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

Aleksey Tyazhev (1) , Pavel Loiko (2) , Lauren Guillemot (2) , Hippolyte Dupont (3) , Alexandre Kouta (1) , Rosa Maria Solé (4) , Xavier Mateos (4) , Magdalena Aguiló (4) , Francesc Díaz (4) , 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
4 FiCMA-FiCNA - Fisica I Cristal⋅lografia de Materials I Nanomaterials

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)

Domains: Physics [physics]

Aleksey Tyazhev, Pavel Loiko, Lauren Guillemot, Hippolyte Dupont, Alexandre Kouta, 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⟩