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Generation of shaping nondiffracting structured caustic beams on the basis of stationary phase principle 被引量:1
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作者 陈日坚 施逸乐 +2 位作者 弓宁 刘叶枫 任志君 《Chinese Optics Letters》 SCIE EI CAS CSCD 2023年第10期99-105,共7页
On the basis of the stationary phase principle,we construct a family of shaping nondiffracting structured caustic beams with the desired morphology.First,the analytical formula of a nondiffracting astroid caustic is d... On the basis of the stationary phase principle,we construct a family of shaping nondiffracting structured caustic beams with the desired morphology.First,the analytical formula of a nondiffracting astroid caustic is derived theoretically using the stationary phase method.Then,several types of typical desired caustics with different shapes are numerically simulated using the obtained formulas.Hence,the key optical structure and propagation characteristics of nondiffracting caustic beams are investigated.Finally,a designed phase plate and an axicon are used to generate the target light field.The experimental results confirm the theoretical prediction.Compared with the classical method,the introduced method for generating nondiffracting caustic beams is high in light-energy utilization;hence,it is expected to be applied conveniently to scientific experiments. 展开更多
关键词 nondiffracting structured caustic beams phase plate stationary phase method AXICON
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Ultracompact phase plate fabricated by femtosecond laser two-photon polymerization for generation of Mathieu–Gauss beams
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作者 Jue Wang Chengkun Cai +3 位作者 Tianhao Fu Kangrui Wang Yize Liang Jian Wang 《Advanced Photonics Nexus》 2023年第1期100-108,共9页
The Mathieu beam is a typical nondiffracting beam characterized by its propagation invariance and self-reconstruction.These extraordinary properties have given rise to potentialities for applications such as optical c... The Mathieu beam is a typical nondiffracting beam characterized by its propagation invariance and self-reconstruction.These extraordinary properties have given rise to potentialities for applications such as optical communications,optical trapping,and material processing.However,the experimental generation of Mathieu–Gauss beams possessing high quality and compactness is still challenging.In this work,even and helical Mathieu phase plates with different orders m and ellipticity parameters q are fabricated by femtosecond laser two-photon polymerization.The experimentally generated nondiffracting beams are propagationinvariant in several hundred millimeters,which agree with numerical simulations.This work may promote the miniaturization of the application of nondiffracting beams in micronanooptics. 展开更多
关键词 femtosecond laser micromachining two-photon polymerization nondiffracting beams Mathieu–Gauss beams
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Specially shaped Bessel-like self-accelerating beams along predesigned trajectories 被引量:4
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作者 Juanying Zhao I.D.Chremmos +5 位作者 Ze Zhang Yi Hu Daohong Song Peng Zhang N.K.Efremidis Zhigang Chen 《Science Bulletin》 SCIE EI CAS CSCD 2015年第13期1157-1169,共13页
Over the past several years, spatially shaped self-accelerating beams along different trajectories have been studied extensively. Due to their useful properties such as resistance to diffraction, self-healing, and sel... Over the past several years, spatially shaped self-accelerating beams along different trajectories have been studied extensively. Due to their useful properties such as resistance to diffraction, self-healing, and selfbending even in free space, these beams have attracted great attention with many proposed applications. Interestingly, some of these beams could be designed with controllable spatial profiles and thus propagate along various desired trajectories such as parabolic, snake-like, hyperbolic, hyperbolic secant, three-dimensional spiraling, and even self-propelling trajectories. Experimentally, suchbeams are realized typically by using a spatial light modulator so as to imprint a desired phase distribution on a Gaussian-like input wave front propagating under paraxial or nonparaxial conditions. In this paper, we provide a brief overview of our recent work on specially shaped self-accelerating beams, including Bessel-like, breathing Bessellike, and vortex Bessel-like beams. In addition, we propose and demonstrate a new type of dynamical Bessel-like beams that can exhibit not only self-accelerating but also self-propelling during propagation. Both theoretical and experimental results are presented along with a brief discussion of potential applications. 展开更多
关键词 Airy beams . Bessel beams . Vortexbeams - nondiffracting beams . Self-acceleratingSelf-healing
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