Efficient continuous wave deep ultraviolet Pr3+: LiYF4 laser at 261.3 nm

Teoman Gün*, Philip Metz, Günter Huber

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


We report continuous wave deep ultraviolet laser operation at 261.3 nm by intracavity frequency doubling of laser diode pumped Pr3 doped LiYF4 lasers. Using two InGaN laser diodes with a maximum output power of about 1 W each, a 2.9 mm long Pr3:LiYF4 crystal and a 5 mm long beta-barium-borate crystal, coherent radiation with an output power of 481 mW at 261.3 nm was achieved at an optical-to-optical efficiency of 26.1 with respect to the total pump power. Both, linear and nonlinear losses have been calculated to be approximately 0.6 by using a model for intracavity frequency doubling with focussed Gaussian beams.

Original languageEnglish
Article number181103
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number18
Publication statusPublished - 31 Oct 2011


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