Excited-state absorption and upconversion pumping of Tm3+-doped potassium lutetium double tungstate.
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DOI: 10.1364/oe.487130
Abstract: We report on a bulk thulium laser operating on the 3H4 → 3H5 transition with pure upconversion pumping at 1064 nm by an ytterbium fiber laser (addressing the 3F4 → 3F2,3 excited-state absorption (ESA) transition of… read more here.
Keywords: tm3 doped; upconversion; upconversion pumping; state absorption ... See more keywords
Thulium laser at ∼2.3 μm based on upconversion pumping.
Sign Up to like & getrecommendations! Published in 2019 at "Optics letters"
DOI: 10.1364/ol.44.004071
Abstract: We report on novel upconversion (UC) pumping schemes for 2.3 μm thulium (Tm) lasers (the H43→H53 transition) based on a photon avalanche mechanism populating the intermediate metastable level (F43) acting as an effective ground state. The… read more here.
Keywords: upconversion pumping; based upconversion; laser based; laser ... See more keywords