Abstract.
We demonstrate that Yb-doped Ca4GdO(BO3)3 (GdCOB) crystals are suitable for the development of high-power diode-pumped lasers emitting at around 1.04 μm. A 15%-doped Yb:GdCOB crystal was longitudinally pumped with a cw fiber-coupled diode emitting 10 W at 976 nm. While 5.2 W of diode power was absorbed, we obtained 3.2 W of 1043-μm laser light, with a beam quality factor M2 equal to 3, and 2.5 W in a diffraction-limited beam. Furthermore, the laser is continuously tunable between 1018 and 1086 nm. Thermal effects have been investigated with a Shack–Hartmann wavefront analyser: although thermal lensing is not negligible, it does not affect the performance of the laser with the resonator design we used.
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Received: 1 August 2000 / Revised version: 18 September 2000 / Published online: 21 February 2001
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Chénais, S., Druon, F., Balembois, F. et al. Multiwatt, tunable, diode-pumped CW Yb:GdCOB laser . Appl Phys B 72, 389–393 (2001). https://doi.org/10.1007/s003400100477
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DOI: https://doi.org/10.1007/s003400100477