Estimation of thermal fracture limits in quasi-continuous-wave end-pumped lasers through a time-dependent analytical model

E.H. Bernhardi; A. Forbes; C. Bollig; M.J.D. Esser

doi:10.1364/OE.16.011115

Estimation of thermal fracture limits in quasi-continuous-wave end-pumped lasers through a time-dependent analytical model

E.H. Bernhardi, A. Forbes, C. Bollig, M.J.D. Esser

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Abstract

A time–dependent analytical thermal model of the temperature and the corresponding induced thermal stresses on the pump face of quasi–continuous wave (qcw) end-pumped laser rods is derived. We apply the model to qcw diode–end–pumped rods and show the maximum peak pump power that can be utilized without fracturing the rod. To illustrate an application of the model, it is applied to a qcw pumped Tm:YLF rod and found to be in very good agreement with published experimental results. The results indicate new criteria to avoid fracture when operating Tm:YLF rods at low qcw pump duty cycles.

Original language	English
Pages (from-to)	11115-11123
Number of pages	9
Journal	Optics express
Volume	16
Issue number	15
DOIs	https://doi.org/10.1364/OE.16.011115
Publication status	Published - 10 Jul 2008

Keywords

IOMS-APD: Active Photonic Devices

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Bernhardi2008estimationFinal published version, 388 KBLicence: CC BY

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title = "Estimation of thermal fracture limits in quasi-continuous-wave end-pumped lasers through a time-dependent analytical model",

abstract = "A time–dependent analytical thermal model of the temperature and the corresponding induced thermal stresses on the pump face of quasi–continuous wave (qcw) end-pumped laser rods is derived. We apply the model to qcw diode–end–pumped rods and show the maximum peak pump power that can be utilized without fracturing the rod. To illustrate an application of the model, it is applied to a qcw pumped Tm:YLF rod and found to be in very good agreement with published experimental results. The results indicate new criteria to avoid fracture when operating Tm:YLF rods at low qcw pump duty cycles.",

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AU - Bernhardi, E.H.

AU - Forbes, A.

AU - Bollig, C.

AU - Esser, M.J.D.

PY - 2008/7/10

Y1 - 2008/7/10

N2 - A time–dependent analytical thermal model of the temperature and the corresponding induced thermal stresses on the pump face of quasi–continuous wave (qcw) end-pumped laser rods is derived. We apply the model to qcw diode–end–pumped rods and show the maximum peak pump power that can be utilized without fracturing the rod. To illustrate an application of the model, it is applied to a qcw pumped Tm:YLF rod and found to be in very good agreement with published experimental results. The results indicate new criteria to avoid fracture when operating Tm:YLF rods at low qcw pump duty cycles.

AB - A time–dependent analytical thermal model of the temperature and the corresponding induced thermal stresses on the pump face of quasi–continuous wave (qcw) end-pumped laser rods is derived. We apply the model to qcw diode–end–pumped rods and show the maximum peak pump power that can be utilized without fracturing the rod. To illustrate an application of the model, it is applied to a qcw pumped Tm:YLF rod and found to be in very good agreement with published experimental results. The results indicate new criteria to avoid fracture when operating Tm:YLF rods at low qcw pump duty cycles.

KW - IOMS-APD: Active Photonic Devices

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JO - Optics express

JF - Optics express

IS - 15

ER -

Estimation of thermal fracture limits in quasi-continuous-wave end-pumped lasers through a time-dependent analytical model

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