Publication

Excitonic Emission of Monolayer Semiconductors Near-Field Coupled to High-Q Microresonators

Tobias Kippenberg, Clément Christian Javerzac, Ryan Daniel Schilling, Nicolas Piro Mastracchio
2018
Journal Articles

Abstract

We present quantum yield measurements of single layer WSe2 (1L-WSe2) integrated with high-Q (Q > 106) optical microdisk cavities, using an efficient (η > 90%) near-field coupling scheme based on a tapered optical fiber. Coupling of the excitonic emission is achieved by placing 1L-WSe2 in the evanescent cavity field. This preserves the microresonator high intrinsic quality factor (Q > 106) below the bandgap of 1L-WSe2. The cavity quantum yield is QYc ≈ 10–3, consistent with operation in the broad emitter regime (i.e., the emission lifetime of 1L-WSe2 is significantly shorter than the bare cavity decay time). This scheme can serve as a precise measurement tool for the excitonic emission of layered materials into cavity modes, for both in plane and out of plane excitation.

Official source

https://infoscience.epfl.ch/entities/publication/4ab842d7-d00b-4549-a409-0297e6d79654

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Tobias Kippenberg, Clément Christian Javerzac, Ryan Daniel Schilling, Nicolas Piro Mastracchio
2018
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4ab842d7-d00b-4549-a409-0297e6d79654

About this result

Related concepts (32)

Measurement in quantum mechanics

In quantum physics, a measurement is the testing or manipulation of a physical system to yield a numerical result. A fundamental feature of quantum theory is that the predictions it makes are probabilistic. The procedure for finding a probability involves combining a quantum state, which mathematically describes a quantum system, with a mathematical representation of the measurement to be performed on that system. The formula for this calculation is known as the Born rule.

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