High Circular Polarized Nanolaser with Chiral Gammadion Metal Cavity
| Autor: | Shu-Wei Chang, Ming Sheng Lai, Hsiang Ting Lin, Min-Hsiung Shih, Pi-Ju Cheng, Chiao Yun Chang, Cheng Li Yu, Yu Hao Hsiao, Hao-Chung Kuo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Circular dichroism
Materials science Photon Magnetism lcsh:Medicine Physics::Optics 02 engineering and technology medicine.disease_cause 01 natural sciences Article law.invention Optical pumping law 0103 physical sciences medicine Lasers LEDs and light sources 010306 general physics lcsh:Science Nanophotonics and plasmonics Multidisciplinary business.industry Nanolaser lcsh:R 021001 nanoscience & nanotechnology Laser Optoelectronics lcsh:Q 0210 nano-technology business Lasing threshold Ultraviolet |
| Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-7 (2020) |
| ISSN: | 2045-2322 |
| Popis: | We demonstrate a circularly polarized laser with the metal-gallium-nitride gammadion nanocavities. The ultraviolet lasing signal was observed with the high circular dichroism at room temperature under pulsed optical pump conditions. Without external magnetism which breaks the time-reversal symmetry to favor optical transitions of a chosen handedness, the coherent outputs of these chiral nanolasers show a dissymmetry factor as high as 1.1. The small footprint of these lasers are advantageous for applications related to circularly polarized photons in future integrated systems, in contrast to the bulky setup of linearly-polarized lasers and quarter-wave plates. |
| Databáze: | OpenAIRE |
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