Two-Step Excitation Triggered by One-Photon Absorption on Linear Dispersion in Monolayer Graphene

Takeshi Koyama, Kenta Mizutani, Hiroki Ago, Hideo Kishida

    研究成果: Contribution to journalArticle査読

    1 被引用数 (Scopus)

    抄録

    We report the decrease in absorption caused by a near-infrared laser pulse in the visible region in monolayer graphene. This absorption decrease shows the existence of a two-step excitation process of carriers, in which one-photon absorption and Auger recombination sequentially occur. This process results from the linear dispersion nature of monolayer graphene. In addition, the monolayer graphene shows the ultrafast decay of carrier population. The observed properties are of importance for ultrafast optical switching utilizing the optical nonlinearity induced by carrier excitation.

    本文言語英語
    ページ(範囲)11225-11229
    ページ数5
    ジャーナルJournal of Physical Chemistry C
    120
    20
    DOI
    出版ステータス出版済み - 5 26 2016

    All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • エネルギー(全般)
    • 物理化学および理論化学
    • 表面、皮膜および薄膜

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