Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant Path
The equivalent B-integral phase screen (EBPS) method of numerical simulation is proposed to study the propagation of a high-power laser beam in the atmosphere along a slant path, and the computational accuracy and efficiency of the EBPS method are confirmed. It is shown that a decrease of the self-f...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10049534/ |
| _version_ | 1827997253612077056 |
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| author | Liyun Pu Xiaoqing Li Xiaoling Ji |
| author_facet | Liyun Pu Xiaoqing Li Xiaoling Ji |
| author_sort | Liyun Pu |
| collection | DOAJ |
| description | The equivalent B-integral phase screen (EBPS) method of numerical simulation is proposed to study the propagation of a high-power laser beam in the atmosphere along a slant path, and the computational accuracy and efficiency of the EBPS method are confirmed. It is shown that a decrease of the self-focusing caused by the atmosphere refraction effect. However, the refraction correction for the elevation angle is hardly affected by the self-focusing effect. On the other hand, the analytical expressions of the B integral and the optimal initial beam power of a high-power laser beam propagating in the atmosphere along a slant path are derived. It is found that the optimal beam power and the target maximum intensity decrease as the apparent elevation angle decreases, while the optimal beam power decreases but the target maximum intensity increases as the wavelength decreases. A method to optimize the beam quality on the target is presented. |
| first_indexed | 2024-04-10T05:25:31Z |
| format | Article |
| id | doaj.art-2741ea15bfc24e4a8d2ceef2bf2ef2ab |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-10T05:25:31Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-2741ea15bfc24e4a8d2ceef2bf2ef2ab2023-03-08T00:00:06ZengIEEEIEEE Photonics Journal1943-06552023-01-011521610.1109/JPHOT.2023.324719710049534Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant PathLiyun Pu0Xiaoqing Li1Xiaoling Ji2https://orcid.org/0000-0001-6890-7125School of Civil Engineering, Southwest Jiaotong University, Chengdu, ChinaDepartment of Physics, Sichuan Normal University, Chengdu, ChinaDepartment of Physics, Sichuan Normal University, Chengdu, ChinaThe equivalent B-integral phase screen (EBPS) method of numerical simulation is proposed to study the propagation of a high-power laser beam in the atmosphere along a slant path, and the computational accuracy and efficiency of the EBPS method are confirmed. It is shown that a decrease of the self-focusing caused by the atmosphere refraction effect. However, the refraction correction for the elevation angle is hardly affected by the self-focusing effect. On the other hand, the analytical expressions of the B integral and the optimal initial beam power of a high-power laser beam propagating in the atmosphere along a slant path are derived. It is found that the optimal beam power and the target maximum intensity decrease as the apparent elevation angle decreases, while the optimal beam power decreases but the target maximum intensity increases as the wavelength decreases. A method to optimize the beam quality on the target is presented.https://ieeexplore.ieee.org/document/10049534/Atmospheric propagationslant pathnonlinear self-focusingequivalent B-integral phase screen (EBPS) method |
| spellingShingle | Liyun Pu Xiaoqing Li Xiaoling Ji Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant Path IEEE Photonics Journal Atmospheric propagation slant path nonlinear self-focusing equivalent B-integral phase screen (EBPS) method |
| title | Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant Path |
| title_full | Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant Path |
| title_fullStr | Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant Path |
| title_full_unstemmed | Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant Path |
| title_short | Effect of Self-Focusing on Propagation of a Laser Beam in the Atmosphere Along a Slant Path |
| title_sort | effect of self focusing on propagation of a laser beam in the atmosphere along a slant path |
| topic | Atmospheric propagation slant path nonlinear self-focusing equivalent B-integral phase screen (EBPS) method |
| url | https://ieeexplore.ieee.org/document/10049534/ |
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