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The power scaling of linearly polarized random fiber lasers (RFLs) is investigated in detail based on master oscillator power amplifier configuration. A 442-W linearly polarized output with a narrow 3-dB linewidth of 0.28 nm and a 621-W linearly polarized output with a relatively wider 3-dB linewidth of 2.7 nm are realized. Besides, near-diffraction-limited beam quality and high polarization extinction...
Unlike traditional fiber laser with defined resonant cavity, random fiber laser (RFL), whose operation is based on distributed gain and feedback via Rayleigh scattering and stimulated Raman scattering in long passive fiber, has fundamental scientific challenges in pulsing operation for its remarkable cavity-free feature. Here, we propose and experimentally realize the passively spatiotemporal gain...
We propose and experimentally investigate a linearly-polarized narrow linewidth random fiber laser (RFL) operating at 1080 nm and boost the output power to kilowatt-level with near-diffraction-limited beam quality by a master-oscillation-power-amplifier (MOPA) configuration. The RFL based on half-opened cavity generates 0.71 W seed laser with 88 pm full width at half-maximum (FWHM) linewidth and 22...
Two mode-locked femtosecond fiber lasers, connected via a 7 km fiber link, are synchronized to an RMS timing jitter of 19 fs, observed over the entire Nyquist bandwidth (half of the repetition frequency of 100 MHz).
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