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Ultrafast lasers with multi-GHz repetition rates can have applications in areas such as biophotonics, optical frequency metrology, optical sampling, optical communications and as astro-combs. Ultrafast waveguide lasers with monolithically integrated saturable absorber elements are very promising candidates for multi-GHz operation, benefiting from a low-threshold mode-locked operation and high efficiency...
Recent work in the area of Tm3+ and Ho3+‐doped tellurite fibre and bulk glass lasers operating close to 2 μ m is reviewed. Spectroscopic properties of these doped glasses are discussed as well as the relevant pump schemes and energy transfer processes involved. Results of continuous wave (CW) and Q‐switched Tm3+ and Ho3+‐doped tellurite fibre lasers are then presented and discussed. Finally, the results...
In this report we have presented a spectroscopic and CW laser characterization of an efficient thulium doped GPNG bulk germanate glass pumped at 792 nm by Ti: Sapphire radiation. Laser characterization gave a maximum slope efficiency of 50 % comparable to the crystalline counterparts and we believe, to the best of our knowledge, this being the best for Tm-doped bulk glass lasers. The maximum output...
We report the use of a 1213 nm GaInNAs/GaAs semiconductor disk laser as an alternative pump for a Tm3+:TZNG glass laser. Emission with up to 26 mW at 1952 nm with a slope efficiency of 13.3% is obtained.
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