Low-loss fs-laser-written surface waveguide lasers at >2 µm in monoclinic Tm3+:MgWO4 | Zendy

Esrom Kifle | Zendy; Pavel Loiko | Zendy; Javier R. Vázquez de Aldana | Zendy; Carolina Romero | Zendy; Víctor Llamas | Zendy; Josep María Serres | Zendy; Magdalena Aguiló | Zendy; Francesc Dı́az | Zendy; Lizhen Zhang | Zendy; Zhoubin Lin | Zendy; Haifeng Lin | Zendy; Ge Zhang | Zendy; Viktor Zakharov | Zendy; А. В. Вениаминов | Zendy; Valentin Petrov | Zendy; Uwe Griebner | Zendy; Xavier Mateos | Zendy; Li Wang | Zendy; Weidong Chen | Zendy

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Low-loss fs-laser-written surface waveguide lasers at >2 µm in monoclinic Tm³⁺:MgWO₄

Author(s) -

Esrom Kifle,

Pavel Loiko,

Javier R. Vázquez de Aldana,

Carolina Romero,

Víctor Llamas,

Josep María Serres,

Magdalena Aguiló,

Francesc Dı́az,

Lizhen Zhang,

Zhoubin Lin,

Haifeng Lin,

Ge Zhang,

Viktor Zakharov,

А. В. Вениаминов,

Valentin Petrov,

Uwe Griebner,

Xavier Mateos,

Li Wang,

Weidong Chen

Publication year - 2020

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.395811

Subject(s) - materials science , algorithm , analytical chemistry (journal) , chemistry , computer science , chromatography

Surface channel waveguides (WGs) based on a half-ring (40-60-µm-diameter) depressed-index cladding (type III) geometry are fabricated in monoclinic Tm 3+ :MgWO 4 by femtosecond (fs) laser writing at a repetition rate of 1 kHz. The WGs are characterized by confocal laser microscopy and μ -Raman spectroscopy. A Tm 3+ :MgWO 4 WG laser generates 320 mW at ∼2.02µm with a slope efficiency of 64.4%. The WG emits a transverse single-mode and linear polarization ( E || N m ). A remarkable low loss of <0.1dB/cm is measured for the WG. Vibronic laser emission at ∼2.08µm is also achieved.

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