Controlling the spontaneous emission rate of monolayer MoS2 in a photonic crystal nanocavity

Xuetao Gan, Yuanda Gao, Kin Fai Mak, Xinwen Yao, Ren Jye Shiue, Arend Van Der Zande, Matthew E. Trusheim, Fariba Hatami, Tony F. Heinz, James Hone, Dirk Englund

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Abstract

We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS2) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolved photoluminescence (PL) mapping shows strong variations of emission when the MoS2 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 MoS2 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 MoS2 SE rate exceeding a factor of 70.

Original languageEnglish (US)
Article number181119
JournalApplied Physics Letters
Volume103
Issue number18
DOIs
StatePublished - Oct 28 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Gan, X., Gao, Y., Fai Mak, K., Yao, X., Shiue, R. J., Van Der Zande, A., Trusheim, M. E., Hatami, F., Heinz, T. F., Hone, J., & Englund, D. (2013). Controlling the spontaneous emission rate of monolayer MoS2 in a photonic crystal nanocavity. Applied Physics Letters, 103(18), [181119]. https://doi.org/10.1063/1.4826679