Side-pumped continuous-wave Nd:YAG solar laser with 5.4% slope efficiency

Dawei Liang; Cláudia R. Vistas; Joana Almeida; Bruno D. Tibúrcio; Dário Garcia

doi:10.1016/j.solmat.2018.12.029

Side-pumped continuous-wave Nd:YAG solar laser with 5.4% slope efficiency

Dawei Liang, Cláudia R. Vistas, Joana Almeida, Bruno D. Tibúrcio, Dário Garcia

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Abstract

The authors report here a significant progress in side-pumped solar laser slope efficiency by pumping a 3.0 mm diameter, 30 mm length Nd:YAG single-crystal laser rod through a heliostat-parabolic mirror solar energy collection and concentration system with 0.9 m² effective collection area. A large fused silica aspheric lens allowed an efficient focusing of the concentrated solar power from the focal zone of the parabolic mirror into the laser rod mounted within a novel two-dimensional semi-cylindrical pump cavity. 15.3 W continuous-wave 1064 nm solar laser power was measured, resulting in 5.40% slope efficiency and 2.43% solar-to-laser conversion efficency, being 2.08 and 2.30 times, respectively, more than the previous records by side-pumping configuration. The 5.40% slope efficiency is also 1.08 times more than the previous record with Nd:YAG single-crystal rod by end-side-pumping approach. By adopting an asymmetric laser resonator, this novel side-pumping scheme also enabled an efficient production of high-quality solar laser beams in either TEM₁₁ (4.0 W), TEM₀₁ ^* (doughnut-shaped, 2.9 W), TEM₁₀ (3.2 W) or TEM₀₀ (2.8 W) mode profiles.

Original language	English
Pages (from-to)	147-153
Number of pages	7
Journal	Solar Energy Materials and Solar Cells
Volume	192
DOIs	https://doi.org/10.1016/j.solmat.2018.12.029
Publication status	Published - 1 Apr 2019

Keywords

Doughnut-shaped
Lower-order mode
Nd:YAG
Slope efficiency
Solar-pumped laser
TEM-mode

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solmat.2018.12.029Licence: CC BY-NC-ND

Sol. Engery. Sol. Cells. Revised Manuscript 2018Accepted author manuscript, 1.37 MBLicence: CC BY-NC-ND

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title = "Side-pumped continuous-wave Nd:YAG solar laser with 5.4% slope efficiency",

abstract = "The authors report here a significant progress in side-pumped solar laser slope efficiency by pumping a 3.0 mm diameter, 30 mm length Nd:YAG single-crystal laser rod through a heliostat-parabolic mirror solar energy collection and concentration system with 0.9 m2 effective collection area. A large fused silica aspheric lens allowed an efficient focusing of the concentrated solar power from the focal zone of the parabolic mirror into the laser rod mounted within a novel two-dimensional semi-cylindrical pump cavity. 15.3 W continuous-wave 1064 nm solar laser power was measured, resulting in 5.40% slope efficiency and 2.43% solar-to-laser conversion efficency, being 2.08 and 2.30 times, respectively, more than the previous records by side-pumping configuration. The 5.40% slope efficiency is also 1.08 times more than the previous record with Nd:YAG single-crystal rod by end-side-pumping approach. By adopting an asymmetric laser resonator, this novel side-pumping scheme also enabled an efficient production of high-quality solar laser beams in either TEM11 (4.0 W), TEM01 * (doughnut-shaped, 2.9 W), TEM10 (3.2 W) or TEM00 (2.8 W) mode profiles.",

keywords = "Doughnut-shaped, Lower-order mode, Nd:YAG, Slope efficiency, Solar-pumped laser, TEM-mode",

author = "Dawei Liang and Vistas, {Cl{\'a}udia R.} and Joana Almeida and Tib{\'u}rcio, {Bruno D.} and D{\'a}rio Garcia",

note = "info:eu-repo/grantAgreement/FCT/5876/147412/PT# The fellowship grants PD/BD/128267/2016, PD/BD/142827/2018, SFRH/BPD/125116/2016 of B.D. ",

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doi = "10.1016/j.solmat.2018.12.029",

language = "English",

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T1 - Side-pumped continuous-wave Nd:YAG solar laser with 5.4% slope efficiency

AU - Liang, Dawei

AU - Vistas, Cláudia R.

AU - Almeida, Joana

AU - Tibúrcio, Bruno D.

AU - Garcia, Dário

N1 - info:eu-repo/grantAgreement/FCT/5876/147412/PT# The fellowship grants PD/BD/128267/2016, PD/BD/142827/2018, SFRH/BPD/125116/2016 of B.D.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - The authors report here a significant progress in side-pumped solar laser slope efficiency by pumping a 3.0 mm diameter, 30 mm length Nd:YAG single-crystal laser rod through a heliostat-parabolic mirror solar energy collection and concentration system with 0.9 m2 effective collection area. A large fused silica aspheric lens allowed an efficient focusing of the concentrated solar power from the focal zone of the parabolic mirror into the laser rod mounted within a novel two-dimensional semi-cylindrical pump cavity. 15.3 W continuous-wave 1064 nm solar laser power was measured, resulting in 5.40% slope efficiency and 2.43% solar-to-laser conversion efficency, being 2.08 and 2.30 times, respectively, more than the previous records by side-pumping configuration. The 5.40% slope efficiency is also 1.08 times more than the previous record with Nd:YAG single-crystal rod by end-side-pumping approach. By adopting an asymmetric laser resonator, this novel side-pumping scheme also enabled an efficient production of high-quality solar laser beams in either TEM11 (4.0 W), TEM01 * (doughnut-shaped, 2.9 W), TEM10 (3.2 W) or TEM00 (2.8 W) mode profiles.

AB - The authors report here a significant progress in side-pumped solar laser slope efficiency by pumping a 3.0 mm diameter, 30 mm length Nd:YAG single-crystal laser rod through a heliostat-parabolic mirror solar energy collection and concentration system with 0.9 m2 effective collection area. A large fused silica aspheric lens allowed an efficient focusing of the concentrated solar power from the focal zone of the parabolic mirror into the laser rod mounted within a novel two-dimensional semi-cylindrical pump cavity. 15.3 W continuous-wave 1064 nm solar laser power was measured, resulting in 5.40% slope efficiency and 2.43% solar-to-laser conversion efficency, being 2.08 and 2.30 times, respectively, more than the previous records by side-pumping configuration. The 5.40% slope efficiency is also 1.08 times more than the previous record with Nd:YAG single-crystal rod by end-side-pumping approach. By adopting an asymmetric laser resonator, this novel side-pumping scheme also enabled an efficient production of high-quality solar laser beams in either TEM11 (4.0 W), TEM01 * (doughnut-shaped, 2.9 W), TEM10 (3.2 W) or TEM00 (2.8 W) mode profiles.

KW - Doughnut-shaped

KW - Lower-order mode

KW - Nd:YAG

KW - Slope efficiency

KW - Solar-pumped laser

KW - TEM-mode

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DO - 10.1016/j.solmat.2018.12.029

M3 - Article

AN - SCOPUS:85059079736

VL - 192

SP - 147

EP - 153

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

SN - 0927-0248

ER -

Side-pumped continuous-wave Nd:YAG solar laser with 5.4% slope efficiency

Abstract

Keywords

UN SDGs

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