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Direct generation of the first-radial-order Laguerre-Gaussian mode in a Nd:YVO(4)laser incorporating a core-ring-shaped pump fibre
- Issue Date
- Sep-2020
- Publisher
- Maik Nauka/Interperiodica Publishing
- Keywords
- Nd; YVO4; Laguerre-Gaussian mode; beam propagation
- Citation
- Laser Physics, v.30, no.9, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- Laser Physics
- Volume
- 30
- Number
- 9
- Start Page
- 1
- End Page
- 6
- ISSN
- 1054-660X
- Abstract
- We report a diode-end-pumped Nd:YVO(4)laser with a first-radial-order Laguerre-Gaussian (LG(10)) mode output by using a pump beam shaping scheme. A simple method for conditioning the diode pump beam using a core-ring-shaped pump fibre allows selective excitation of the LG(10)mode in the Nd:YVO(4)laser resonator, yielding 0.35 W of continuous-wave output in a core-ring-shaped LG(10)mode beam with a beam propagation factor (M-2) of <3.2. The corresponding slope efficiency with respect to the incident pump power was 21%. We also investigated the beam propagating characteristics of the LG(10)mode beam showing that the core beam of the LG(10)mode has a smaller focused beam size accompanied by lower divergence, compared with the TEM(00)mode beam. The prospects for further power scaling and generation of a higher order LG(p0)mode are discussed.
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Related Researcher
- Kim, Ji Won
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)