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External fibre laser based pulse amplitude equalisation scheme for rational harmonic modelocking in a ring-type fibre laser

External fibre laser based pulse amplitude equalisation scheme for rational harmonic modelocking in a ring-type fibre laser

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The authors have obtained, for the first time to their knowledge, pulse amplitude equalisation in a high repetition rate (up to 22.6 GHz) pulse train, which is generated from rational harmonic modelocking of an Er-doped fibre ring laser, by using an equalising fibre laser. The equalising fibre laser is based on a passively modelocked laser with an NALM (nonlinear amplifying loop mirror) and a Faraday rotating mirror.

Inspec keywords: laser mirrors; laser mode locking; equalisers; erbium; fibre lasers; ring lasers

Other keywords: 22.6 GHz; Faraday rotating mirror; rational harmonic modelocking; ring-type fibre laser; pulse train; nonlinear amplifying loop mirror; equalising fibre laser; repetition rate; pulse amplitude equalisation scheme; external fibre laser

Subjects: Fibre lasers and amplifiers; Design of specific laser systems; Laser beam modulation, pulsing and switching; mode locking and tuning; Fibre lasers and amplifiers

References

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      • M. Nakazawa , E. Yoshida , K. Tamura . 10 GHz, 2 ps regenerativelyand harmonically FM modelocked erbium fibre ring laser. Electron. Lett. , 1285 - 1287
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      • N. Onodera , A.J. Lowery , L. Zhai , Z. Ahmed , R.S. Tucker . Frequency multiplication in actively mode-locked semiconductor lasers. Appl. Phys. Lett. , 1329 - 1331
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      • D. Foursa , P. Emplit , R. Leners , L. Meuleman . 18 GHz from a σ-cavity Er-fibrelaser with dispersion management and rational harmonic active modelocking. Electron. Lett. , 486 - 488
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      • C.R. Doerr , H.A. Haus , E.P. Ippen , M. Shirasaki , K. Tamura . Additive-pulselimiting. Opt. Lett. , 31 - 33
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      • K.H. Kim , M.-Y. Jeon , S.Y. Park , H.K. Lee , E.-H. Lee . Gain dependentoptimum pulse generation rates of a hybrid-type actively and passively mode-lockedfiber laser. ETRI J. , 1 - 14
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