High-energy resonantly diode-pumped Q-switched Ho3+:YAG laser

A. Berrou*, T. Ibach, M. Eichhorn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


We report on a Q-switched Ho3+:YAG laser resonantly pumped by fiber-coupled high-spectral-brightness laser diodes emitting at 1.91 μm. Using a 75-mm-long composite crystal pumped by two fiber-coupled diode modules, 18 W was obtained at a wavelength of 2121 nm for 53 W of injected power with a slope efficiency of 51 % with respect to absorbed power. The beam propagation factor (M2) was measured to be 1.2 at the maximum output power. The laser performance in Q-switched operation was recorded for different repetition rates between 100 Hz and 20 kHz. A maximum output energy of 8.7 mJ was measured at 1 kHz repetition rate.
Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalApplied Physics B: Lasers and Optics
Issue number1
Publication statusPublished - Jul 2015




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