Three-stage dynamics of nonlinear pulse amplification in ultrafast mid-infrared fiber amplifier with anomalous dispersion
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866929683994509312 |
|---|---|
| author | Sun, Weiyi Huang, Jiapeng Chen, Liming Luo, Zhuozhao Lin, Wei Li, Zeqing Jiang, Cong Huang, Zhiyuan Jiang, Xin Wang, Pengfei Leng, Yuxin Pang, Meng |
| author_facet | Sun, Weiyi Huang, Jiapeng Chen, Liming Luo, Zhuozhao Lin, Wei Li, Zeqing Jiang, Cong Huang, Zhiyuan Jiang, Xin Wang, Pengfei Leng, Yuxin Pang, Meng |
| contents | Nonlinear pulse amplification in optical fiber, with capability of breaking the gain-bandwidth limitation, is a key technique for high-energy, ultrafast pulse generation. In the longer wavelength region (including 1.55 μm, 2 μm and 2.8 μm) where the gain fiber has normally strong anomalous dispersion, the nonlinear amplification process over fiber exhibits more complicated dynamics than that of its 1-μm counterpart, and the underlying mechanism of the nonlinear pulse propagation process in high-gain anomalous fiber is still elusive so far. Here, we demonstrate an in-depth study on the nonlinear amplification process in high-gain ultrafast mid-infrared fiber, providing clear physical understanding on the debate of adiabatic soliton compression. We unveil that under the high-gain condition, the ultrafast pulse launched into the anomalous gain fiber experiences successively three distinct stages, named as the balance between linear and nonlinear chirp, high-order-soliton-like pulse compression and pulse splitting due to high-order effects. While a relatively-clean ultrafast pulse can be obtained immediately after the high-order-soliton-like compression stage, excessive gain fiber length could hardly enhance further the pulse peak power due to soliton splitting. Our findings can provide several critical guidelines for designing high-power ultrafast fiber amplifiers at near- and mid-infrared wavelengths. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_12695 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Three-stage dynamics of nonlinear pulse amplification in ultrafast mid-infrared fiber amplifier with anomalous dispersion Sun, Weiyi Huang, Jiapeng Chen, Liming Luo, Zhuozhao Lin, Wei Li, Zeqing Jiang, Cong Huang, Zhiyuan Jiang, Xin Wang, Pengfei Leng, Yuxin Pang, Meng Optics Nonlinear pulse amplification in optical fiber, with capability of breaking the gain-bandwidth limitation, is a key technique for high-energy, ultrafast pulse generation. In the longer wavelength region (including 1.55 μm, 2 μm and 2.8 μm) where the gain fiber has normally strong anomalous dispersion, the nonlinear amplification process over fiber exhibits more complicated dynamics than that of its 1-μm counterpart, and the underlying mechanism of the nonlinear pulse propagation process in high-gain anomalous fiber is still elusive so far. Here, we demonstrate an in-depth study on the nonlinear amplification process in high-gain ultrafast mid-infrared fiber, providing clear physical understanding on the debate of adiabatic soliton compression. We unveil that under the high-gain condition, the ultrafast pulse launched into the anomalous gain fiber experiences successively three distinct stages, named as the balance between linear and nonlinear chirp, high-order-soliton-like pulse compression and pulse splitting due to high-order effects. While a relatively-clean ultrafast pulse can be obtained immediately after the high-order-soliton-like compression stage, excessive gain fiber length could hardly enhance further the pulse peak power due to soliton splitting. Our findings can provide several critical guidelines for designing high-power ultrafast fiber amplifiers at near- and mid-infrared wavelengths. |
| title | Three-stage dynamics of nonlinear pulse amplification in ultrafast mid-infrared fiber amplifier with anomalous dispersion |
| topic | Optics |
| url | https://arxiv.org/abs/2501.12695 |