Divided-Pulse Nonlinear Amplification at 1.5 μm
Divided-pulse nonlinear amplification was developed in the anomalous dispersion regime by combining the concepts of divided-pulse nonlinear amplification and divided-pulse compression. We realized compressor-free ultrafast pulse amplifiers at 1.5 μm with the help of simultaneous pulse amp...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7553574/ |
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| Summary: | Divided-pulse nonlinear amplification was developed in the anomalous dispersion regime by combining the concepts of divided-pulse nonlinear amplification and divided-pulse compression. We realized compressor-free ultrafast pulse amplifiers at 1.5 μm with the help of simultaneous pulse amplification and compression in single-mode and few-mode fibers with anomalous dispersion. With optimized positive prechirping on the seed pulse, the interplay between the dispersive and nonlinear effects was controlled to get transform-limited soliton replicas. Experiments, as well as numerical simulations, demonstrated that ∼0.75 nJ per replica was the optimized results in the 12/130 Er-Yb codoped fiber. By polarization-division multiplexing 32 replicas, transform-limited pulse with 126-fs duration, 20.3-nJ pulse energy, and 80-MHz repetition rate was generated from a few-mode Er-Yb codoped fiber. Furthermore, limitations on the coherent combining efficiency are discussed. |
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| ISSN: | 1943-0655 |