Nonlinear polariton parametric emission in an atomically thin semiconductor based microcavity

Zhao, Jiaxin; Fieramosca, Antonio; Bao, Ruiqi; Du, Wei; Dini, K.; Su, Rui; Feng, Jiangang; Luo, Yuping; Sanvitto, D.; Liew, T.; Xiong, Qihua

doi:10.1038/s41565-022-01073-9

Cited by 51 publications

(42 citation statements)

References 59 publications

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“…MX 2 (M Mo, W; X S, Se) Flake Exfoliation/CVD 1-2 320-720 11.4-780 [37,120,[192][193][194][195][196] Carbon nanotubes Wannier-Mott Single-walled carbon nanotubes (SWCNTs)…”

Section: Wannier-mottmentioning

confidence: 99%

“…The orange and purple lines represent the transmission spectra of seed alone and seed with pump, respectively. The gain as a function of pump fluence is shown in the inset [196] . (d) Observation of WS 2 microcavity polariton lasing at room temperature.…”

Section: Nonlinear Effects In Tmd Microcavitiesmentioning

confidence: 99%

“…In the early stage, it was thought that the observation of effects such as polariton parametric scattering, which are well established in III-V semiconductor microcavities and are at the heart of nonlinear polariton devices, was hindered by the weak interaction constant and short lifetimes of TMD microcavities. However, despite these fundamental limitations of the state-ofthe-art TMD polariton microcavities, Zhao et al very recently observed nonlinear optical parametric polariton scattering in a monolayer WS 2 microcavity [196] . The polariton parametric amplification is achieved under pulsed resonant excitation at the inflection point, triggering the ground state of LP branch dispersion.…”

Section: Nonlinear Effects In Tmd Microcavitiesmentioning

confidence: 99%

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Microcavity exciton polaritons at room temperature

Ghosh

Zhao

et al. 2022

Photonics Insights

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The quest for realizing novel fundamental physical effects and practical applications in ambient conditions has led to tremendous interest in microcavity exciton polaritons working in the strong coupling regime at room temperature. In the past few decades, a wide range of novel semiconductor systems supporting robust exciton polaritons have emerged, which has led to the realization of various fascinating phenomena and practical applications. This paper aims to review recent theoretical and experimental developments of exciton polaritons operating at room temperature, and includes a comprehensive theoretical background, descriptions of intriguing phenomena observed in various physical systems, as well as accounts of optoelectronic applications. Specifically, an in-depth review of physical systems achieving room temperature exciton polaritons will be presented, including the early development of ZnO and GaN microcavities and other emerging systems such as organics, halide perovskite semiconductors, carbon nanotubes, and transition metal dichalcogenides. Finally, a perspective of outlooking future developments will be elaborated.

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“…MX 2 (M Mo, W; X S, Se) Flake Exfoliation/CVD 1-2 320-720 11.4-780 [37,120,[192][193][194][195][196] Carbon nanotubes Wannier-Mott Single-walled carbon nanotubes (SWCNTs)…”

Section: Wannier-mottmentioning

confidence: 99%

Section: Nonlinear Effects In Tmd Microcavitiesmentioning

confidence: 99%

Section: Nonlinear Effects In Tmd Microcavitiesmentioning

confidence: 99%

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Microcavity exciton polaritons at room temperature

Ghosh

Zhao

et al. 2022

Photonics Insights

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“…Materials exhibiting nonlinear optical properties by frequency doubling (second‐harmonic generation, SHG) or supercontinuum generation (white‐light generation, WLG) have been in the focus of the scientific community for a long time. [ 1–13 ] The term “supercontinuum generation” describes an extreme spectral broadening of an originally monochromatic light beam upon propagating through a nonlinear medium, [ 8,10 ] as an alternative to the conventional generation of white light by means of inorganic phosphors or inorganic as well as organic semiconductors. [ 14–16 ] The broad spectrum obtained may cover the entire visible spectral range; in these cases, the observed emission resembles white light and the process is therefore referred to as WLG.…”

Section: Introductionmentioning

confidence: 99%

Cluster‐Glass for Low‐Cost White‐Light Emission

et al. 2022

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The term "supercontinuum generation" describes an extreme spectral broadening of an originally monochromatic light beam upon propagating through a nonlinear medium, [8,10] as an alternative to the conventional generation of white light by means of inorganic phosphors or inorganic as well as organic semiconductors. [14][15][16] The broad spectrum obtained may cover the entire visible spectral range; in these cases, the observed emission resembles white light and the process is therefore referred to as WLG. The physical mechanisms underlying supercontinuum generation can be diverseand can also occur as a combination of nonlinear optical effects, like self-phase and cross-phase modulation, four-wave mixing, or solitonic phenomena. [17][18][19][20] While in most cases pulsed-laser sources are required for such processes, WLG upon irradiation of a material with a near-infrared continuous-wave (NIR CW) laser of significantly lower costs (by a factor of ≈10 3 …10 4 as compared to the pulsed lasers) has been reported for (doped) oxides or oxidic hybrid compounds, for complexes of rare-earth metals, and for carbon-based solids. [1] Given the complexity of the processes, different compounds exhibiting WLG can show the extreme nonlinear effects owing to different reasons or different combinations of mechanisms, which in many cases have not yet been fully elucidated to date.The development of efficient and high-brilliance white-light sources is an essential contribution to innovative emission technologies. Materials exhibiting strong nonlinear optical properties, in particular second-harmonic generation (SHG) or white-light generation (WLG), have therefore been investigated with great activity in recent times. While many new approaches have been reported until now, the processability of the compounds remains a challenge. Here, a new class of materials, denoted as "cluster-glass", which do not only show superior white-light emission properties upon irradiation by an inexpensive continuous-wave infrared laser diode, but can be easily accommodated in size and shape by formation of robust glassy solids, is introduced. The cluster-glass materials are fabricated by mild heating from crystalline powders of adamantane-type clusters exhibiting a quaternary, inorganic-organic hybrid cluster core [(PhSi)(CH 2 ) 3 (PhSn)E 3 ] (E = S, Se, Te). The process is fully reversible and preserves the integrity of the clusters in the glass, as proven by solution spectroscopy and recrystallization. Theoretical studies corroborate the importance of the quaternary nature of the cluster cores for the observed structural and optical phenomena. Thanks to these findings, high-brilliance white-light sources can be synthesized in form of stable, robust glass of any shape, which ultimately renders them suitable for everyday's applications.

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“…Studies of polariton nonlinearities are of key importance for the understanding of the nonlinear optical processes which form the basis of coherent emission, for ultrafast optical switches and for optical parametric scattering, the latter being observed very recently in a TMD vertical cavity 26 . However, investigations of such effects on the ultrafast timescale and in deep-subwavelength optical structures have been very limited so far.…”

mentioning

confidence: 99%