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arXiv · 1310.0923

Controlling the Spontaneous Emission Rate of Monolayer MoS$_2$ in a Photonic Crystal Nanocavity

Xuetao Gan·Yuanda Gao·Kin Fai Mak·Xinwen Yao·Ren-Jye Shiue·Arend van der Zande·Matthew 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 (MoS$_2$) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolved photoluminescence (PL) mapping shows strong variations of emission when the MoS$_2$ 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$_2$ 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 MoS$_2$ SE rate exceeding a factor of 70.

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Xuetao Gan, Yuanda Gao, Kin Fai Mak, Xinwen Yao, Ren-Jye Shiue, Arend van der Zande, Matthew Trusheim, Fariba Hatami, Tony F. Heinz, James Hone, Dirk Englund. 2013-10-03. Controlling the Spontaneous Emission Rate of Monolayer MoS$_2$ in a Photonic Crystal Nanocavity. https://doi.org/10.1063/1.4826679

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