Two-photon absorption towards pulse modulation in mechanically exfoliated and CVD monolayer cascaded MoS2 structures

Yafeng Xie; Saifeng Zhang; Xiaoyan Zhang; Ningning Dong; Ivan M. Kislyakov; Song Luo; Zhanghai Chen; Jean-Michel Nunzi; Long Zhang; Jun Wang

doi:10.3788/COL201917.081901

Journals >Chinese Optics Letters >Volume 17 >Issue 8 >Page 081901 > Article

Chinese Optics Letters
Vol. 17, Issue 8, 081901 (2019)

Two-photon absorption towards pulse modulation in mechanically exfoliated and CVD monolayer cascaded MoS₂ structures

Yafeng Xie^1、2, Saifeng Zhang^1、**, Xiaoyan Zhang¹, Ningning Dong¹, Ivan M. Kislyakov¹, Song Luo³, Zhanghai Chen³, Jean-Michel Nunzi^1、4, Long Zhang¹, and Jun Wang^1、5、*

Author Affiliations

¹Laboratory of Micro-Nano Photonic and Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures of Ministry of Education, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China

⁴Department of Physics, Engineering Physics & Astronomy and Department of Chemistry, Queen’s University, Kingston K7L-3N6, Ontario, Canada

⁵State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

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DOI: 10.3788/COL201917.081901 Cite this Article Set citation alerts

Yafeng Xie, Saifeng Zhang, Xiaoyan Zhang, Ningning Dong, Ivan M. Kislyakov, Song Luo, Zhanghai Chen, Jean-Michel Nunzi, Long Zhang, Jun Wang. Two-photon absorption towards pulse modulation in mechanically exfoliated and CVD monolayer cascaded MoS₂ structures[J]. Chinese Optics Letters, 2019, 17(8): 081901 Copy Citation Text

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Abstract

Mechanical exfoliation (ME) and chemical vapor deposition (CVD) MoS₂ monolayers have been extensively studied, but the large differences of nonlinear optical performance between them have never been clarified. Here, we prepared MoS₂ monolayers using ME and CVD methods and investigated the two-photon absorption (TPA) response and its saturation. We found that the TPA coefficient of the ME monolayer was about (1.88 ± 0.21) × 10³ cm/GW, nearly two times that of the CVD one at (1.04 ± 0.15) × 10³ cm/GW. Furthermore, we simulated and compared the TPA-induced optical pulse modulation in multilayer cascaded structures, which is instructive and meaningful for the design of optical devices such as a beam shaper and optical limiter.