Abstract
Cooperative effects allow for fascinating characteristics in light–matter interacting systems. Here, we study naturally occurring superradiant coupling in a class of quasi–two-dimensional, layered semiconductor systems. We perform optical absorption experiments of the lowest exciton for transition-metal dichalcogenides with different numbers of atomic layers. We examine two representative materials, MoSe2 and WSe2, using incoherent broadband white light. The measured transmission at the A exciton resonance does not saturate for optically thick samples consisting of hundreds of atomic layers, and the transmission varies nonmonotonously with the layer number. A self-consistent microscopic calculation reproduces the experimental observations, clearly identifying superradiant coupling effects as the origin of this unexpected behavior.
| Original language | English (US) |
|---|---|
| Article number | 060749-07 |
| Pages (from-to) | 749-755 |
| Number of pages | 7 |
| Journal | Optica |
| Volume | 5 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 20 2018 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
Cite this
Superradiant coupling effects in transition-metal dichalcogenides. / Stevens, C. E.; Stroucken, T.; Stier, A. V.; Paul, J.; Zhang, H.; Dey, P.; Crooker, S. A.; Koch, Stephan W; Karaiskaj, D.
In: Optica, Vol. 5, No. 6, 060749-07, 20.06.2018, p. 749-755.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superradiant coupling effects in transition-metal dichalcogenides
AU - Stevens, C. E.
AU - Stroucken, T.
AU - Stier, A. V.
AU - Paul, J.
AU - Zhang, H.
AU - Dey, P.
AU - Crooker, S. A.
AU - Koch, Stephan W
AU - Karaiskaj, D.
PY - 2018/6/20
Y1 - 2018/6/20
N2 - Cooperative effects allow for fascinating characteristics in light–matter interacting systems. Here, we study naturally occurring superradiant coupling in a class of quasi–two-dimensional, layered semiconductor systems. We perform optical absorption experiments of the lowest exciton for transition-metal dichalcogenides with different numbers of atomic layers. We examine two representative materials, MoSe2 and WSe2, using incoherent broadband white light. The measured transmission at the A exciton resonance does not saturate for optically thick samples consisting of hundreds of atomic layers, and the transmission varies nonmonotonously with the layer number. A self-consistent microscopic calculation reproduces the experimental observations, clearly identifying superradiant coupling effects as the origin of this unexpected behavior.
AB - Cooperative effects allow for fascinating characteristics in light–matter interacting systems. Here, we study naturally occurring superradiant coupling in a class of quasi–two-dimensional, layered semiconductor systems. We perform optical absorption experiments of the lowest exciton for transition-metal dichalcogenides with different numbers of atomic layers. We examine two representative materials, MoSe2 and WSe2, using incoherent broadband white light. The measured transmission at the A exciton resonance does not saturate for optically thick samples consisting of hundreds of atomic layers, and the transmission varies nonmonotonously with the layer number. A self-consistent microscopic calculation reproduces the experimental observations, clearly identifying superradiant coupling effects as the origin of this unexpected behavior.
UR - http://www.scopus.com/inward/record.url?scp=85048828206&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048828206&partnerID=8YFLogxK
U2 - 10.1364/OPTICA.5.000749
DO - 10.1364/OPTICA.5.000749
M3 - Article
AN - SCOPUS:85048828206
VL - 5
SP - 749
EP - 755
JO - Optica
JF - Optica
SN - 2334-2536
IS - 6
M1 - 060749-07
ER -