Chinese Optics Letters, Volume. 21, Issue 10, 102601(2023)
Generation of shaping nondiffracting structured caustic beams on the basis of stationary phase principle
Figures & Tables(7)
Fig. 1. Shaping nondiffracting structured caustic beams. (a) Astroid; (b) deltoid; (c) cardioid; (d) pentagram caustics. (a1)–(d1) Caustic lines; (a2)–(d2) phase distributions; (a3)–(d3) ray pictures; (a4)–(d4) simulated transverse intensities of the astroid, deltoid, cardioid, and pentagram caustics, respectively.
Fig. 2. Theoretical simulations of astroid caustic with different q. (a) q = 0; (b) q = 5; (c) q = 10; (d) q = 15.
Fig. 4. Experimental recorded graphs of nondiffracting caustic beams with the same parameters as that in Fig.
Fig. 5. Experimental recorded graphs of astroid caustic beams with the same parameters as that in Fig.
Fig. 6. Astroid caustic beams at different propagation distances after the axicon. (a1)–(d1) Simulation intensity graphs; (a2)–(d2) experimental recorded intensity graphs. Propagation distances: (a1), (a2) z = 50 cm; (b1), (b2) z = 60 cm; (c1), (c2) z = 70 cm; (d1), (d2) z = 80 cm.
Table 1. Parametric Expressions for Different Curves
View tableView in ArticleTable 1. Parametric Expressions for Different Curves
Type of Curve x(φ) y(φ) Deltoid 1/k⊥ [−9q cos(3φ)cos(φ)−3q sin(3φ)sin(φ)] 1/k⊥ [−9q cos(3φ)sin(φ)+3q sin(3φ)cos(φ)] Cardioid 1/k⊥ [2q cos(φ)−q cos(2φ)] 1/k⊥ [2q sin(φ)−q sin(2φ)] Pentagram 1/k⊥ [−25 q sin (5φ) cos (φ) + 5q cos ( 5 φ) sin (φ)] 1/k⊥ [−25q sin (5φ) sin (φ)−5 q cos (5φ) cos (φ)]
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Rijian Chen, Yile Shi, Ning Gong, Yefeng Liu, Zhijun Ren. Generation of shaping nondiffracting structured caustic beams on the basis of stationary phase principle[J]. Chinese Optics Letters, 2023, 21(10): 102601
Paper Information
Category: Physical Optics
Received: Mar. 24, 2023
Accepted: May. 11, 2023
Published Online: Sep. 4, 2023
The Author Email: Zhijun Ren (renzhijun@zjnu.cn)
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