Second harmonic generation from graphene and graphitic films

被引：162

作者：

Dean, Jesse J. ^{[1
]}

van Driel, Henry M.

机构：

[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 26期

基金：

加拿大自然科学与工程研究理事会;

关键词：

graphene; graphite; multilayers; optical harmonic generation; thin films; SYSTEMS;

D O I：

10.1063/1.3275740

中图分类号：

O59 [应用物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Optical second harmonic generation (SHG) of 800 nm, 150 fs fundamental pulses is observed from exfoliated graphene and multilayer graphitic films mounted on an oxidized silicon (001) substrate. The SHG anisotropy is observed as a sample is rotated about the surface normal. For p-polarized fundamental and SHG light, the isotropic SHG from a graphene layer only slightly interferes with the fourfold symmetric response of the underlying substrate, while other samples show a threefold symmetry characteristic of significant SHG in the multilayer graphitic films. The dominance of the threefold anisotropy is maintained from bilayer graphene to bulk graphite.

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页数：3

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