Twisted electromagnetic sinc Schell-model beam and its transmission in a turbulent atmosphere

• Autorzy: Zhang Changyou , Fu Wenyu

Identyfikatory

DOI

10.37190/oa240102

• Języki publikacji: EN

Abstrakty

EN

We present the twisted electromagnetic sinc-correlation Schell-model (EM TSSM) beam as an extension of the cylindrical sinc Schell-model beam and analyze the necessary source parameter conditions to generate a physically viable beam. Furthermore, we thoroughly investigate the propagation properties of the EM TSSM beam in atmospheric turbulence using the extended Huygens–Fresnel integral, explicitly focusing on spectral intensity, degree of polarization (DOP), and degree of coherence (DOC). It shows that the twisted phase has a noticeable impact on the intensity profiles of these beams, causing them to exhibit rotation and self-splitting while still maintaining their shape in free space. Moreover, during propagation through a turbulent atmosphere, it exhibits self-combining properties over a long range and recovers the plat-topped distribution. Compared with the sinc Schell-model beam without the twisted phase, the DOP distribution of such a beam can rotate around its distribution center. As these beams propagate through turbulent atmospheres, they can self-heal their DOP distribution within specific ranges affected by atmospheric turbulence. A twist factor causes non-unidirectional rotation of the DOC distribution in free space. The DOC gradually transforms from multi-strip profiles into a Gaussian-like distribution. Furthermore, the beam parameters play a crucial role in shaping the DOC. The results will be useful in optical trapping and optical communication.

Słowa kluczowe

EN

twisted electromagnetic sinc-correlation Schell-model beam; sinc Schell-model beam; beam propagation; atmospheric turbulence

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2024
• Tom: Vol. 54, nr 1
• Strony: 15--29
• Opis fizyczny: Bibliogr. 31 poz., rys.

Twórcy

autor

Zhang Changyou

• College of Artificial Intelligence, Jiang-Xi University of Engineering Xinyu, 33800, Jiangxi, China

autor

Fu Wenyu

• College of Artificial Intelligence, Jiang-Xi University of Engineering Xinyu, 33800, Jiangxi, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).