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

    17 Citations (Scopus)

    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 Yb3+ 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
    Article number1131
    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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