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An erbium fiber oscillator with dominating gain fiber length and an intracavity pulse shaper is experimentally demonstrated. The Kerr nonlinear phase shift induced in the fibers is suppressed by the pulse shaper, enabling high-energy (8.9 nJ) high-compression efficiency (93%) pulses of less than 270 fs duration (after linear dechirping) at modest (320 mW) pump power. A stably mode-locked spectrum...
The feasibility to achieve large-scale spectral compression of an all-normal dispersion fiber laser in a dispersion-increasing fiber is studied both numerically and experimentally. Experimentally, a record-high spectral compression ratio of 46.7 is achieved.
Tunable intracavity phase modulation is applied to an all normal dispersion fiber oscillator to suppress wave-breaking and increase the pulse energy. Spectral broadening beyond 1200–2000nm is achieved by 15-m-long high nonlinear fiber.
We experimentally demonstrated an all normal dispersion erbium-doped fiber oscillator, producing pulses of 121 fs, 3.8 nJ at 1562 nm. The central wavelength and bandwidth are tunable by using an intracavity Fourier transform pulse shaper.
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