Efficient diffraction control using a tunable active-Raman gain medium
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arXiv
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929316613324800 |
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| author | Sharma, Sandeep |
| author_facet | Sharma, Sandeep |
| contents | We present a new scheme to create all-optical tunable and lossless waveguide using a controllable coherent Raman process in an atomic rubidium vapor in N-type configuration. We employ a Gaussian Raman field and a Laguerre-Gaussian control field to imprint a high-contrast tunable waveguide-like feature inside the atomic medium. We numerically demonstrate that such a waveguide is able to guide arbitrary modes of a weak probe beam to several Rayleigh length without diffraction and absorption. Our results on all-optical waveguide based scheme may have potential application in lossless image processing, high contrast biomedical imaging and image metrology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_10280 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Efficient diffraction control using a tunable active-Raman gain medium Sharma, Sandeep Optics Quantum Physics We present a new scheme to create all-optical tunable and lossless waveguide using a controllable coherent Raman process in an atomic rubidium vapor in N-type configuration. We employ a Gaussian Raman field and a Laguerre-Gaussian control field to imprint a high-contrast tunable waveguide-like feature inside the atomic medium. We numerically demonstrate that such a waveguide is able to guide arbitrary modes of a weak probe beam to several Rayleigh length without diffraction and absorption. Our results on all-optical waveguide based scheme may have potential application in lossless image processing, high contrast biomedical imaging and image metrology. |
| title | Efficient diffraction control using a tunable active-Raman gain medium |
| topic | Optics Quantum Physics |
| url | https://arxiv.org/abs/2404.10280 |