Ultra-large actively tunable photonic band gaps via plasmon-analog of index enhancement
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2020
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| _version_ | 1866909226194960384 |
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| author | Yuce, Emre Demir, Ahmet Kemal Artvin, Zafer Sahin, Ramazan Bek, Alpan Tasgin, Mehmet Emre |
| author_facet | Yuce, Emre Demir, Ahmet Kemal Artvin, Zafer Sahin, Ramazan Bek, Alpan Tasgin, Mehmet Emre |
| contents | We present a novel method for active continuous-tuning of a band gap which has a great potential to revolutionize current photonic technologies. We study a periodic structure of x and y-aligned nanorod dimers. Refractive index of a y-polarized probe pulse can be continuously-tuned by the intensity of an x-polarized auxiliary (pump) pulse. Order of magnitude index-tuning can be achieved with a vanishing loss using the plasmon-analog of refractive index enhancement [Phys. Rev. B 100, 075427 (2019)]. Thus, a large band gap can be created from a non-existing gap via the auxiliary pulse. We also present a "proof of principle" demonstration of the phenomenon using numerical solutions of Maxwell equations. The new method, working for any crystal dimensions, can also be utilized as a linear photonic switch operating at tens of femtoseconds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2006_07132 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Ultra-large actively tunable photonic band gaps via plasmon-analog of index enhancement Yuce, Emre Demir, Ahmet Kemal Artvin, Zafer Sahin, Ramazan Bek, Alpan Tasgin, Mehmet Emre Optics Mesoscale and Nanoscale Physics Quantum Physics We present a novel method for active continuous-tuning of a band gap which has a great potential to revolutionize current photonic technologies. We study a periodic structure of x and y-aligned nanorod dimers. Refractive index of a y-polarized probe pulse can be continuously-tuned by the intensity of an x-polarized auxiliary (pump) pulse. Order of magnitude index-tuning can be achieved with a vanishing loss using the plasmon-analog of refractive index enhancement [Phys. Rev. B 100, 075427 (2019)]. Thus, a large band gap can be created from a non-existing gap via the auxiliary pulse. We also present a "proof of principle" demonstration of the phenomenon using numerical solutions of Maxwell equations. The new method, working for any crystal dimensions, can also be utilized as a linear photonic switch operating at tens of femtoseconds. |
| title | Ultra-large actively tunable photonic band gaps via plasmon-analog of index enhancement |
| topic | Optics Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2006.07132 |