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Destructive Photon Echo Formation in Six‐Wave Mixing Signals of a MoSe2 Monolayer
Monolayers of transition metal dichalcogenides display a strong excitonic optical response. Additionally encapsulating the monolayer with hexagonal boron nitride allows to reach the limit of a purely homogeneously broadened exciton system. On such a MoSe2‐based system, ultrafast six‐wave mixing spectroscopy is performed and a novel destructive photon echo effect is found. This process manifests as a characteristic depression of the nonlinear signal dynamics when scanning the delay between the applied laser pulses. By theoretically describing the process within a local field model, an excellent agreement with the experiment is reached. An effective Bloch vector representation is developed and thereby it is demonstrated that the destructive photon echo stems from a destructive interference of successive repetitions of the heterodyning experiment.
Destructive Photon Echo Formation in Six‐Wave Mixing Signals of a MoSe2 Monolayer
Monolayers of transition metal dichalcogenides display a strong excitonic optical response. Additionally encapsulating the monolayer with hexagonal boron nitride allows to reach the limit of a purely homogeneously broadened exciton system. On such a MoSe2‐based system, ultrafast six‐wave mixing spectroscopy is performed and a novel destructive photon echo effect is found. This process manifests as a characteristic depression of the nonlinear signal dynamics when scanning the delay between the applied laser pulses. By theoretically describing the process within a local field model, an excellent agreement with the experiment is reached. An effective Bloch vector representation is developed and thereby it is demonstrated that the destructive photon echo stems from a destructive interference of successive repetitions of the heterodyning experiment.
Destructive Photon Echo Formation in Six‐Wave Mixing Signals of a MoSe2 Monolayer
Hahn, Thilo (Autor:in) / Vaclavkova, Diana (Autor:in) / Bartos, Miroslav (Autor:in) / Nogajewski, Karol (Autor:in) / Potemski, Marek (Autor:in) / Watanabe, Kenji (Autor:in) / Taniguchi, Takashi (Autor:in) / Machnikowski, Paweł (Autor:in) / Kuhn, Tilmann (Autor:in) / Kasprzak, Jacek (Autor:in)
Advanced Science ; 9
01.01.2022
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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