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A high power 1178nm Yb-doped photonic bandgap fiber laser is reported. A fiber Bragg grating and a Fresnel fiber end construct the resonator. 98W output power and 54% slope efficiency are achieved without parasitic lasing.
We report a high power single-frequency 1178 nm laser combining an optically-pumped semiconductor disk laser and an Yb-doped photonic bandgap fiber amplifier. An output power of 31 W with <200 kHz linewidth without SBS was demonstrated.
We report Yb-doped photonic bandgap fiber amplifier generating 19 kW nanosecond pulses without stimulated Raman scattering by long-wavelength cut distributed filtering. Modulation instability due to the huge anomalous waveguide dispersion around the cutoff was observed.
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