Diode-pumped and tunable laser operation of Tm,Ho-codoped modified CNGG-type disordered crystals

Zhongben Pan; Pavel Loiko; Yicheng Wang; Yongguang Zhao; Hualei Yuan; Josep Maria Serres; Weidong Chen; Li Wang; Uwe Griebner; Valentin Petrov; Magdalena Aguiló; Francesc Díaz; Xavier Mateos Ferré

doi:10.1117/12.2610330

4 March 2022 Diode-pumped and tunable laser operation of Tm,Ho-codoped modified CNGG-type disordered crystals

Zhongben Pan, Pavel Loiko, Yicheng Wang, Yongguang Zhao, Hualei Yuan, Josep Maria Serres, Weidong Chen, Li Wang, Uwe Griebner, Valentin Petrov, Magdalena Aguiló, Francesc Díaz, Xavier Mateos Ferré

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Proceedings Volume 11980, Solid State Lasers XXXI: Technology and Devices; 1198003 (2022) https://doi.org/10.1117/12.2610330
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

A comparative study of three disordered calcium niobium gallium garnet (CNGG)-type crystals codoped with Tm³⁺ and Ho³⁺ ions is performed: (i) without host modifiers (CNGG), (ii) with Li⁺ cations added (CLNGG), and (iii) with Li⁺ and La³⁺ cations added (LCLNGG), all grown by the Czochralski method. The crystals exhibit inhomogeneously broadened luminescence bands extending beyond 2.1 μm. A diode-pumped Tm,Ho:LCLNGG laser generates 562 mW at 2082 nm with a slope efficiency of 17.4% and a laser threshold of 0.46 W. A continuous wavelength tuning between 1904.1 and 2121.1 nm (tuning range: 217 nm) is achieved with this new garnet compound. The Tm,Ho:LCLNGG crystal is promising for generation of ultrashort pulses from mode-locked lasers emitting above 2 μm.

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Zhongben Pan, Pavel Loiko, Yicheng Wang, Yongguang Zhao, Hualei Yuan, Josep Maria Serres, Weidong Chen, Li Wang, Uwe Griebner, Valentin Petrov, Magdalena Aguiló, Francesc Díaz, and Xavier Mateos Ferré "Diode-pumped and tunable laser operation of Tm,Ho-codoped modified CNGG-type disordered crystals", Proc. SPIE 11980, Solid State Lasers XXXI: Technology and Devices, 1198003 (4 March 2022); https://doi.org/10.1117/12.2610330

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