Please use this identifier to cite or link to this item:
https://doi.org/10.1364/OE.26.016093
Title: | Two-photon absorption arises from two-dimensional excitons | Authors: | Zhou, F. Kua, J.H. Lu, S. Ji, W. |
Issue Date: | 2018 | Publisher: | OSA - The Optical Society | Citation: | Zhou, F., Kua, J.H., Lu, S., Ji, W. (2018). Two-photon absorption arises from two-dimensional excitons. Optics Express 26 (13) : 16093-16101. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.26.016093 | Rights: | Attribution 4.0 International | Abstract: | By applying quantum perturbation theory to two-dimensional excitons in monolayer transition metal dichalcogenides (TMDCs), we develop a theoretical model for two-photon absorption in the near infrared spectral region. By assuming the bandwidth of the final excitonic state to be 0.15 eV, the two-photon absorption coefficients are as high as 50 cm/MW and selenium-based, monolayer TMDCs exhibit greater 2PA coefficients than sulfur-based, monolayer TMDCs. Our model is also compared to the experimental data obtained by Z-scans or nonlinear transmission measurements. © 2018 Optical Society of America. | Source Title: | Optics Express | URI: | https://scholarbank.nus.edu.sg/handle/10635/212543 | ISSN: | 1094-4087 | DOI: | 10.1364/OE.26.016093 | Rights: | Attribution 4.0 International |
Appears in Collections: | Staff Publications Elements |
Show full item record
Files in This Item:
File | Description | Size | Format | Access Settings | Version | |
---|---|---|---|---|---|---|
10_1364_OE_26_016093.pdf | 2.32 MB | Adobe PDF | OPEN | None | View/Download |
This item is licensed under a Creative Commons License