Author, as appears in the article.: Loiko P; Koopmann P; Mateos X; Serres J; Jambunathan V; Lucianetti A; Mocek T; Aguilo M; Diaz F; Griebner U; Petrov V; Krankel C

Department: Química Física i Inorgànica

URV's Author/s: , / Aguiló Díaz, Magdalena / Mateos Ferré, Xavier / Serres Serres, Josep Maria

Keywords: Thulium doping Thermal lensing Solid-state lasers Sesquioxide crystals

Abstract: © 1995-2012 IEEE. Cubic sesquioxides, RE 2 O 3 , where RE = Y, Lu or Sc, are attractive host crystals for thulium (Tm 3+ ) doping. A comparison of the spectroscopic properties of Tm 3+ :RE 2 O 3 crystals in terms of transition cross sections and cross-relaxation (CR) efficiency required for efficient upconversion pumping is presented. Thermo-optic properties of Tm 3+ :RE 2 O 3 crystals (thermal lensing, fractional heat loading, and thermo-optic coefficients) are described. The positive thermal lens, broadband emission, and efficient CR of the Tm:RE 2 O 3 crystals enable the development of compact, highly efficient and power-scalable lasers operating above 2 ?m, based on thermal guiding. Nowadays, Tm:Lu 2 O 3 microchip lasers are capable of generating nearly 5 W of output power at ?2.06 ?m with a slope efficiency ? of 67% and in a rod geometry-up to 47.5 W with ? of 59%. For multiwatt output at even longer wavelengths around 2.15 ?m, Tm:Sc 2 O 3 is an interesting candidate.

Thematic Areas: Quantum science & technology Physics, applied Optics Materiais Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciência da computação Biotecnología Atomic and molecular physics, and optics Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 1077260X

Author's mail: josepmaria.serres@urv.cat f.diaz@urv.cat xavier.mateos@urv.cat magdalena.aguilo@urv.cat

Author identifier: 0000-0002-4299-538X 0000-0003-4581-4967 0000-0003-1940-1990 0000-0001-6130-9579

Record's date: 2023-10-14

Journal volume: 24

Papper version: info:eu-repo/semantics/acceptedVersion

Link to the original source: https://ieeexplore.ieee.org/document/8247222

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Ieee Journal Of Selected Topics In Quantum Electronics. 24 (5): 1-13

APA: Loiko P; Koopmann P; Mateos X; Serres J; Jambunathan V; Lucianetti A; Mocek T; Aguilo M; Diaz F; Griebner U; Petrov V; Krankel C (2018). Highly Efficient, Compact Tm3+:RE2O3 (RE = Y, Lu, Sc) Sesquioxide Lasers Based on Thermal Guiding. Ieee Journal Of Selected Topics In Quantum Electronics, 24(5), 1-13. DOI: 10.1109/JSTQE.2018.2789886

Article's DOI: 10.1109/JSTQE.2018.2789886

Entity: Universitat Rovira i Virgili

Journal publication year: 2018

First page: Article number 1600713

Publication Type: Journal Publications