Abstract
We demonstrate a linearly polarized random distributed feedback Raman fiber laser with record 86.3 W output power with a piece of 157 m long polarization maintaining (PM) fiber. The maximum optical efficiency of first-order-Stocks light at 1120 nm reaches ~74% while pumping at 1070 nm. The full width at half maximum (FWHM) at maximum output power is ~2 nm and the polarization extinction ratio (PER) is measured to be as high as 22 dB. To the best of our knowledge, this is the highest output power for linearly-polarized random fiber laser.
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