A powerful Yb-doped fiber laser with intra-cavity frequency doubling in KTP nonlinear crystal has been realized.
Green output power of 1 W level has been achieved at ~ 11W of multimode laser diode pump power.
Compact Yb-doped fiber laser (YDFL) based on tunable fiber Bragg grating (FBG) with 6 W output power and 45
nm tuning range around 1080 nm has been developed and studied. The laser output power and its spectral width (-0. 15
nm) do not change significantly at the tuning, while the FBG reflection coefficient is slightly increasing with an increase
in FBG compression. It has been shown that such increase is reasoned by stress-induced changes in FBG's refractiveindex
modulation amplitude.
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