Kaleidoscope vortex lasers generated from astigmatic cavities with longitudinal-transverse coupling

Lü, Ting; Huang, Teng De; Chiou, Guan-Ying

doi:10.1364/oe.26.031464

Cited by 11 publications

(4 citation statements)

References 27 publications

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“…Other exotic cavities have been created to produce fractal‐like beams in the form of so‐called kaleidoscope modes, proposed as the modes of unstable cavities with truly 2D aperture symmetries rather than the conventional 2× 1D geometries (such as circular or rectangular apertures). Lasers based on various manifestations of this concept were subsequently suggested and demonstrated experimentally, including a cavity with crossed‐Porro prisms that rotate the beam after each round trip and an astigmatic cavity to produce HG beams which are transformed externally with a cylindrical lens . It all cases it is the superposition of multiple LG modes that gives rise to the exotic structure, including the multiple vortices evident in the field (see Figure ).…”

Section: Structured Light Lasersmentioning

confidence: 99%

See 1 more Smart Citation

Structured Light from Lasers

Forbes

2019

Laser & Photonics Reviews

216

126

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Structured light is derived from the ability to tailor light, usually referring to the spatial control of its amplitude, phase, and polarization. Although a venerable topic that dates back to the very first laser designs, structuring light at the source has seen an explosion in activity over the past decade, fuelled by a modern toolkit that exploits the versatility of diffractive structures, liquid crystals, metasurfaces/metamaterials, and exotic laser geometries, as well as a myriad of applications that range from imaging, microscopy, and laser material processing to optical communication. Here, the recent progress in creating and controlling structured light is reviewed, with particular emphasis on structuring light at the source: structured light lasers. The various design approaches, including pump shaping, cavity geometries, and the use of custom intracavity optical elements, implemented in a variety of lasers from microchip solutions to high‐power fibers are covered in a tutorial style. The history and latest developments in the field are reviewed, elucidating the various structured light patterns that have been created from lasers, including orbital angular momentum and vector states of light. Finally, the present challenges and limitations are highlighted, along with comments on likely future trends.

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Section: Structured Light Lasersmentioning

confidence: 99%

“…Superpositions of multiple Hermite–Gaussian beams from an astigmatic laser are passed through a cylindrical lens to form these exotic examples of structured light. Reproduced with permission . Copyright 2018, The Optical Society.…”

Section: Structured Light Lasersmentioning

confidence: 99%

Structured Light from Lasers

Forbes

2019

Laser & Photonics Reviews

216

126

View full text Add to dashboard Cite

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“…The other method is via the superposition of two or more special structured beams. For instances, the researchers have produced several connected OVAs via the superposition of the Ince–Gaussian (IG) beams, [ 30–32 ] Hermite–Gaussian beams, [ 33 ] 2D curve optical beams, [ 34 ] three or more plane waves, [ 35 ] Laguerre–Gaussianbeams, [ 36–39 ] Bessel beams, [ 40,41 ] perfect vortex beams, [ 42 ] elliptic perfect vortex beams, [ 43 ] and grafted OV beams. [ 21 ] The connected OVAs are verified to have potential applications in microparticle manipulation, particularly in ultracold atoms trapping.…”

Section: Introductionmentioning

confidence: 99%

Flower‐Shaped Optical Vortex Array

et al. 2021

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Herein, the generation of an optical vortex array dubbed the flower‐shaped optical vortex array (FOVA) is proposed and experimentally demonstrated using a single optical path interference method. FOVA is generated by the superposition of even and odd Ince–Gaussian (IG) beams, which have the same degree m and different order p. The number of optical vortices (OVs) in the FOVA is determined based on the values of order p and degree m of the even and odd IG beams. Furthermore, the positive sign of the OVs in the array can be transformed to negative by adding a specific initial phase difference. The OVs vanish and then recover as the initial phase difference increases from 0 to 2π. Moreover, the gradient force and energy flow distribution of the FOVA are studied. The OVA with flower‐shaped structure generated herein has potential significance in applications, such as microparticle manipulation and optical measurements.

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“…Despite various works devoted to the investigation of isolated optical vortex beams, the generation of optical vortex arrays or vortex lattices has attracted considerable attention for decades for photonic crystal fabrication, optical metrology, and optical manipulation [9][10][11]. Optical vortex arrays can, not only be directly generated in diode-pumped solid-state lasers with spherical cavity [12][13][14], but also be obtained by exploiting external optical devices, such as holographic grating [15,16], astigmatic mode converters [17][18][19], and spatial light modulators [20][21][22][23]. Since J. Masajada et al demonstrated a regular optical vortex array with crystal structures by a three wave interference [24], the multi-beam interference method has often been exploited to generate optical vortex arrays with crystal and quasicrystal structures [23,[25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Systematically Investigating the Structural Variety of Crystalline and Kaleidoscopic Vortex Lattices by Using Laser Beam Arrays

et al. 2021

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We theoretically demonstrate that a family of vortex-lattice structures can be flexibly generated using a multi-beam interference approach. Numerical calculation presents a variety of crystalline and kaleidoscopic patterns. Based on the numerical analysis, we experimentally realized these structure beams by combining an amplitude mask with multiple apertures and a spiral phase plate. The excellent agreement between the experimental and theoretical results not only validates the presented method, but also manifests the structure of vortex lattices.

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Kaleidoscope vortex lasers generated from astigmatic cavities with longitudinal-transverse coupling

Cited by 11 publications

References 27 publications

Structured Light from Lasers

Structured Light from Lasers

Flower‐Shaped Optical Vortex Array

Systematically Investigating the Structural Variety of Crystalline and Kaleidoscopic Vortex Lattices by Using Laser Beam Arrays

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