Continuously-tunable Cherenkov-radiation-based detectors via plasmon index control
| Autor: | You-Lin Chuang, Mehmet Günay, Mehmet Emre Tasgin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
QC1-999 FOS: Physical sciences Physics::Optics Radiation angle 02 engineering and technology plasmon index enhancement 01 natural sciences Optics Distortion 0103 physical sciences cherenkov radiation Electrical and Electronic Engineering 010306 general physics Absorption (electromagnetic radiation) Cherenkov radiation Plasmon Quantum Physics business.industry Physics Detector 021001 nanoscience & nanotechnology particle detectors Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Photonics Quantum Physics (quant-ph) 0210 nano-technology business Refractive index Optics (physics.optics) Physics - Optics Biotechnology |
| Zdroj: | Nanophotonics, Vol 9, Iss 6, Pp 1479-1489 (2020) |
| ISSN: | 2192-8614 2192-8606 |
| DOI: | 10.1515/nanoph-2020-0081 |
| Popis: | A recent study [PRB 100, 075427 (2019)], finally, demonstrated plasmon-analog of refractive index enhancement in metal nanostructures, which has already been studied in atomic clouds for several decades. Here, we simply utilize this phenomenon for achieving continuously-tunable enhanced Cherenkov radiation in metal nanostructures. Beyond enabling Cherenkov radiation from slow-moving particles, or increasing its intensity, the phenomenon can be used in continuous-tuning the velocity cutoff of particles contributing to the Cherenkov radiation. More influentially, this allows a continuously-tunable analysis of the contributing particles as if the data is collected from many different detectors, which enables data correction. The phenomenon can also be integrated into lattice metal nanostructures, for continuous medium tuning, where a high density of photonic states is present and the threshold for the Cherenkov radiation can even be lifted. Additionally, vanishing absorption can heal radiation angle distortion effects caused by the metallic absorption. 10 pages, 7 figures |
| Databáze: | OpenAIRE |
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