Special Section on 2-D Materials for Optics and Photonics

Layer-to-layer compression and enhanced optical properties of few-layer graphene nanosheet induced by ion irradiation

[+] Author Affiliations
Zhen Shang, Yang Tan, Feng Chen

Shandong University, School of Physics, State Key Laboratory of Crystal Materials, Jinan 250100, China

Shengqiang Zhou

Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam and Materials Research, Dresden 01314, Germany

Opt. Eng. 55(8), 081303 (Dec 14, 2015). doi:10.1117/1.OE.55.8.081303
History: Received September 23, 2015; Accepted November 3, 2015
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Abstract.  We report on the first experimental study of the layer-to-layer compression and enhanced optical properties of few-layer graphene nanosheet by applying ion irradiation. The deformation of graphene layers is investigated both theoretically and experimentally. It is observed that after the irradiation of energetic ion beams, the space between separate graphene layers is reduced due to layer-to-layer compression, resulting in tighter contact of the graphene sheet with the surface of the substrate. This processing enables enhanced interaction of the graphene with the evanescent-field wave near the surface, which induces reinforced polarization-dependent light absorption of the graphene. Utilizing the ion-bombarded graphene nanosheets as saturable absorbers, we have realized efficient Q-switched waveguide lasing with enhanced performance through the interaction of the graphene and evanescent field.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Zhen Shang ; Yang Tan ; Shengqiang Zhou and Feng Chen
"Layer-to-layer compression and enhanced optical properties of few-layer graphene nanosheet induced by ion irradiation", Opt. Eng. 55(8), 081303 (Dec 14, 2015). ; http://dx.doi.org/10.1117/1.OE.55.8.081303


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