Superlight inverse Doppler effect
It has long been thought that the inverse Doppler frequency shift of light is impossible in homogeneous systems with a positive refractive index. Here we break this long-held tenet by predicting a previously unconsidered Doppler effect of light inside a radiation cone, the so-called Vavilov–Cherenko...
| Main Authors: | , , , , , , , |
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| Format: | Article |
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Springer Nature America, Inc
2020
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| Online Access: | https://hdl.handle.net/1721.1/124952 |
| _version_ | 1826212553541287936 |
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| author | Shi, Xihang Lin, Xiao Kaminer, Ido Gao, Fei Yang, Zhaoju Joannopoulos, John D. Soljacic, Marin Zhang, Baile |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Shi, Xihang Lin, Xiao Kaminer, Ido Gao, Fei Yang, Zhaoju Joannopoulos, John D. Soljacic, Marin Zhang, Baile |
| author_sort | Shi, Xihang |
| collection | MIT |
| description | It has long been thought that the inverse Doppler frequency shift of light is impossible in homogeneous systems with a positive refractive index. Here we break this long-held tenet by predicting a previously unconsidered Doppler effect of light inside a radiation cone, the so-called Vavilov–Cherenkov cone, under specific circumstances. It has been known from the classic work of Ginzburg and Frank that a superlight (that is, superluminal) normal Doppler effect appears inside the Vavilov–Cherenkov cone if the velocity of the source v is larger than the phase velocity of light v[subscript p]. By further developing their theory, we discover that an inverse Doppler frequency shift will arise if v > 2v[subscript p]. We denote this as the superlight inverse Doppler effect. Moreover, we show that the superlight inverse Doppler effect can be spatially separated from the other Doppler effects by using highly squeezed polaritons (such as graphene plasmons), which may facilitate the experimental observation. |
| first_indexed | 2024-09-23T15:25:01Z |
| format | Article |
| id | mit-1721.1/124952 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:25:01Z |
| publishDate | 2020 |
| publisher | Springer Nature America, Inc |
| record_format | dspace |
| spelling | mit-1721.1/1249522022-09-29T14:39:42Z Superlight inverse Doppler effect Shi, Xihang Lin, Xiao Kaminer, Ido Gao, Fei Yang, Zhaoju Joannopoulos, John D. Soljacic, Marin Zhang, Baile Massachusetts Institute of Technology. Department of Physics It has long been thought that the inverse Doppler frequency shift of light is impossible in homogeneous systems with a positive refractive index. Here we break this long-held tenet by predicting a previously unconsidered Doppler effect of light inside a radiation cone, the so-called Vavilov–Cherenkov cone, under specific circumstances. It has been known from the classic work of Ginzburg and Frank that a superlight (that is, superluminal) normal Doppler effect appears inside the Vavilov–Cherenkov cone if the velocity of the source v is larger than the phase velocity of light v[subscript p]. By further developing their theory, we discover that an inverse Doppler frequency shift will arise if v > 2v[subscript p]. We denote this as the superlight inverse Doppler effect. Moreover, we show that the superlight inverse Doppler effect can be spatially separated from the other Doppler effects by using highly squeezed polaritons (such as graphene plasmons), which may facilitate the experimental observation. Singapore. Ministry of Education (Grant MOE2015-T2-1-070) Singapore. Ministry of Education (Grant MOE2016-T3-1-006) Singapore. Ministry of Education (Grant Tier 1 RG174/16 (S) Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies (Contract W911NF-18-2-0048) Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies (Contract W911NF-13-D-0001) 2020-04-30T19:36:34Z 2020-04-30T19:36:34Z 2018-07 2017-11 2019-03-28T17:22:43Z Article http://purl.org/eprint/type/JournalArticle 1745-2473 1745-2481 https://hdl.handle.net/1721.1/124952 Shi, Xihang et al. “Superlight Inverse Doppler Effect.” Nature Physics 14, 10 (July 9, 2018): 1001–1005. © 2018 the Authors http://dx.doi.org/10.1038/S41567-018-0209-6 Nature Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Springer Nature America, Inc arXiv |
| spellingShingle | Shi, Xihang Lin, Xiao Kaminer, Ido Gao, Fei Yang, Zhaoju Joannopoulos, John D. Soljacic, Marin Zhang, Baile Superlight inverse Doppler effect |
| title | Superlight inverse Doppler effect |
| title_full | Superlight inverse Doppler effect |
| title_fullStr | Superlight inverse Doppler effect |
| title_full_unstemmed | Superlight inverse Doppler effect |
| title_short | Superlight inverse Doppler effect |
| title_sort | superlight inverse doppler effect |
| url | https://hdl.handle.net/1721.1/124952 |
| work_keys_str_mv | AT shixihang superlightinversedopplereffect AT linxiao superlightinversedopplereffect AT kaminerido superlightinversedopplereffect AT gaofei superlightinversedopplereffect AT yangzhaoju superlightinversedopplereffect AT joannopoulosjohnd superlightinversedopplereffect AT soljacicmarin superlightinversedopplereffect AT zhangbaile superlightinversedopplereffect |