27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid

Conor Smyth; Shamil Mirkhanov; Adrian Quarterman; Keith Wilcox

doi:10.1364/AO.57.004008

27.5 W/m² collection efficiency solar laser using a diffuse scattering cooling liquid

Conor Smyth (Lead / Corresponding author), Shamil Mirkhanov, Adrian Quarterman, Keith Wilcox

Physics

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

25 Citations (Scopus)

258 Downloads (Pure)

Abstract

We report a solar pumped solid state laser using a 20 mm long, 3 mm diameter neodymium-doped yttrium aluminum garnet laser rod. This rod was placed in a liquid cooling chamber using a water–white-emulsion-paint mix. This mix provides cooling for the laser crystal and also doubles as a diffuse light scattering liquid. This enhances sunlight scattering and leads to a greater absorption in the laser rod. We numerically model the solar absorption in the laser rod using a ray-tracing model and predict a 2.6 times enhancement in absorption when a 98% reflective diffuse scatter is modelled compared to 0% scattering. We experimentally demonstrated this, showing a 2.58 times increase in average output power of the solar laser compared to the use of pure water as a cooling liquid. Using the water–white-paint scattering cooling liquid, we demonstrated a laser with an output power of 2.3 W and with a collection efficiency of 27.5 W∕m².

Original language	English
Pages (from-to)	4008-4012
Number of pages	5
Journal	Applied Optics
Volume	57
Issue number	15
Early online date	6 Apr 2018
DOIs	https://doi.org/10.1364/AO.57.004008
Publication status	Published - 20 May 2018

Keywords

High power lasers
Laser modes
Laser systems
Nd: YAG lasers
Rod lasers
Solid state lasers

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

Access to Document

10.1364/AO.57.004008Licence: CC BY

Final Published VersionFinal published version, 1.09 MBLicence: CC BY

1 Finished

Tuneable Gigahertz Mode Spaced Frequency Combs (Fellowship)
Wilcox, K. (Investigator)
Engineering and Physical Sciences Research Council
1/10/13 → 28/02/18
Project: Research

25 Citations
1 Article

27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid: erratum
Smyth, C. J. C. (Lead / Corresponding author), Mirkhanov, S., Quarterman, A. H. & Wilcox, K. G., 20 Jan 2020, In: Applied Optics. 59, 3, p. 800 1 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
2 Citations (Scopus)

186 Downloads (Pure)

Figures in support of 27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid
Smyth, C. (Creator), University of Dundee, 2018
DOI: 10.15132/10000133, https://www.osapublishing.org/ao/upcoming_pdf.cfm?id=323328
Dataset

File

Wilcox, Keith
- Physics - Senior Lecturer (Teaching and Research)
Person: Academic

Cite this

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title = "27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid",

abstract = "We report a solar pumped solid state laser using a 20 mm long, 3 mm diameter neodymium-doped yttrium aluminum garnet laser rod. This rod was placed in a liquid cooling chamber using a water–white-emulsion-paint mix. This mix provides cooling for the laser crystal and also doubles as a diffuse light scattering liquid. This enhances sunlight scattering and leads to a greater absorption in the laser rod. We numerically model the solar absorption in the laser rod using a ray-tracing model and predict a 2.6 times enhancement in absorption when a 98% reflective diffuse scatter is modelled compared to 0% scattering. We experimentally demonstrated this, showing a 2.58 times increase in average output power of the solar laser compared to the use of pure water as a cooling liquid. Using the water–white-paint scattering cooling liquid, we demonstrated a laser with an output power of 2.3 W and with a collection efficiency of 27.5 W∕m2.",

keywords = "High power lasers, Laser modes, Laser systems, Nd: YAG lasers, Rod lasers, Solid state lasers",

author = "Conor Smyth and Shamil Mirkhanov and Adrian Quarterman and Keith Wilcox",

note = "Funding: EPSRC (EP/J017043/2)",

year = "2018",

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doi = "10.1364/AO.57.004008",

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AU - Smyth, Conor

AU - Mirkhanov, Shamil

AU - Quarterman, Adrian

AU - Wilcox, Keith

N1 - Funding: EPSRC (EP/J017043/2)

PY - 2018/5/20

Y1 - 2018/5/20

N2 - We report a solar pumped solid state laser using a 20 mm long, 3 mm diameter neodymium-doped yttrium aluminum garnet laser rod. This rod was placed in a liquid cooling chamber using a water–white-emulsion-paint mix. This mix provides cooling for the laser crystal and also doubles as a diffuse light scattering liquid. This enhances sunlight scattering and leads to a greater absorption in the laser rod. We numerically model the solar absorption in the laser rod using a ray-tracing model and predict a 2.6 times enhancement in absorption when a 98% reflective diffuse scatter is modelled compared to 0% scattering. We experimentally demonstrated this, showing a 2.58 times increase in average output power of the solar laser compared to the use of pure water as a cooling liquid. Using the water–white-paint scattering cooling liquid, we demonstrated a laser with an output power of 2.3 W and with a collection efficiency of 27.5 W∕m2.

AB - We report a solar pumped solid state laser using a 20 mm long, 3 mm diameter neodymium-doped yttrium aluminum garnet laser rod. This rod was placed in a liquid cooling chamber using a water–white-emulsion-paint mix. This mix provides cooling for the laser crystal and also doubles as a diffuse light scattering liquid. This enhances sunlight scattering and leads to a greater absorption in the laser rod. We numerically model the solar absorption in the laser rod using a ray-tracing model and predict a 2.6 times enhancement in absorption when a 98% reflective diffuse scatter is modelled compared to 0% scattering. We experimentally demonstrated this, showing a 2.58 times increase in average output power of the solar laser compared to the use of pure water as a cooling liquid. Using the water–white-paint scattering cooling liquid, we demonstrated a laser with an output power of 2.3 W and with a collection efficiency of 27.5 W∕m2.

KW - High power lasers

KW - Laser modes

KW - Laser systems

KW - Nd: YAG lasers

KW - Rod lasers

KW - Solid state lasers

U2 - 10.1364/AO.57.004008

DO - 10.1364/AO.57.004008

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ER -

27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Projects

Tuneable Gigahertz Mode Spaced Frequency Combs (Fellowship)

Research output

27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid: erratum

Datasets

Figures in support of 27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid

Profiles

Wilcox, Keith

Cite this

27.5 W/m² collection efficiency solar laser using a diffuse scattering cooling liquid