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Quasi-Three-Level Yb:Cn Laser at 978 Nm and the Second-Harmonic Generation
Y. Li, B. Liu, J. Wang, L. Gao1, W. Zhou, S. Wang, S. Li and Y. Huo

We present what is, to the best of our knowledge, the first diode-pumped Yb:CaNb2O6 laser emitting at 978 nm. The use of a pump module at 940 nm allowed the realization of an Yb:CaNb2O6 thin disk laser with 1.14 W of continuous wave (CW) output power at 978 nm. Moreover, intra-cavity second-harmonic generation (SHG) in CW mode has also been demonstrated with a power of 151 mW at 489 nm by using a LiB3O5(LBO) nonlinear crystal. The beam quality factor M2 is 1.11 for the tangential direction and 1.13 for the sagittal direction.

Keywords: Yb-CN laser, thin-disk laser, Yb:CN crystal, 978 nm, continuous wave (CW), diode-pumped, quasi-three-level, second-harmonic generation (SHG)

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