Widely-wavelength-tunable few-cycle optical pulse generation from an all-fiber erbium-doped laser system |
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Authors: | A. V. Andrianov S. V. Muraviev A. V. Kim A. A. Sysoliatin |
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Affiliation: | 1. Institute of Applied Physics, Russian Academy of Sciences, Nizhi Novgorod, 603950, Russia 2. Fiber Optics Research Center, Russian Academy of Sciences, Moscow, 119333, Russia
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Abstract: | A scheme for the construction of fiber laser systems for the generation of tunable ultrashort optical pulses is proposed. The scheme is based on the self-Raman shift of the soliton frequency in dispersion-decreasing fibers with the subsequent spectral broadening owing to the supercontinuum generation in a short highly nonlinear fiber and the compression in the corresponding fiber compressor. An all-fiber laser system for the generation of ultrashort laser pulses in the wavelength range 1.6–2.0 μm is experimentally demonstrated. In particular, the shortest pulses with a duration of 24 fs are generated at wavelengths of 1.8–1.9 μm, which corresponds to less than four optical cycles. |
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