Continuum suppressed, uniformly repetitive 136 fs pulse generation from an erbium-doped fibre laser with nonlinear polarisation rotation |
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| Authors: | Nakazawa M Yoshida E Sugawa T Kimura Y |
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| Affiliation: | NTT Telecommun. Field Syst. R&D Centr. Ibaraki, Japan; |
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| Abstract: | A new type of femtosecond erbium-doped fibre laser with nonlinear polarisation rotation is presented, in which a polariser is installed at a point-symmetric position against a polarisation-sensitive optical isolator in the ring laser cavity. This technique enables one to remove the continuum (DC component) in the oscillation waveform completely and to obtain a stable pulse train as short as 136-145 fs with a 56 MHz repetition rate.<> |
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