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

Research output: Contribution to journalArticle

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.

LanguageEnglish
Pages4008-4012
Number of pages5
JournalApplied Optics
Volume57
Issue number15
Early online date6 Apr 2018
DOIs
Publication statusPublished - 20 May 2018

Fingerprint

solar-pumped lasers
liquid cooling
Scattering
Cooling
rods
Lasers
Liquids
scattering
lasers
paints
Paint
water
output
Water
neodymium
sunlight
solid state lasers
ray tracing
Neodymium
Solid state lasers

Keywords

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

Cite this

Smyth, Conor ; Mirkhanov, Shamil ; Quarterman, Adrian ; Wilcox, Keith. / 27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid. In: Applied Optics. 2018 ; Vol. 57, No. 15. pp. 4008-4012.
@article{5447f266dffd4a44b518454293a60690,
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",
month = "5",
day = "20",
doi = "10.1364/AO.57.004008",
language = "English",
volume = "57",
pages = "4008--4012",
journal = "Applied Optics",
issn = "1559-128X",
publisher = "Optical Society of America",
number = "15",

}

27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid. / Smyth, Conor (Lead / Corresponding author); Mirkhanov, Shamil; Quarterman, Adrian; Wilcox, Keith.

In: Applied Optics, Vol. 57, No. 15, 20.05.2018, p. 4008-4012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 27.5 W/m2 collection efficiency solar laser using a diffuse scattering cooling liquid

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

M3 - Article

VL - 57

SP - 4008

EP - 4012

JO - Applied Optics

T2 - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 15

ER -