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首页> 外文期刊>Advanced Optical Materials >Alternately Intercalated Heterostructures of Carbon and MoS_2 Monolayers as Saturable Absorber for Ultrashort Femtosecond Mode-Locked Lasers
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Alternately Intercalated Heterostructures of Carbon and MoS_2 Monolayers as Saturable Absorber for Ultrashort Femtosecond Mode-Locked Lasers

机译：交替地嵌入碳和MOS_2单层的异质结构，作为超短飞秒锁定激光器的可饱和吸收器

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摘要

2D van der Waals (VDWs) heterostructures have attracted much attention due to their exotic electronic and optical properties, which provide a new platform for material science and device fabrication. In this work, by coupling atomic interface engineering, an alternately intercalated superstructure of carbon and MoS2 monolayers (m-C/MoS2) is designed as a novel saturable absorber (SA) for mode-locked ultrafast laser generation. The novel intercalated structures exhibit excellent properties including wide bandgap, fast inter- and intra-band carrier relaxation time, and superior saturable absorption characteristic, etc. Consequently, a continuous wave mode-locked Yb:CALGO bulk laser with pulse width as short as 92 fs is achieved by using the prepared m-C/MoS2 SA mirror, which is much shorter than those obtained with other reported 2D materials. This study provides a valuable strategy for the development of ultrashort pulse femtosecond lasers. The novel VDWs heterostructures also open new avenues toward advanced photonic devices.
机译：2D van der Waals（VDWS）异质结构由于其异国情调的电子和光学性能而引起了很多关注，这为材料科学和设备制造提供了新的平台。在这项工作中，通过耦合原子界面工程，替代地插入的碳和MOS2单层（M-C / MOS2）的上部结构被设计为用于模式锁定超速激光生成的新型可饱和吸收器（SA）。新颖的插层结构表现出优异的性能，包括宽带隙，快速和带内载波弛豫时间和卓越的可饱和吸收特性等。因此，连续波模式锁定的Yb：脉冲宽度短至92的脉冲宽度激光器通过使用制备的MC / MOS2 SA镜子实现FS，这比用其他报告的2D材料获得的比那么短。本研究为超短脉冲飞秒激光器的开发提供了有价值的策略。新颖的VDWS异质结构也开辟了向高级光子器件开辟了新的途径。

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