A high repetition rate passively Q-switched microchip laser for controllable transverse laser modes

Dong, Jun; Bai, Shengchuang; Liu, Shenghui; Ueda, Ken–ichi; Kaminskii, Alexander A.

doi:10.1088/2040-8978/18/5/055205

Cited by 22 publications

(32 citation statements)

References 30 publications

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“…Such techniques are particularly well‐suited to microchip lasers where it is not possible to insert any amplitude or phase elements into the cavity due to the monolithic design. Using gain control approaches, many forms of structured light have been realized . In many of these examples, external structured light was used to enhance intracavity creation of structured light.…”

Section: Structured Light Lasersmentioning

confidence: 99%

Structured Light from Lasers

Forbes

2019

Laser & Photonics Reviews

213

121

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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%

Structured Light from Lasers

Forbes

2019

Laser & Photonics Reviews

213

121

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“…LG 0,8 +LG 0,8 +LG 0,1 * L G 0,13 +LG 0,5 +LG 0,0 LG 0,9 +LG 0,9 +LG 0,3 +LG 0,0 Figure 9. Examples of modes created from a microchip laser [60]. Image courtesy of Jun Dong.…”

Section: Integrated Solutionsunclassified

“…lasers [50,[58][59][60][61][62][63][64] (see figure 9), where both scalar and vector superpositions of OAM have been reported (predominantly of a vector nature from waveguide solutions), and more recently VECSEL lasers [65,66].…”

Section: Integrated Solutionsmentioning

confidence: 99%

“…It is inevitable that, as bulk cavities for OAM production matured, the drive towards integrated and compact solutions intensified. LG 0,8 +LG 0,8 +LG 0,1 * L G 0,13 +LG 0,5 +LG 0,0 LG 0,9 +LG 0,9 +LG 0,3 +LG 0,0 lasers [50,[58][59][60][61][62][63][64] (see figure 9), where both scalar and vector superpositions of OAM have been reported (predominantly of a vector nature from waveguide solutions), and more recently VECSEL lasers [65,66].…”

Section: Integrated Solutionsmentioning

confidence: 99%

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Controlling light’s helicity at the source: orbital angular momentum states from lasers

Forbes¹

2017

Phil. Trans. R. Soc. A.

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Optical modes that carry orbital angular momentum (OAM) are routinely produced external to the laser cavity and have found a variety of applications, thus increasing the demand for integrated solutions for their production. Yet such modes are notoriously difficult to produce from lasers due to the strict symmetry requirements for their creation, together with the need to break the degeneracy in helicity. Here, we review the progress made since 1992 in producing such twisted light modes directly at the source, from gas to solid-state lasers, bulk to integrated on-chip solutions, through to generic devices for on-demand OAM in both scalar and vector forms.This article is part of the themed issue 'Optical orbital angular momentum'.

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“…The first approach is putting an OAM converter such as a spiral phase plate that breaks the rotational symmetry of the transverse mode directly on a laser source. Using the direct scheme, lasers such as the microchip laser [8] have been demonstrated recently. The second approach is an indirect scheme by controlling the transverse mode of the laser using optical feedback from an external cavity [9].…”

Section: Introductionmentioning

confidence: 99%

Near-Infrared OAM Communication Using 3D-Printed Microscale Spiral Phase Plates

et al. 2019

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We report the use of 3D-printed microscale spiral phase plates to generate orbital angular momentum (OAM) carrying beams. We confirm that the generated beams have high purity, and we have successfully tested them to convey data signals with low bit error rates at the wavelength of 980 nm. This method will open new opportunities for generating OAM beams for many applications in optical communications, including free-space optics, as well as underwater, chip-tochip, and quantum communications.

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A high repetition rate passively Q-switched microchip laser for controllable transverse laser modes

Cited by 22 publications

References 30 publications

Structured Light from Lasers

Structured Light from Lasers

Controlling light’s helicity at the source: orbital angular momentum states from lasers

Near-Infrared OAM Communication Using 3D-Printed Microscale Spiral Phase Plates

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