Bottle beam generation from a frequency-doubled Nd:YVO4 laser

Tung, J. C.; Y., Y.; Miyamoto, Katsuhiko; Chen, Yung-Fu; Omatsu, Takashige

doi:10.1038/s41598-018-34783-z

Cited by 10 publications

(7 citation statements)

References 28 publications

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“…LG 00 + LG 50 were generated in Nd:YVO 4 lasers with different degenerate cavities with r/s = 1/3, 1/4, and 1/5 [22,23]. Similar results were obtained in [24] for a hemispherical cavity Nd:YVO 4 laser with intracavity frequency doubling. Once a superposition of the eigenmodes has been generated in a laser, it can be delivered to a sample via ABCD optical system, taking into account the transformation of the Gouy phases of the eigenmodes and the complex radius of curvature of the eigenmode family.…”

Section: Introductionsupporting

confidence: 72%

Generation of an optical beam with two-dimensional dark focus in a fractionally-degenerate cavity

Gorbunkov¹,

Kostryukov²,

Tunkin³

2020

Laser Phys.

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An optical beam with a dark region surrounded by light in two dimensions, formed as a coherent superposition of mainly two Hermite–Gaussian eigenmodes HG04 and HG08, has been generated in an axially end-pumped Nd:YAG laser with an astigmatic fractionally degenerate semiconfocal cavity with an intracavity obstacle (a needle). Being focused with a lens, the beam has a dark region on its axis, surrounded by high-intensity regions only in z- and y-directions while maintaining Gaussian behavior in the x direction. The influence of the number of HG0n eigenmodes and comparison of the beam with a geometric M-mode are studied numerically.

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Section: Introductionsupporting

confidence: 72%

Generation of an optical beam with two-dimensional dark focus in a fractionally-degenerate cavity

Gorbunkov¹,

Kostryukov²,

Tunkin³

2020

Laser Phys.

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“…The generation of 'bottle beams' has been demonstrated in both degenerate and frequency-doubled hemispherical cavities, in which Gaussian and higher-order transverse modes operate at the same frequency [46], [47]. The ultrahigh-Q self-Raman laser in this experiment also facilitates coherent coupling between Gaussian and several radial LG (ℓ = 0, p ≠ 0) modes leading to 'bottle beam' generation.…”

Section: Resultsmentioning

confidence: 85%

Watt-Level 1173 nm Laguerre-Gaussian Mode Generation From a Self-Raman Nd:GdVO₄ Laser

Sugahara

Lee

et al. 2023

J. Lightwave Technol.

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We demonstrate a high power (watt-level) self-Raman Nd:GdVO4 Laguerre-Gaussian (LG) mode laser by employing an off-axis needle-pumping geometry. The system selectively produces right-or left-handed LG modes by adjusting the off-axis displacement of the pump beam relative to the laser cavity. The maximum output power of the generated 1173 nm LG beam (corresponding to the first-Stokes emission of from the 882 cm -1 Raman shift) reaches 1.2 W for an absorbed pump power of 8.6 W. Furthermore, the system enables the generation of a wattlevel bottle beam, formed by the coherent superposition of Gaussian and radial LG modes.

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“…They observed that for an input composite vortex, the frequency-doubled beam was also composite (coherent superposition of the pure LG mode). Tung et al [109] also reported a frequency-doubled vortex beam in 2018, which they designated as the bottle beam. The experimental configuration is in Figure 3D.…”

Section: Shg/sfg/hhgmentioning

confidence: 99%

Recent Progress in Nonlinear Frequency Conversion of Optical Vortex Lasers

Liu

Duan

et al. 2022

Front. Phys.

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Optical vortices are optical fields that possess a helical phase and orbital angular momentum, which have found the application in micromanipulation, optical communication, orbital angular momentum entanglement, super-resolution imaging, metrology, etc. The urgent need for the wide spreading applications of vortex lasers is to increase the wavelength versatility. In this study, the nonlinear frequency conversion of vortex lasers with a focus on sum frequency generation stimulated Raman scattering, and optical parametric oscillators were meticulously reviewed. The characteristics of the topological charge transfer and output beam profiles of different frequency conversion were discussed. As the precise tuning of optical fields in both temporal and spatial domains shall be the trend of future studies, it is our hope that this review shall serve as a reference for future research. Combining these techniques with the streaming methods to produce optical vortices, i.e., annular pump, off-axis pump, reflection mirror with defect spots, spherical aberration, and birefringence, it is advisable to expand the wavelength and fill the wavelength gap in the ultraviolet, visible, and infrared bands.

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Bottle beam generation from a frequency-doubled Nd:YVO4 laser

Cited by 10 publications

References 28 publications

Generation of an optical beam with two-dimensional dark focus in a fractionally-degenerate cavity

Generation of an optical beam with two-dimensional dark focus in a fractionally-degenerate cavity

Watt-Level 1173 nm Laguerre-Gaussian Mode Generation From a Self-Raman Nd:GdVO₄ Laser

Recent Progress in Nonlinear Frequency Conversion of Optical Vortex Lasers

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Bottle beam generation from a frequency-doubled Nd:YVO4 laser

Cited by 10 publications

References 28 publications

Generation of an optical beam with two-dimensional dark focus in a fractionally-degenerate cavity

Generation of an optical beam with two-dimensional dark focus in a fractionally-degenerate cavity

Watt-Level 1173 nm Laguerre-Gaussian Mode Generation From a Self-Raman Nd:GdVO4 Laser

Recent Progress in Nonlinear Frequency Conversion of Optical Vortex Lasers

Contact Info

Product

Resources

About

Watt-Level 1173 nm Laguerre-Gaussian Mode Generation From a Self-Raman Nd:GdVO₄ Laser