Thickness-dependent ultrafast photonics of SnS2 nanolayers for optimizing fiber lasers
Thickness-dependent ultrafast photonics of SnS2 nanolayers for optimizing fiber lasers
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用于优化光纤激光器的 SnS2 纳米层厚度相关超快光子学
DOI：
10.1021/acsanm.9b00190
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发表时间：
2019
影响因子：
5.9
通讯作者：
Wei Zhiyi
中科院分区：
文献类型：
--
作者：
Liu Wenjun;Liu Mengli;Wang Xiaoting;Shen Tao;Chang Guoqing;Lei Ming;Deng Huixiong;Wei Zhongming;Wei Zhiyi
不同厚度的过渡金属二卤化物(TMDCs)对光子器件的性能有很大的影响。然而，如何准确地控制TMDCs的层数，实现TMDCs在超快光子学中的应用，仍然是一个具有挑战性的问题。在这里，我们研究了一种新的TMDCs--SnS_2的超快光子学的厚度依赖关系。用化学气相输运技术合成了SnS2晶体，并通过第一性原理计算确定其为n型材料。作为一种潜在的应用，三种不同厚度的SnS2样品被成功地应用于光纤激光器。通过不同的激光性能，说明了SnS2厚度依赖关系的重要性和有效性。结果表明，SnS2具有良好的光学性能，厚度可控，有望在电子学、光学和传感器等领域得到应用。
Transition metal dichalcogenides (TMDCs) with different thickness can greatly influence the performance of photonic devices. However, how to accurately control the layers of TMDCs and realize the application of TMDCs in ultrafast photonics remains challenging. Here, we study the thickness dependence of ultrafast photonics of SnS2, which is one of newly emerging TMDCs. The SnS2crystals are synthesized by the chemical vapor transport technique and confirmed as the n-type material by first-principles calculations. As a potential application, SnS2samples with three different thickness are successfully applied in fiber lasers. The importance and effectiveness of thickness dependence of SnS2are demonstrated by different laser performance. Results indicate that SnS2has excellent optical properties with controllable thickness and may be beneficial for the applications of electronics, optics, and sensors.