Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium
The propagation of coherent light through an inhomogeneous medium generates a speckle pattern caused by the complex interference of randomly scattered waves. The speckle pattern does not resemble the incident beam profile. However, the spatially random pattern can be reshaped into a bright focal spo...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8468015/ |
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| author | Ziyang Chen Xiansheng Hu Xuanxuan Ji Jixiong Pu |
| author_facet | Ziyang Chen Xiansheng Hu Xuanxuan Ji Jixiong Pu |
| author_sort | Ziyang Chen |
| collection | DOAJ |
| description | The propagation of coherent light through an inhomogeneous medium generates a speckle pattern caused by the complex interference of randomly scattered waves. The speckle pattern does not resemble the incident beam profile. However, the spatially random pattern can be reshaped into a bright focal spot by wavefront shaping. And, in general, the focused intensity is of maximum just at the focal plane, and the focused intensity of the shaped focal beam decreases sharply with incremental distance from the focal plane. In this paper, we report the experimental generation of a needle beam as the laser beam passes through a scattering medium. The intensity and beam size of the needle beam remain nearly intact within the distance of 25 mm, which indicates that the focal pattern has a uniform property. |
| format | Article |
| id | doaj-art-39dc0c76bd4f43599f1aceaf864434cc |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-39dc0c76bd4f43599f1aceaf864434cc2025-08-20T03:15:48ZengIEEEIEEE Photonics Journal1943-06552018-01-011051810.1109/JPHOT.2018.28712168468015Needle Beam Generated by a Laser Beam Passing Through a Scattering MediumZiyang Chen0https://orcid.org/0000-0002-2467-8372Xiansheng Hu1Xuanxuan Ji2Jixiong Pu3https://orcid.org/0000-0001-8781-6683College of Information Science and Engineering, Fujian Provincial Key Laboratory of Light Propagation and Transformation, Huaqiao University, Xiamen, ChinaCollege of Information Science and Engineering, Fujian Provincial Key Laboratory of Light Propagation and Transformation, Huaqiao University, Xiamen, ChinaCollege of Information Science and Engineering, Fujian Provincial Key Laboratory of Light Propagation and Transformation, Huaqiao University, Xiamen, ChinaCollege of Information Science and Engineering, Fujian Provincial Key Laboratory of Light Propagation and Transformation, Huaqiao University, Xiamen, ChinaThe propagation of coherent light through an inhomogeneous medium generates a speckle pattern caused by the complex interference of randomly scattered waves. The speckle pattern does not resemble the incident beam profile. However, the spatially random pattern can be reshaped into a bright focal spot by wavefront shaping. And, in general, the focused intensity is of maximum just at the focal plane, and the focused intensity of the shaped focal beam decreases sharply with incremental distance from the focal plane. In this paper, we report the experimental generation of a needle beam as the laser beam passes through a scattering medium. The intensity and beam size of the needle beam remain nearly intact within the distance of 25 mm, which indicates that the focal pattern has a uniform property.https://ieeexplore.ieee.org/document/8468015/Speckleoptical field modulation |
| spellingShingle | Ziyang Chen Xiansheng Hu Xuanxuan Ji Jixiong Pu Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium IEEE Photonics Journal Speckle optical field modulation |
| title | Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium |
| title_full | Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium |
| title_fullStr | Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium |
| title_full_unstemmed | Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium |
| title_short | Needle Beam Generated by a Laser Beam Passing Through a Scattering Medium |
| title_sort | needle beam generated by a laser beam passing through a scattering medium |
| topic | Speckle optical field modulation |
| url | https://ieeexplore.ieee.org/document/8468015/ |
| work_keys_str_mv | AT ziyangchen needlebeamgeneratedbyalaserbeampassingthroughascatteringmedium AT xianshenghu needlebeamgeneratedbyalaserbeampassingthroughascatteringmedium AT xuanxuanji needlebeamgeneratedbyalaserbeampassingthroughascatteringmedium AT jixiongpu needlebeamgeneratedbyalaserbeampassingthroughascatteringmedium |