In this work, we demonstrate an architecture to perform Raman-based power combining and simultaneous wavelength conversion of two independently controlled high-power Ytterbium doped fiber lasers operating at different wavelengths into a single laser line at the 1.5-micron band. Specifically, we have been able to achieve an in-band output power of ∼99W with a conversion of ∼64% of the quantum limited efficiency. This power combining is illustrated for different cases of the input wavelengths of the Ytterbium fiber laser. In each case, we have been able to demonstrate a power combining of >87 W in the final 1.5-micron band, with more than 85% of the fraction of the power residing in the final desired band.
Santosh Aparanji, V. Balaswamy, S. Arun, and V. R. Supradeepa, "Raman based power combining and wavelength conversion of high power ytterbium fiber lasers," Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105121U (Presented at SPIE LASE: February 01, 2018; Published: 26 February 2018); https://doi.org/10.1117/12.2290347.
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