We report a ReSe2 passively mode-locked composite YVO4/Nd:YVO4 laser at 1.06 μm, which can stably generate pure continuous-wave mode-locking (CWML) operation at watt-level output. ReSe2, as a new type of 2-D transition metal dichalcogenides (TMDs), has the features of weak-layered dependence, broadband saturable absorption, low modulation depth and saturation intensity, which is beneficial to initiate robust CWML mechanism via nonlinear saturable absorption. By employing few-layered ReSe2 as saturable absorber, the nanosecond mode-locked pulses at fundamental repetition rate of 90.37 MHz was obtained experimentally in a composite YVO4/Nd:YVO4 laser. The maximum output power in pure CWML operation was as high as 1.1 W. The high-power CWML laser source shows potential applications in time-resolved spectroscopy, telecommunication and detection.

中文翻译：

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具有 ReSe2 可饱和吸收体的瓦特级连续波锁模 Nd:YVO4 激光器

我们报告了一种 1.06 μm 的 ReSe2 被动锁模复合 YVO4/Nd:YVO4 激光器，它可以在瓦特级输出下稳定地产生纯连续波锁模 (CWML) 操作。ReSe2作为一种新型的二维过渡金属二硫属化物（TMDs），具有弱分层依赖性、宽带可饱和吸收、低调制深度和饱和强度等特点，有利于通过非线性可饱和吸收启动稳健的CWML机制。通过采用少层ReSe2作为可饱和吸收体，在复合YVO4/Nd:YVO4激光器中实验获得了基本重复率为90.37 MHz的纳秒锁模脉冲。纯 CWML 操作的最大输出功率高达 1.1 W。高功率 CWML 激光源在时间分辨光谱、电信和检测方面显示出潜在的应用。