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Figure 6 | Nanoscale Research Letters

Figure 6

From: Graphene-based optical modulators

Figure 6

Processes of saturable absorption in graphene. (a) Optical interband transition excited by incident light. (b) The photogenerated carriers redistribute a Fermi-Dirac distribution. (c) Further absorption is blocked under sufficient intensity of incident light. Reproduced from ref. [50].

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