Power scale-up and propagation evolution of structured laser beams concentrated on 3D Lissajous parametric surfaces

J. C. Tung; H. C. Liang; Y. C. Lin; Kuan-Wei Su; Kai-Feng Huang; Yung-Fu Chen

doi:10.1088/1612-2011/11/12/125806

Power scale-up and propagation evolution of structured laser beams concentrated on 3D Lissajous parametric surfaces

J. C. Tung^*, H. C. Liang, Y. C. Lin, Kuan-Wei Su, Kai-Feng Huang, Yung-Fu Chen

^*Corresponding author for this work

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

11 Scopus citations

Abstract

We systematically explore the power scale-up and propagation evolution of Lissajous structured beams in a lowly Nd-doped YVO₄ laser with the off-axis pumping scheme. We experimentally found that the average output power can be up to 1.0 W for the output transmission in the range of 1.8-10% at an incident pump power of 6.2 W. It is also found that when the output transmission is greater than 5%, the spatial coherence is considerably reduced to lead to a feature of broken Lissajous figures in transverse patterns. Moreover, transverse patterns varying with propagation direction are remarkably measured to manifest the 3D characteristics of Lissajous structured beams. We also employ the formula of coherent states to make a comparison with experimental observations and to reveal the transverse momentum density varying with propagation direction.

Original language	English
Article number	125806
Number of pages	6
Journal	Laser Physics Letters
Volume	11
Issue number	12
DOIs	https://doi.org/10.1088/1612-2011/11/12/125806
State	Published - 1 Dec 2014

Keywords

Lissajous figures
laser modes
orbital angular momentum
structured beams

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10.1088/1612-2011/11/12/125806

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title = "Power scale-up and propagation evolution of structured laser beams concentrated on 3D Lissajous parametric surfaces",

abstract = "We systematically explore the power scale-up and propagation evolution of Lissajous structured beams in a lowly Nd-doped YVO4 laser with the off-axis pumping scheme. We experimentally found that the average output power can be up to 1.0 W for the output transmission in the range of 1.8-10% at an incident pump power of 6.2 W. It is also found that when the output transmission is greater than 5%, the spatial coherence is considerably reduced to lead to a feature of broken Lissajous figures in transverse patterns. Moreover, transverse patterns varying with propagation direction are remarkably measured to manifest the 3D characteristics of Lissajous structured beams. We also employ the formula of coherent states to make a comparison with experimental observations and to reveal the transverse momentum density varying with propagation direction.",

keywords = "Lissajous figures, laser modes, orbital angular momentum, structured beams",

author = "Tung, {J. C.} and Liang, {H. C.} and Lin, {Y. C.} and Kuan-Wei Su and Kai-Feng Huang and Yung-Fu Chen",

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doi = "10.1088/1612-2011/11/12/125806",

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T1 - Power scale-up and propagation evolution of structured laser beams concentrated on 3D Lissajous parametric surfaces

AU - Tung, J. C.

AU - Liang, H. C.

AU - Lin, Y. C.

AU - Su, Kuan-Wei

AU - Huang, Kai-Feng

AU - Chen, Yung-Fu

PY - 2014/12/1

Y1 - 2014/12/1

N2 - We systematically explore the power scale-up and propagation evolution of Lissajous structured beams in a lowly Nd-doped YVO4 laser with the off-axis pumping scheme. We experimentally found that the average output power can be up to 1.0 W for the output transmission in the range of 1.8-10% at an incident pump power of 6.2 W. It is also found that when the output transmission is greater than 5%, the spatial coherence is considerably reduced to lead to a feature of broken Lissajous figures in transverse patterns. Moreover, transverse patterns varying with propagation direction are remarkably measured to manifest the 3D characteristics of Lissajous structured beams. We also employ the formula of coherent states to make a comparison with experimental observations and to reveal the transverse momentum density varying with propagation direction.

AB - We systematically explore the power scale-up and propagation evolution of Lissajous structured beams in a lowly Nd-doped YVO4 laser with the off-axis pumping scheme. We experimentally found that the average output power can be up to 1.0 W for the output transmission in the range of 1.8-10% at an incident pump power of 6.2 W. It is also found that when the output transmission is greater than 5%, the spatial coherence is considerably reduced to lead to a feature of broken Lissajous figures in transverse patterns. Moreover, transverse patterns varying with propagation direction are remarkably measured to manifest the 3D characteristics of Lissajous structured beams. We also employ the formula of coherent states to make a comparison with experimental observations and to reveal the transverse momentum density varying with propagation direction.

KW - Lissajous figures

KW - laser modes

KW - orbital angular momentum

KW - structured beams

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JO - Laser Physics Letters

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Power scale-up and propagation evolution of structured laser beams concentrated on 3D Lissajous parametric surfaces

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Keywords

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