Interplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor medium
We investigate both experimentally and theoretically the cascade electromagnetically induced transparency (EIT) in $5S_{1/2}-5P_{3/2}-5D_{5/2}$ configuration in ^87 Rb atomic vapor medium in the presence of vortex coupling Laguerre Gaussian (LG) light. We demonstrated Doppler free double resonance E...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/acb0ef |
| _version_ | 1827871458879078400 |
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| author | Dixith Manchaiah Rohit Kumar Raghavan K Easwaran |
| author_facet | Dixith Manchaiah Rohit Kumar Raghavan K Easwaran |
| author_sort | Dixith Manchaiah |
| collection | DOAJ |
| description | We investigate both experimentally and theoretically the cascade electromagnetically induced transparency (EIT) in $5S_{1/2}-5P_{3/2}-5D_{5/2}$ configuration in ^87 Rb atomic vapor medium in the presence of vortex coupling Laguerre Gaussian (LG) light. We demonstrated Doppler free double resonance EIT structure in cascade configuration and observed transmission spectra for $\vert H\rangle-\vert H\rangle$ and $\sigma^+-\sigma^+$ polarized probe and coupling lights. We demonstrate that the double resonance structure can be identified by two photon transition probabilities and it is found to be $F^{^{\prime\prime}} = 2$ and $F^{^{\prime\prime}} = 3$ . By considering coupling LG light, several polarization combinations are taken into account, and their effects on amplifying and diminishing the EIT resonances are demonstrated experimentally. In order to understand the polarization effects of vortex coupling light on EIT spectrum in a degenerate multilevel atomic system, a theoretical model is developed by considering a simplified double hut level structure. Semi-classical density matrix analysis is used to understand the dynamics and also to establish the enhancement and reduction of EIT peak height with coupling light polarizations. The impact of two photon transition probabilities, polarization combinations and relative orientations of probe and coupling lights in degenerate multilevel atomic systems leads to modification of EIT resonances significantly. We establish quantitative agreement between our theory and experimental results. |
| first_indexed | 2024-03-12T16:09:31Z |
| format | Article |
| id | doaj.art-6e359d210f6a4ecb920010c379cbb787 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:09:31Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-6e359d210f6a4ecb920010c379cbb7872023-08-09T14:11:36ZengIOP PublishingNew Journal of Physics1367-26302023-01-0125101301310.1088/1367-2630/acb0efInterplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor mediumDixith Manchaiah0https://orcid.org/0000-0002-4534-6182Rohit Kumar1Raghavan K Easwaran2https://orcid.org/0000-0002-1006-7060Department of Physics, Indian Institute of Technology Patna , Patna, Bihar 801103, IndiaDepartment of Physics, Indian Institute of Technology Patna , Patna, Bihar 801103, IndiaDepartment of Physics, Indian Institute of Technology Patna , Patna, Bihar 801103, IndiaWe investigate both experimentally and theoretically the cascade electromagnetically induced transparency (EIT) in $5S_{1/2}-5P_{3/2}-5D_{5/2}$ configuration in ^87 Rb atomic vapor medium in the presence of vortex coupling Laguerre Gaussian (LG) light. We demonstrated Doppler free double resonance EIT structure in cascade configuration and observed transmission spectra for $\vert H\rangle-\vert H\rangle$ and $\sigma^+-\sigma^+$ polarized probe and coupling lights. We demonstrate that the double resonance structure can be identified by two photon transition probabilities and it is found to be $F^{^{\prime\prime}} = 2$ and $F^{^{\prime\prime}} = 3$ . By considering coupling LG light, several polarization combinations are taken into account, and their effects on amplifying and diminishing the EIT resonances are demonstrated experimentally. In order to understand the polarization effects of vortex coupling light on EIT spectrum in a degenerate multilevel atomic system, a theoretical model is developed by considering a simplified double hut level structure. Semi-classical density matrix analysis is used to understand the dynamics and also to establish the enhancement and reduction of EIT peak height with coupling light polarizations. The impact of two photon transition probabilities, polarization combinations and relative orientations of probe and coupling lights in degenerate multilevel atomic systems leads to modification of EIT resonances significantly. We establish quantitative agreement between our theory and experimental results.https://doi.org/10.1088/1367-2630/acb0efElectromagnetically induced transparencyvortex beampolarizationRb-87 |
| spellingShingle | Dixith Manchaiah Rohit Kumar Raghavan K Easwaran Interplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor medium New Journal of Physics Electromagnetically induced transparency vortex beam polarization Rb-87 |
| title | Interplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor medium |
| title_full | Interplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor medium |
| title_fullStr | Interplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor medium |
| title_full_unstemmed | Interplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor medium |
| title_short | Interplay of polarizations in a cascade EIT system in the presence of vortex coupling light in 87Rb atomic vapor medium |
| title_sort | interplay of polarizations in a cascade eit system in the presence of vortex coupling light in 87rb atomic vapor medium |
| topic | Electromagnetically induced transparency vortex beam polarization Rb-87 |
| url | https://doi.org/10.1088/1367-2630/acb0ef |
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