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Conical ring beam achieved via degenerated optical parametric generation in tightly focused quasi-phase matching conditions
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Paper Abstract

Ring or conical light beams show great potential in many applications. We report on achievement of multi-ring-shaped conical beams through degenerated optical parametric generation (OPG) with tightly focused Gaussian pump beam in periodic polarized lithium niobate (PPLN) crystal. We observed continuous beam spatial pattern variation from multi to single ring and normal non-hollow beams by crystal temperature tuning. We attributed the experimental results to the effective polarized period changing under tightly focusing. This unique feature would exist in any quasi-phase matching processes and may find applications in optical trapping, manipulation, and even quantum field.

Paper Details

Date Published: 29 March 2019
PDF: 5 pages
Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110460D (29 March 2019); doi: 10.1117/12.2524397
Show Author Affiliations
Wei Zhao, National Univ. of Defense Technology (China)
State Key Lab. of Pulsed Power Lab Technology (China)
Chuan Guo, National Univ. of Defense Technology (China)
Lingwei Zhao, National Univ. of Defense Technology (China)
Lei Liu, National Univ. of Defense Technology (China)
Institute of Optics and Electronics (China)
Key Lab. of Optical Engineering (China)
Hongyan Wang, National Univ. of Defense Technology (China)
State Key Lab. of Pulsed Power Lab Technology (China)
Xiaojun Xu, National Univ. of Defense Technology (China)
State Key Lab. of Pulsed Power Lab Technology (China)


Published in SPIE Proceedings Vol. 11046:
Fifth International Symposium on Laser Interaction with Matter
YiJun Zhao, Editor(s)

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