Abstract We have successfully applied intermode beating mode-locking (IBML) for short pulse generation in compact Tm3+-doped double clad fiber lasers (TDFLs). This IBML technique is implemented by longitudinal-mode frequency matching between pump source and laser oscillator without extra mode-locker. Here, the achieved IBML TDFLs can respectively generate 2056.47 nm, 2003.88 nm and 1963.79 nm short pulses. Their output characteristics have been respectively investigated. The IBML technique enables the large pulse energy of ~20.8 nJ with pulse repetition rate of ~9.6 MHz. This work may open a new route for next-generation of high performance mid-infrared short-pulse all-fiber laser sources.

中文翻译：

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模间跳动锁模：迈向紧凑型 2 µm 短脉冲全光纤激光器

摘要 我们已成功地将模间拍频锁模 (IBML) 应用于紧凑型 Tm3+ 掺杂双包层光纤激光器 (TDFL) 中的短脉冲生成。这种 IBML 技术是通过泵浦源和激光振荡器之间的纵模频率匹配来实现的，无需额外的锁模器。在这里，实现的 IBML TDFL 可以分别产生 2056.47 nm、2003.88 nm 和 1963.79 nm 的短脉冲。分别研究了它们的输出特性。IBML 技术可实现 ~20.8 nJ 的大脉冲能量和 ~9.6 MHz 的脉冲重复率。这项工作可能为下一代高性能中红外短脉冲全光纤激光源开辟一条新途径。