Abstract
A 4-pass structure Er:YAG MOPA system at 1645 nm is theoretically and experimentally investigated. In accordance with the theoretical analysis, the 4-pass structure significantly improved the amplification performance. The highest gain is about 4 with 1 mJ incident seed energy. The power fluctuation and beam quality are improved after the amplification.
| Original language | English |
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| Pages (from-to) | 15424-15431 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 28 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 11 May 2020 |