Electronic and thermal lensing in diode end-pumped Yb:YAG laser rods and discs

Oleg L. Antipov, E.A. Anashkina, K.A. Fedorova

Research output: Contribution to journalArticlepeer-review

Abstract

The lensing effects in diode end-pumped Yb:YAG laser rods and discs are studied. Two mechanisms of refractive-index changes are taken into account, thermal and electronic (due to the difference between the excited- and ground-state Yb polarisabilities), as well as pump-induced deformation of the laser crystal. Under pulsed pumping, the electronic lensing effect prevails over the thermal one in both rods and discs. In rods pumped by a highly focused cw beam, the dioptric power of the electronic lens exceeds that of the thermal lens, whereas in discs steady-state lensing is predominantly due to the thermal mechanism.
Original languageEnglish
Pages (from-to)1131-1136
Number of pages6
JournalQuantum Electronics
Volume39
Issue number12
DOIs
Publication statusPublished - 2009

Keywords

  • diode end-pumping
  • electronic lensing
  • laser disks
  • laser rods
  • thermal lensing
  • Yb:YAG laser crystals

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