Femtosecond ytterbium fiber laser with photonic crystal fiber for dispersion control.
We demonstrate the use of photonic-crystal fiber for dispersion compensation in a soliton fiber laser. The anomalous dispersion provided by the photonic-crystal fiber enables us to construct a femtosecond .ber laser at 1 microm wavelength without prisms or diffraction gratings. The laser produces ~100-fs pulses with 1 nJ energy, and is a major step toward environmentally-stable all-fiber devices at 1 microm.
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