring to control the lasing action. Under circularly polarized excitation, angle-resolved photoluminescence measurements reveal a transition between the lasing action and non-lasing emission as the nanodot magnetization is reversed. Our results introduce magnetization as a means of externally controlling plasmonic nanolasers, complementary to modulation by excitation5, gain medium6,7 or substrate8. Further, the results show how the effects of magnetization on light that are inherently weak can be observed in the lasing regime, inspiring studies of topological photonics9–11. |
| Databáze: | OpenAIRE |
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