Abstract

In this paper, we report a high power cryogenic cooling Tm(6 at.-%),Ho(0.5 at.-%):YLF laser end-pumped by a 19-fiber-coupled-diodes module with the central wavelength of 792 nm at 20 deg.. The highest continuous-wave power of 3.6 W at 2.051 ?m is attained under pumping power of 13.6 W, corresponding to optical-optical conversion efficiency of 26%, and the slope efficiency is larger than 30%. The threshold power is only about 0.16 W because of the long lifetime, large effective emission cross section, and low re-absorption in Tm,Ho:YLF crystal.

© 2005 Chinese Optics Letters

550 mJ Q-switched cryogenic Ho:YLF oscillator pumped with a 100 W Tm:fiber laser

Helge Fonnum, Espen Lippert, and Magnus W. Haakestad
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Pulsed Ho:YLF laser intra-cavity pumped by a diode-pumped Q-switched Tm:YAP laser

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Opt. Express 32(7) 11387-11394 (2024)