Travelling wave amplification in stationary gratings
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866916122129858560 |
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| author | Horsley, S. A. R. Pendry, J. B. |
| author_facet | Horsley, S. A. R. Pendry, J. B. |
| contents | We show that a grating amplitude stationary in space but oscillating in time can be accurately modelled as a set of independent gratings travelling in opposite directions, interacting almost exclusively with waves travelling in the same direction. This structure reproduces the key features of travelling gratings: amplification of a wave at points where the local wave speed equals the grating velocity. The same field compression and photon production is evident when even a single Fourier component of the grating profile has a velocity that matches the local wave speed. We speculate that these stationary but oscillating gratings may prove easier to realise experimentally than travelling gratings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_07486 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Travelling wave amplification in stationary gratings Horsley, S. A. R. Pendry, J. B. Optics Quantum Physics We show that a grating amplitude stationary in space but oscillating in time can be accurately modelled as a set of independent gratings travelling in opposite directions, interacting almost exclusively with waves travelling in the same direction. This structure reproduces the key features of travelling gratings: amplification of a wave at points where the local wave speed equals the grating velocity. The same field compression and photon production is evident when even a single Fourier component of the grating profile has a velocity that matches the local wave speed. We speculate that these stationary but oscillating gratings may prove easier to realise experimentally than travelling gratings. |
| title | Travelling wave amplification in stationary gratings |
| topic | Optics Quantum Physics |
| url | https://arxiv.org/abs/2402.07486 |