Excited-State Absorption and Upconversion Pumping of Monoclinic Tm:KLu(WO4)2 Crystals

Aleksey Tyazhev (1) , Pavel Loiko (2) , Lauren Guillemot (2) , Alexandre Kouta , Rosa Maria Solé , Xavier Mateos , Magdalena Aguiló , Francesc Díaz , Hippolyte Dupont (3) , Patrick Georges (3) , Frédéric Druon (3) , Alain Braud (2) , Ammar Hideur (1) , Patrice Camy (2)

1 CORIA-PLASMA
2 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique
3 Laboratoire Charles Fabry / Lasers

Excited-state absorption of Tm 3+ ions ( 3 F 4 → 3 F 2,3 and 3 H 4 ) in the KLu(WO 4 ) 2 crystal is studied. Mid-infrared laser operation ( 3 H 4 → 3 H 5 ) is achieved with this crystal under upconversion pumping at 1.06 μm yielding 433 mW at 2291 nm. © 2022 The Author(s)

Domaines: Physique [physics]

Aleksey Tyazhev, Pavel Loiko, Lauren Guillemot, Alexandre Kouta, Rosa Maria Solé, et al.. Excited-State Absorption and Upconversion Pumping of Monoclinic Tm:KLu(WO4)2 Crystals. Advanced Solid State Lasers, Dec 2022, Barcelona, Spain. pp.ATh1A.1, ⟨10.1364/ASSL.2022.ATh1A.1⟩. ⟨hal-04254073⟩