Articles producció científica> Química Física i Inorgànica

Watt-level ultrafast laser inscribed thulium waveguide lasers

  • Identification data

    Identifier: imarina:6466297
    Handle: https://hdl.handle.net/20.500.11797/imarina6466297
    Authors:
    Kifle ELoiko PRomero CVázquez de Aldana JRAguiló MDíaz FCamy PGriebner UPetrov VMateos X
    Abstract:
    © 2020 Elsevier Ltd We report on the first watt-level ultrafast laser inscribed Thulium waveguide (WG) lasers. Depressed-index buried channel WGs with a circular cladding (type III) are produced in monoclinic Tm3+:KLu(WO4)2 crystals. Laser operation is achieved under conventional (3H6 → 3H4) and in-band (3H6 → 3F4) pumping. In the former case, employing a Raman fiber laser emitting at 1679 ​nm as pump, the continuous-wave Tm channel WG laser generated 1.37 ​W ​at 1915–1923 ​nm with a record-high slope efficiency of 82.7% (with respect to the absorbed pump power), a threshold of only 17 ​mW and a spatially single-mode output with linear polarization. The WG propagation losses were 0.2 ​± ​0.3 ​dB/cm. Passive Q-switching of Tm channel WG lasers is achieved using Cr2+:ZnS and Cr2+:ZnSe saturable absorbers. With Cr2+:ZnS, record-short pulses of 2.6 ns/6.9 ​μJ ​at a repetition rate of 8.0 ​kHz were generated. The developed WGs are promising for compact GHz mode-locked lasers at ~2 ​μm.

  • Others:

    Author, as appears in the article.: Kifle E; Loiko P; Romero C; Vázquez de Aldana JR; Aguiló M; Díaz F; Camy P; Griebner U; Petrov V; Mateos X
    Department: Química Física i Inorgànica
    URV's Author/s: Aguiló Díaz, Magdalena / Díaz González, Francisco Manuel / Mateos Ferré, Xavier
    Keywords: Thermal-lens Slope efficiency Saturable absorber Pumped tm Operation Mu-m Microchip laser Fiber laser Femtosecond Athermal directions
    Abstract: © 2020 Elsevier Ltd We report on the first watt-level ultrafast laser inscribed Thulium waveguide (WG) lasers. Depressed-index buried channel WGs with a circular cladding (type III) are produced in monoclinic Tm3+:KLu(WO4)2 crystals. Laser operation is achieved under conventional (3H6 → 3H4) and in-band (3H6 → 3F4) pumping. In the former case, employing a Raman fiber laser emitting at 1679 ​nm as pump, the continuous-wave Tm channel WG laser generated 1.37 ​W ​at 1915–1923 ​nm with a record-high slope efficiency of 82.7% (with respect to the absorbed pump power), a threshold of only 17 ​mW and a spatially single-mode output with linear polarization. The WG propagation losses were 0.2 ​± ​0.3 ​dB/cm. Passive Q-switching of Tm channel WG lasers is achieved using Cr2+:ZnS and Cr2+:ZnSe saturable absorbers. With Cr2+:ZnS, record-short pulses of 2.6 ns/6.9 ​μJ ​at a repetition rate of 8.0 ​kHz were generated. The developed WGs are promising for compact GHz mode-locked lasers at ~2 ​μm.
    Thematic Areas: Statistical and nonlinear physics Quantum science & technology Physics, applied Optics Engineering, electrical & electronic Electronic, optical and magnetic materials Electrical and electronic engineering Atomic and molecular physics, and optics
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 00796727
    Author's mail: magdalena.aguilo@urv.cat xavier.mateos@urv.cat f.diaz@urv.cat
    Author identifier: 0000-0001-6130-9579 0000-0003-1940-1990 0000-0003-4581-4967
    Record's date: 2024-10-19
    Papper version: info:eu-repo/semantics/acceptedVersion
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Progress In Quantum Electronics. 72 (100266):
    APA: Kifle E; Loiko P; Romero C; Vázquez de Aldana JR; Aguiló M; Díaz F; Camy P; Griebner U; Petrov V; Mateos X (2020). Watt-level ultrafast laser inscribed thulium waveguide lasers. Progress In Quantum Electronics, 72(100266), -. DOI: 10.1016/j.pquantelec.2020.100266
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2020
    Publication Type: Journal Publications

  • Keywords:

    Atomic and Molecular Physics, and Optics,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Engineering, Electrical & Electronic,Optics,Physics, Applied,Quantum Science & Technology,Statistical and Nonlinear Physics
    Thermal-lens
    Slope efficiency
    Saturable absorber
    Pumped tm
    Operation
    Mu-m
    Microchip laser
    Fiber laser
    Femtosecond
    Athermal directions
    Statistical and nonlinear physics
    Quantum science & technology
    Physics, applied
    Optics
    Engineering, electrical & electronic
    Electronic, optical and magnetic materials
    Electrical and electronic engineering
    Atomic and molecular physics, and optics

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