Diode Pumped Pr³⁺:LiYF₄-BBO Ultraviolet Laser at 320 nm¹

J. H. Li^a, *, X. H. Liu^a, J. B. Wu^a, X. Zhang^a, and Y. L. Li^b

^a School of Physics, Northeast Normal University, Changchun 130024, China

^b School of OptoElectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

*e-mail: lijinhuan1971@163.com

Received October 12, 2011; in final form, October 15, 2011; published online February 6, 2012

Abstract—A diode pumped Pr³⁺:LiYF₄ laser at 639.5 nm has been demonstrated. With an incident pump
power of 920 mW, the maximum red output power was 272 mW. Moreover, intracavity second-harmonic gen-
eration (SHG) has also been achieved with a maximum ultraviolet power of 23 mW by using a -BaB₂O₄
(BBO) nonlinear crystal. To the best of our knowledge, this is the first report on continuous-wave ultraviolet
generation by intracavity frequency doubling Pr³⁺:LiYF₄ laser.

DOI: 10.1134/S1054660X12030073

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