Watt-level 1173 nm Laguerre-Gaussian mode generation from a self-Raman Nd:GdVO4 laser

Yuanyuan Ma; Haruna Sugahara; Andrew J. Lee; Helen M. Pask; Katsuhiko Miyamoto; Takashige Omatsu

doi:10.1109/JLT.2022.3194186

Watt-level 1173 nm Laguerre-Gaussian mode generation from a self-Raman Nd:GdVO₄ laser

Yuanyuan Ma, Haruna Sugahara, Andrew J. Lee, Helen M. Pask, Katsuhiko Miyamoto, Takashige Omatsu

MQ Photonics Research Centre

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

47 Downloads (Pure)

Abstract

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 watt-level bottle beam, formed by the coherent superposition of Gaussian and radial LG modes.

Original language	English
Pages (from-to)	2087-2093
Number of pages	7
Journal	Journal of Lightwave Technology
Volume	41
Issue number	7
Early online date	27 Jul 2022
DOIs	https://doi.org/10.1109/JLT.2022.3194186
Publication status	Published - 1 Apr 2023

Bibliographical note

Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

Laguerre-Gaussian mode
bottle beam
self-Raman Nd:GdVO4 laser
off-axis needle-pumping geometry

Access to Document

10.1109/JLT.2022.3194186Licence: CC BY

Publisher version (open access)Final published version, 3.46 MBLicence: CC BY

Cite this

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title = "Watt-level 1173 nm Laguerre-Gaussian mode generation from a self-Raman Nd:GdVO4 laser",

abstract = "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 watt-level bottle beam, formed by the coherent superposition of Gaussian and radial LG modes.",

keywords = "Laguerre-Gaussian mode, bottle beam, self-Raman Nd:GdVO4 laser, off-axis needle-pumping geometry",

author = "Yuanyuan Ma and Haruna Sugahara and Lee, {Andrew J.} and Pask, {Helen M.} and Katsuhiko Miyamoto and Takashige Omatsu",

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T1 - Watt-level 1173 nm Laguerre-Gaussian mode generation from a self-Raman Nd:GdVO4 laser

AU - Ma, Yuanyuan

AU - Sugahara, Haruna

AU - Lee, Andrew J.

AU - Pask, Helen M.

AU - Miyamoto, Katsuhiko

AU - Omatsu, Takashige

N1 - Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2023/4/1

Y1 - 2023/4/1

N2 - 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 watt-level bottle beam, formed by the coherent superposition of Gaussian and radial LG modes.

AB - 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 watt-level bottle beam, formed by the coherent superposition of Gaussian and radial LG modes.

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KW - self-Raman Nd:GdVO4 laser

KW - off-axis needle-pumping geometry

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