Efficient Ti:LiNbO3 ridge waveguide lasers: Investigation of Er and Yb:Er doped waveguides pumped at 980nm and 1486nm

Dominik Brüske; Sergiy Suntsov; Martin F. Volk; Christian E. Rüter; Detlef Kip

doi:10.1117/12.2289980

15 February 2018 Efficient Ti:LiNbO₃ ridge waveguide lasers: investigation of Er and Yb:Er doped waveguides pumped at 980nm and 1486nm

Dominik Brüske, Sergiy Suntsov, Martin F. Volk, Christian E. Rüter, Detlef Kip

Author Affiliations +

Proceedings Volume 10511, Solid State Lasers XXVII: Technology and Devices; 105112A (2018) https://doi.org/10.1117/12.2289980
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Erbium-ytterbium-codoped titanium in-diffused ridge waveguides optical amplifiers in x-cut congruent LiNbO₃ substrates pumped at 980.5 nm and 1486 nm are reported for the first time. An internal gain of 2.8 dB/cm has been measured in 2.3 cm long Yb:Er:Ti:LiNbO₃ ridge waveguides for the coupled pump power of 145 mW at 980.5 nm, which is the highest gain ever reported, to the best of our knowledge, for erbium-based LiNbO₃ waveguide amplifiers under 980 nm excitation. Furthermore, we realized an internal gain of 3.2 dB/cm for the coupled pump power of 200 mW at 1486 nm, which also exceeds the best literature values for Er:Ti:LiNbO₃ waveguide amplifiers pumped at this wavelength. In addition, we report on a method for local periodic poling (periods of 30 μm and 18.4 μm) of ridge waveguides in LiNbO₃, which allows for future integration of waveguide lasers and nonlinear frequency converters on the same substrate.

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Dominik Brüske, Sergiy Suntsov, Martin F. Volk, Christian E. Rüter, and Detlef Kip "Efficient Ti:LiNbO₃ ridge waveguide lasers: investigation of Er and Yb:Er doped waveguides pumped at 980nm and 1486nm", Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105112A (15 February 2018); https://doi.org/10.1117/12.2289980

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