AI Article Synopsis
- Researchers explored solid-state 2 µm lasers using thulium-doped materials (Tm:YAG, Tm:YAP, Tm:YLF) with 1.7 µm resonant diode pumping instead of the usual 0.8 µm.
- They achieved a high slope efficiency of up to 80% for Tm:YAP and Tm:YLF, nearing the quantum limit without depending on Tm-Tm cross-relaxation energy transfer.
- The low thermal load enabled stable continuous-wave operation with excellent beam quality and output power reaching up to 6 W for Tm:YAG/Tm:YLF and 8 W for Tm:YAP.
Article Abstract
Solid-state 2 µm lasers based on thulium-doped active media Tm:YAG, Tm:YAP, and Tm:YLF were investigated under 1.7 µm resonant diode pumping. In contrast with standard 0.8 µm pump wavelength, a high slope efficiency was achieved, up to 80% in the case of Tm:YAP and Tm:YLF, nearing a quantum limit without relying on Tm-Tm cross-relaxation energy transfer. Low thermal load allowed for stable continuous-wave operation with good beam quality and output power up to 6 W (Tm:YAG, Tm:YLF), and 8 W (Tm:YAP).
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| http://dx.doi.org/10.1364/OL.495369 | DOI Listing |
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