Spectroscopic properties and continuous-wave deep-red laser operation of Eu^sup 3+^-doped LiYF^sub 4

Eu3+-doped LiYF4 is reexamined as a laser material for the visible spectral region. Polarized absorption and emission cross sections as well as the fluorescence lifetime are determined. Branching ratios and radiative lifetime are calculated within the theory of 4f-4f transition intensities, which ta...

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Bibliographic Details
Published in:Optics letters 2018-05, Vol.43 (10), p.2364
Main Authors: Demesh, Maxim, Yasukevich, Anatol, Kisel, Viktor, Dunina, Elena, Kornienko, Alexey, Dashkevich, Vladimir, Orlovich, Valentin, Castellano-Hernández, Elena, Kränkel, Christian, Kuleshov, Nikolay
Format: Article
Language:English
Subjects:
Continuous wave lasers
Fluorescence
Lasers
Radiative lifetime
Sapphire
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Summary:Eu3+-doped LiYF4 is reexamined as a laser material for the visible spectral region. Polarized absorption and emission cross sections as well as the fluorescence lifetime are determined. Branching ratios and radiative lifetime are calculated within the theory of 4f-4f transition intensities, which takes into account the influence of an excited configuration of the opposite parity 4fN−15d. Continuous-wave laser operation at 702 nm is demonstrated with a maximum output power of 15 mW and a slope efficiency of 4.6% under pumping with a frequency-doubled Ti:sapphire laser at 393.5 nm.
ISSN:0146-9592
1539-4794