What is it about?

Semiconductor transition metal dichalcogenides are an important class of 2D materials for the miniaturization of future electronic devices due to their unique properties. For optical applications, understanding the limitations of these materials is important to optimize their performance for such devices. This paper examines the optical limitations and defects of these materials when excited by ultrafast pulses.

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Why is it important?

The findings presented here show that semiconducting 2D materials, specifically MoS2, are some of the most optically robust materials and are able to resist optical damage when exposed to multiple intense pulses. Additionally, the onset of optical damage results in nano-size holes that significantly modify the optical properties of the material. This result demonstrates the applicabiity of these materials for applications requiring intense optical pulses.


Two-dimensional materials including both graphene and transition metal dichalcogenides (TMDs) have been widely studied in recent years. While the ultrafast laser ablation of graphene has been extensively studied, little has been reported for TMDs which is surprising given the immense applicability of these materials. I hope this article helps address this knowledge gap and promotes future studies investigating the optical breakdown of these materials.

Joel Solomon

Read the Original

This page is a summary of: Ultrafast multi-shot ablation and defect generation in monolayer transition metal dichalcogenides, AIP Advances, January 2022, American Institute of Physics, DOI: 10.1063/5.0078054.
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