STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM
In this work, we study the generation of a negative refractive index based on electromagnetically induced transparency (EIT) in a Rb four-level N-type atomic gas medium. We derive analytic expressions for the relative permittivity and relative permeability of the medium according to the parameters o...
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| Format: | Article |
| Language: | English |
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Dalat University
2022-10-01
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| Series: | Tạp chí Khoa học Đại học Đà Lạt |
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| Online Access: | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1028 |
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| author | Huy Bang Nguyen Nguyen Mai Anh Le Thi Minh Phuong Le Hai Quang Ho Van Doai Le |
| author_facet | Huy Bang Nguyen Nguyen Mai Anh Le Thi Minh Phuong Le Hai Quang Ho Van Doai Le |
| author_sort | Huy Bang Nguyen |
| collection | DOAJ |
| description | In this work, we study the generation of a negative refractive index based on electromagnetically induced transparency (EIT) in a Rb four-level N-type atomic gas medium. We derive analytic expressions for the relative permittivity and relative permeability of the medium according to the parameters of the probe, pump, and signal laser fields. We then investigate the variation of the real parts of the relative permittivity and relative permeability with respect to the intensity and frequency of the pump and signal laser fields. In the presence of the pump laser beam, the medium becomes transparent to the probe laser beam even in the resonant region. At the same time, the real parts of the relative permittivity and relative permeability are simultaneously negative (i.e., the medium exhibits a negative refractive index) in the EIT spectral domain. In the presence of the signal laser beam, the EIT effect occurs over two different frequency domains of the probe beam, so a negative refractive index is also generated in these two frequency domains. The investigation of the real parts of the relative permittivity and relative permeability with intensity and frequency of the pump and signal laser fields allowed us to find the laser parameters for the appearance of the negative refractive index, which can be useful for experimental observations. |
| format | Article |
| id | doaj-art-385f334d9ceb4303b3f0f47bab1b4672 |
| institution | Kabale University |
| issn | 0866-787X |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Dalat University |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Đà Lạt |
| spelling | doaj-art-385f334d9ceb4303b3f0f47bab1b46722025-02-03T03:29:35ZengDalat UniversityTạp chí Khoa học Đại học Đà Lạt0866-787X2022-10-01455810.37569/DalatUniversity.13.1.1028(2023)1083STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUMHuy Bang Nguyen0Nguyen Mai Anh Le1Thi Minh Phuong Le2Hai Quang Ho3Van Doai Le4Vinh UniversityNong Lam UniversitySaigon UniversityVinh UniversityVinh UniversityIn this work, we study the generation of a negative refractive index based on electromagnetically induced transparency (EIT) in a Rb four-level N-type atomic gas medium. We derive analytic expressions for the relative permittivity and relative permeability of the medium according to the parameters of the probe, pump, and signal laser fields. We then investigate the variation of the real parts of the relative permittivity and relative permeability with respect to the intensity and frequency of the pump and signal laser fields. In the presence of the pump laser beam, the medium becomes transparent to the probe laser beam even in the resonant region. At the same time, the real parts of the relative permittivity and relative permeability are simultaneously negative (i.e., the medium exhibits a negative refractive index) in the EIT spectral domain. In the presence of the signal laser beam, the EIT effect occurs over two different frequency domains of the probe beam, so a negative refractive index is also generated in these two frequency domains. The investigation of the real parts of the relative permittivity and relative permeability with intensity and frequency of the pump and signal laser fields allowed us to find the laser parameters for the appearance of the negative refractive index, which can be useful for experimental observations.https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1028electromagnetically induced transparencyfour-level n-type atomic systemnegative refractive index. |
| spellingShingle | Huy Bang Nguyen Nguyen Mai Anh Le Thi Minh Phuong Le Hai Quang Ho Van Doai Le STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM Tạp chí Khoa học Đại học Đà Lạt electromagnetically induced transparency four-level n-type atomic system negative refractive index. |
| title | STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM |
| title_full | STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM |
| title_fullStr | STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM |
| title_full_unstemmed | STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM |
| title_short | STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM |
| title_sort | study of negative refractive index in rb four level n type atomic gas medium |
| topic | electromagnetically induced transparency four-level n-type atomic system negative refractive index. |
| url | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1028 |
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