Enhanced nonlinear optical limiting in TiS2 dichalcogenide 2D Sheets

Jitesh Kumar; Sreekanth J. Varma; Yang Liu; Katherine Layne; Jingjie Wu; Chenglu Liang; Yusuke Nakanishi; Amir Aliyan; Wei Yang; Pulickel M. Ajayan; Jayan Thomas

doi:10.1117/12.2275631

25 August 2017 Enhanced nonlinear optical limiting in TiS₂ dichalcogenide 2D sheets

Jitesh Kumar; Sreekanth J. Varma; Yang Liu; Katherine Layne; Jingjie Wu; Chenglu Liang; Yusuke Nakanishi; Amir Aliyan; Wei Yang; Pulickel M. Ajayan; Jayan Thomas

Author Affiliations +

Proceedings Volume 10360, Light Manipulating Organic Materials and Devices IV; 103600A (2017) https://doi.org/10.1117/12.2275631
Event: SPIE Organic Photonics + Electronics, 2017, San Diego, California, United States

Abstract

Two dimensional (2D) graphene and transition metal dichalcogenides are an emerging class of extremely interesting materials showing unique physical properties, such as large third-order optical nonlinearity, offering potential applications in optical limiting. Here we report the optical limiting properties of Titanium disufide (TiS₂), and Graphene sheets measured using open aperture and photo-acoustic z-scan techniques. Our best results were observed in TiS₂ Sheets, yielding an optical limiting of 77% at an irradiance of 0.713 GW/cm²with 2PA and 3PA absorption coefficient to be 80cm/GW and 2000 cm³/GW² respectively.Also, TiS₂ sheets show improved shelf life and stability upon irradiation with higher laser powers. This demonstrates the feasibility of using them as a potential candidate for optical limiting applications.

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Jitesh Kumar, Jitesh Kumar, Sreekanth J. Varma, Sreekanth J. Varma, Yang Liu, Yang Liu, Katherine Layne, Katherine Layne, Jingjie Wu, Jingjie Wu, Chenglu Liang, Chenglu Liang, Yusuke Nakanishi, Yusuke Nakanishi, Amir Aliyan, Amir Aliyan, Wei Yang, Wei Yang, Pulickel M. Ajayan, Pulickel M. Ajayan, Jayan Thomas, Jayan Thomas, } "Enhanced nonlinear optical limiting in TiS₂ dichalcogenide 2D sheets", Proc. SPIE 10360, Light Manipulating Organic Materials and Devices IV, 103600A (25 August 2017); doi: 10.1117/12.2275631; https://doi.org/10.1117/12.2275631

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