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

Zhen Shang; Yang Tan; Shengqiang Zhou; Feng Chen

doi:10.1117/1.OE.55.8.081303

14 December 2015 Layer-to-layer compression and enhanced optical properties of few-layer graphene nanosheet induced by ion irradiation

Zhen Shang, Yang Tan, Shengqiang Zhou, Feng Chen

Author Affiliations +

Optical Engineering, Vol. 55, Issue 8, 081303 (December 2015). https://doi.org/10.1117/1.OE.55.8.081303

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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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," Optical Engineering 55(8), 081303 (14 December 2015). https://doi.org/10.1117/1.OE.55.8.081303

Published: 14 December 2015

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