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Appl. Sci. 2019, 9(3), 550; https://doi.org/10.3390/app9030550

Generation of an Adjustable Optical Cage through Focusing an Apertured Bessel-Gaussian Correlated Schell-Model Beam

1
School of Optoelectronic Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665, China
2
Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
3
School of Physics and Material Science, Anhui University, Hefei 230039, China
4
School of Physical Science and Technology, Soochow University, Suzhou 215006, China
*
Authors to whom correspondence should be addressed.
Received: 11 January 2019 / Revised: 31 January 2019 / Accepted: 1 February 2019 / Published: 7 February 2019
(This article belongs to the Special Issue Recent Advances in Statistical Optics and Plasmonics)
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Abstract

An adjustable optical cage generated by focusing a partially coherent beam with nonconventional correlation function named the Bessel–Gaussian correlated Schell-model (BGCSM) beam is investigated in detail. With the help of the generalized Huygens–Fresnel integral and complex Gaussian function expansion, the analytical formula of the BGCSM beam passing through an apertured ABCD optical system was derived. Our numerical results show that the generated optical cage can be moderately adjusted by the aperture radius, the spatial coherence width, and the parameter β of the BGCSM beam. Furthermore, the effect of these parameters on the effective beam size and the spectral degree of coherence were also analyzed. The optical cage with adjustable size can be applied for particle trapping and material thermal processing. View Full-Text
Keywords: partially coherent beam; correlation function; focusing; optical cage partially coherent beam; correlation function; focusing; optical cage
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Guo, L.; Chen, L.; Lin, R.; Zhang, M.; Gao, Y.; Cai, Y. Generation of an Adjustable Optical Cage through Focusing an Apertured Bessel-Gaussian Correlated Schell-Model Beam. Appl. Sci. 2019, 9, 550.

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