Cooling schemes for longitudinally diode laser-pumped Nd:YAG rods

R.  Weber; B.  Neuenschwander; M. MacDonald; M. B.  Roos; H. P.  Weber

doi:10.1109/3.678602

Cooling schemes for longitudinally diode laser-pumped Nd:YAG rods

R. Weber, B. Neuenschwander, M. MacDonald, M. B. Roos, H. P. Weber

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

141 Citations (Scopus)

Abstract

Longitudinal diode laser pumping causes pronounced inhomogenous heating of the laser material. The effect of the thermal load on the mechanical and optical properties is significantly influenced by the method used for cooling the pumped surface. Four methods for longitudinally pumped Nd:YAG rods were compared experimentally and with finite-element (FE) analysis. The pumped surface exposed to air or to flowing water, a sapphire plate pressed onto the pumped surface and composite rods, having an undoped pumped end, were investigated. The comparison includes temperature and stress distributions with the emphasis on thermal lensing. Careful validation of the FE code with experiments allowed to numerically comparing the cooling methods under identical conditions.

Original language	English
Pages (from-to)	1046-1053
Number of pages	8
Journal	IEEE Journal of Quantum Electronics
Volume	34
Issue number	6
DOIs	https://doi.org/10.1109/3.678602
Publication status	Published - Jun 1998

Keywords

Cooling
Diode lasers
Heat pumps
Iron
Laser excitation
Optical materials
Optical pumping
Pump lasers
Thermal loading
Thermal stresses

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10.1109/3.678602

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title = "Cooling schemes for longitudinally diode laser-pumped Nd:YAG rods",

abstract = "Longitudinal diode laser pumping causes pronounced inhomogenous heating of the laser material. The effect of the thermal load on the mechanical and optical properties is significantly influenced by the method used for cooling the pumped surface. Four methods for longitudinally pumped Nd:YAG rods were compared experimentally and with finite-element (FE) analysis. The pumped surface exposed to air or to flowing water, a sapphire plate pressed onto the pumped surface and composite rods, having an undoped pumped end, were investigated. The comparison includes temperature and stress distributions with the emphasis on thermal lensing. Careful validation of the FE code with experiments allowed to numerically comparing the cooling methods under identical conditions.",

keywords = "Cooling, Diode lasers, Heat pumps, Iron, Laser excitation, Optical materials, Optical pumping, Pump lasers, Thermal loading, Thermal stresses",

author = "R. Weber and B. Neuenschwander and M. MacDonald and Roos, {M. B.} and Weber, {H. P.}",

year = "1998",

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T1 - Cooling schemes for longitudinally diode laser-pumped Nd:YAG rods

AU - Weber, R.

AU - Neuenschwander, B.

AU - MacDonald, M.

AU - Roos, M. B.

AU - Weber, H. P.

PY - 1998/6

Y1 - 1998/6

N2 - Longitudinal diode laser pumping causes pronounced inhomogenous heating of the laser material. The effect of the thermal load on the mechanical and optical properties is significantly influenced by the method used for cooling the pumped surface. Four methods for longitudinally pumped Nd:YAG rods were compared experimentally and with finite-element (FE) analysis. The pumped surface exposed to air or to flowing water, a sapphire plate pressed onto the pumped surface and composite rods, having an undoped pumped end, were investigated. The comparison includes temperature and stress distributions with the emphasis on thermal lensing. Careful validation of the FE code with experiments allowed to numerically comparing the cooling methods under identical conditions.

AB - Longitudinal diode laser pumping causes pronounced inhomogenous heating of the laser material. The effect of the thermal load on the mechanical and optical properties is significantly influenced by the method used for cooling the pumped surface. Four methods for longitudinally pumped Nd:YAG rods were compared experimentally and with finite-element (FE) analysis. The pumped surface exposed to air or to flowing water, a sapphire plate pressed onto the pumped surface and composite rods, having an undoped pumped end, were investigated. The comparison includes temperature and stress distributions with the emphasis on thermal lensing. Careful validation of the FE code with experiments allowed to numerically comparing the cooling methods under identical conditions.

KW - Cooling

KW - Diode lasers

KW - Heat pumps

KW - Iron

KW - Laser excitation

KW - Optical materials

KW - Optical pumping

KW - Pump lasers

KW - Thermal loading

KW - Thermal stresses

U2 - 10.1109/3.678602

DO - 10.1109/3.678602

M3 - Article

SN - 0018-9197

VL - 34

SP - 1046

EP - 1053

JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

IS - 6

ER -

Cooling schemes for longitudinally diode laser-pumped Nd:YAG rods

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Keywords

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