Controlling the spontaneous emission rate of monolayer MoS[subscript 2] in a photonic crystal nanocavity

Controlling the spontaneous emission rate of monolayer MoS[subscript 2] in a photonic crystal nanocavity

We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS[subscript 2]) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolved photoluminescence (PL) mapping shows strong variations of emission when the MoS[subscript 2] monolayer is on...

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Bibliographic Details
Main Authors: Gan, Xuetao, Gao, Yuanda, Fai Mak, Kin, Yao, Xinwen, Shiue, Ren-Jye, van der Zande, Arend, Trusheim, Matthew E., Hatami, Fariba, Heinz, Tony F., Hone, James, Englund, Dirk Robert
Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Format: Article
Language:en_US
Published: American Institute of Physics (AIP) 2014
Online Access:http://hdl.handle.net/1721.1/86153
https://orcid.org/0000-0001-7902-3456
https://orcid.org/0000-0002-4363-3081
Description
Summary:We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS[subscript 2]) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolved photoluminescence (PL) mapping shows strong variations of emission when the MoS[subscript 2] monolayer is on the PPC cavity, on the PPC lattice, on the air gap, and on the unpatterned gallium phosphide substrate. Polarization dependences of the cavity-coupled MoS[subscript 2] emission show a more than 5 times stronger extracted PL intensity than the un-coupled emission, which indicates an underlying cavity mode Purcell enhancement of the MoS[subscript 2] SE rate exceeding a factor of 70.

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