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Título
Low-loss fs-laser-written surface waveguide lasers at >2 µm in monoclinic Tm3+:MgWO4
Autor(es)
Materia
Channeled waveguides
Confocal microscopy
Laser beams
Polarized light
Ti:sapphire lasers
Waveguide lasers
Fecha de publicación
2020-07
Citación
Kifle, E. et al. (2020). Low-loss fs-laser-written surface waveguide lasers at >2 µm in monoclinic Tm3+:MgWO4. Opt. Lett. 45, 4060-4063. https://doi.org/10.1364/OL.395811
Resumen
[EN]Surface channel waveguides (WGs) based on a half-ring (40–60-µm-diameter) depressed-index cladding (type III) geometry are fabricated in monoclinic Tm3+:MgWO4 by femtosecond (fs) laser writing at a repetition rate of 1 kHz. The WGs are characterized by confocal laser microscopy and 𝜇-Raman spectroscopy. A Tm3+:MgWO4 WG laser generates 320 mW at ∼2.02µm with a slope efficiency of 64.4%. The WG emits a transverse single-mode and linear polarization (𝐸||𝑁𝑚). A remarkable low loss of <0.1dB/cm is measured for the WG. Vibronic laser emission at ∼2.08µm is also achieved.
URI
ISSN
0146-9592
DOI
10.1364/OL.395811
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- ALF. Artículos [297]
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