Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/138361
Title: MoS2 for ultrafast all-optical switching and modulation of THz fano metaphotonic devices
Authors: Srivastava, Yogesh Kumar
Chaturvedi, Apoorva
Manjappa, Manukumara
Kumar, Abhishek
Dayal, Govind
Kloc, Christian
Singh, Ranjan
Keywords: Science::Physics
Issue Date: 2017
Source: Srivastava, Y. K., Chaturvedi, A., Manjappa, M., Kumar, A., Dayal, G., Kloc, C., & Singh, R. (2017). MoS2 for ultrafast all-optical switching and modulation of THz fano metaphotonic devices. Advanced Optical Materials, 5(23), 1700762-. doi:10.1002/adom.201700762
Project: MOE2011‐T3‐1‐005
MOE2015‐T2‐2‐103
Journal: Advanced Optical Materials
Abstract: In recent years, the stunning performance of transition metal dichalcogenides (TMDCs) has been utilized in the area of field effect transistors, integrated circuits, photodetectors, light generation and harvesting, valleytronics, and van der Waals (vdW) heterostructures. However, the optoelectronic application of TMDCs in realizing efficient, ultrafast metaphotonic devices in the terahertz part of the electromagnetic spectrum has remained unexplored. The most studied member of the TMDC family, i.e., MoS2, shows an ultrafast carrier relaxation after photoexcitation with near-infrared femtosecond pulse of energy above the bandgap. Here, this study investigates the photoactive properties of MoS2 to demonstrate an ultrasensitive active switching and modulation of the sharp Fano resonances in MoS2-coated metamaterials consisting of asymmetric split ring resonator arrays. The results show that all-optical switching and modulation of micrometer scale subwavelength Fano resonators can be achieved on a timescale of hundred picoseconds at moderate excitation pump fluences. The precise and active control of the MoS2-based hybrid metaphotonic devices open up opportunities for the real-world technologies and realization of ultrafast switchable sensors, modulators, filters, and nonlinear devices.
URI: https://hdl.handle.net/10356/138361
ISSN: 2195-1071
DOI: 10.1002/adom.201700762
DOI (Related Dataset): https://doi.org/10.21979/N9/K3QYIF
Schools: School of Materials Science & Engineering 
School of Physical and Mathematical Sciences 
Rights: This is the peer reviewed version of the following article: Srivastava, Y. K., Chaturvedi, A., Manjappa, M., Kumar, A., Dayal, G., Kloc, C., & Singh, R. (2017). MoS2 for ultrafast all-optical switching and modulation of THz fano metaphotonic devices. Advanced Optical Materials, 5(23), 1700762. doi:10.1002/adom.201700762, which has been published in final form at 10.1002/adom.201700762. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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