Laser Operation in a Tm:LuAG Crystal Grown by the Micro-Pulling-Down Technique - Archive ouverte HAL Access content directly
Journal Articles IEEE Photonics Technology Letters Year : 2018

Laser Operation in a Tm:LuAG Crystal Grown by the Micro-Pulling-Down Technique

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Abstract

We report on the growth and laser operation of Tm:Lu3Al5O12 (Tm:LuAG) single crystal grown via the micropulling-down (μ-PD) method, for the first time to the best of our knowledge. Spectral properties (absorption and fluorescence) and fluorescence lifetime of the Tm:LuAG crystal were measured at room temperature. Using a 790-nm diode laser as pump source, continuous-wave laser operation of the Tm:LuAG crystal was demonstrated with a maximum output power of 2.88 W and a slope efficiency of about 39.1% at 2016 nm. Passively Q-switched laser operation was also investigated using Cr:ZnSe as saturable absorber. The maximum average output power reached about 0.53 W with the shortest pulse width of 54.3 ns and a pulse energy of 21.9 μJ. This letter reveals that the μ-PD technique is reliable for growing high-performance Tm3+-doped crystals for various potential applications.
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Dates and versions

hal-02289850 , version 1 (17-09-2019)

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Cite

Q. S. Song, X. D. Xu, Z. Y. Zhou, B. Xu, D. Z. Li, et al.. Laser Operation in a Tm:LuAG Crystal Grown by the Micro-Pulling-Down Technique. IEEE Photonics Technology Letters, 2018, 30 (22), pp.1913-1916. ⟨10.1109/LPT.2018.2872008⟩. ⟨hal-02289850⟩
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