We have recently developed an industrial laser platform emitting in the non-conventional range around 976 nm. This 15 W continuous wave spatially single mode linearly polarized fiber laser can be forced to work in narrow line width or single frequency configuration. Its frequency doubling at 488 nm can be used to replace argon gas laser technology in many applications. We have studied the second harmonic generation of our source to verify its suitability with several industrial application needs in terms of efficiency, temporal stability and noise level.
We demonstrated for the first time three-level operation at 981 nm with a Yb:KYW crystal inserted into the cavity of a
diode pumped Nd:YVO<sub>4</sub> laser operating at 914 nm. We achieved an output power up to 1.4 W at 981 nm. Moreover we
demonstrated that crystal heating favored laser emission at 981 nm rather than emission at higher wavelength.
We present for the first time a frequency doubled Nd:GdVO<sub>4</sub> laser operating in continuous wave on the pure three-level
laser line at 880 nm. We obtained 300 mW at 440 nm for 23 W of incident pump power at 808 nm. Moreover, an output
power of 1.9 W has been obtained at 880 nm.
We present what is, to the best of our knowledge, the first experiment of intracavity pumping at 914 nm of an
Yb:SFAP crystal emitting at 985 nm on the three-level laser transition. This configuration enabled us to indirectly
diode-pump this ytterbium doped crystal, and to obtain 1.4 W output power at 985 nm for 20 W of incident pump
power at 808 nm. Intracavity second harmonic generation has also been demonstrated in a KNbO<sub>3</sub> crystal with a
total of 120 mW linearly polarized output power at 492.5 nm on two output beams.