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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 (author) / Vaclavkova, Diana (author) / Bartos, Miroslav (author) / Nogajewski, Karol (author) / Potemski, Marek (author) / Watanabe, Kenji (author) / Taniguchi, Takashi (author) / Machnikowski, Paweł (author) / Kuhn, Tilmann (author) / Kasprzak, Jacek (author)
Advanced Science ; 9
2022-01-01
13 pages
Article (Journal)
Electronic Resource
English
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