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 languageEnglish
Pages (from-to)11115-11123
Number of pages9
JournalOptics express
Volume16
Issue number15
DOIs
Publication statusPublished - 10 Jul 2008

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continuous radiation
rods
lasers
pumps
fracturing
thermal stresses
cycles
temperature

Keywords

  • IOMS-APD: Active Photonic Devices

Cite this

Bernhardi, E.H. ; Forbes, A. ; Bollig, C. ; Esser, M.J.D. / Estimation of thermal fracture limits in quasi-continuous-wave end-pumped lasers through a time-dependent analytical model. In: Optics express. 2008 ; Vol. 16, No. 15. pp. 11115-11123.
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Estimation of thermal fracture limits in quasi-continuous-wave end-pumped lasers through a time-dependent analytical model. / Bernhardi, E.H.; Forbes, A.; Bollig, C.; Esser, M.J.D.

In: Optics express, Vol. 16, No. 15, 10.07.2008, p. 11115-11123.

Research output: Contribution to journalArticleAcademicpeer-review

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