Multi-Fresnel-Lens Pumping Approach for Simultaneous Emission of Seven TEM00-Mode Beams with 3.73% Conversion Efficiency

Costa, Hugo; Liang, Dawei; Matos, Ana; Almeida, Joana

doi:10.3390/photonics11090889

Open AccessArticle

Multi-Fresnel-Lens Pumping Approach for Simultaneous Emission of Seven TEM₀₀-Mode Beams with 3.73% Conversion Efficiency

Centre of Physics and Technological Research, Physics Department, NOVA School of Science and Technology, 2829-516 Caparica, Portugal

^*

Author to whom correspondence should be addressed.

Photonics 2024, 11(9), 889; https://doi.org/10.3390/photonics11090889

Submission received: 15 August 2024 / Revised: 19 September 2024 / Accepted: 20 September 2024 / Published: 20 September 2024

(This article belongs to the Section Lasers, Light Sources and Sensors)

Download

Browse Figures

Versions Notes

Abstract

TEM₀₀-mode operation is a requirement in many laser-based applications due to the small divergence and high-power density of the emitted laser beam. A solar laser scheme was designed and numerically studied with the goal of increasing the solar-to-laser power conversion efficiency in the TEM₀₀-mode operation. The collection and primary concentration of sunlight was performed via twelve sets of folding mirrors and Fresnel lenses, toward a laser head composed of a fused silica torus volume and seven Ce:Nd:YAG rods, in a side-pump configuration. With this scheme, TEM₀₀-mode laser power totaling 212.39 W could potentially be produced from seven beams, with six of them being 32.60 W each and with

M_{x}^{2}

= 1.00,

M_{y}^{2}

= 1.01 quality factors. Notably, 35.40 W/m² collection efficiency and, most importantly, 3.73% solar-to-laser power conversion efficiency were numerically achieved. The latter efficiency value represents a 1.81-time improvement over the experimental record, established with a prototype that had a single Ce:Nd:YAG rod in an end-side pump configuration.

Keywords: Ce:Nd:YAG; Fresnel lens; solar laser; TEM₀₀ mode

Share and Cite

MDPI and ACS Style

Costa, H.; Liang, D.; Matos, A.; Almeida, J. Multi-Fresnel-Lens Pumping Approach for Simultaneous Emission of Seven TEM₀₀-Mode Beams with 3.73% Conversion Efficiency. Photonics 2024, 11, 889. https://doi.org/10.3390/photonics11090889

AMA Style

Costa H, Liang D, Matos A, Almeida J. Multi-Fresnel-Lens Pumping Approach for Simultaneous Emission of Seven TEM₀₀-Mode Beams with 3.73% Conversion Efficiency. Photonics. 2024; 11(9):889. https://doi.org/10.3390/photonics11090889

Chicago/Turabian Style

Costa, Hugo, Dawei Liang, Ana Matos, and Joana Almeida. 2024. "Multi-Fresnel-Lens Pumping Approach for Simultaneous Emission of Seven TEM₀₀-Mode Beams with 3.73% Conversion Efficiency" Photonics 11, no. 9: 889. https://doi.org/10.3390/photonics11090889

APA Style

Costa, H., Liang, D., Matos, A., & Almeida, J. (2024). Multi-Fresnel-Lens Pumping Approach for Simultaneous Emission of Seven TEM₀₀-Mode Beams with 3.73% Conversion Efficiency. Photonics, 11(9), 889. https://doi.org/10.3390/photonics11090889

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Menu

Multi-Fresnel-Lens Pumping Approach for Simultaneous Emission of Seven TEM₀₀-Mode Beams with 3.73% Conversion Efficiency

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI