Optical Properties of Intrinsic Excitons in Bulk Semiconductors

Kalt, H.; Klingshirn, C.

doi:10.1007/978-3-030-24152-0_21

Graduate Texts in Physics

2019

DOI: 10.1007/978-3-030-24152-0_21

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Optical Properties of Intrinsic Excitons in Bulk Semiconductors

H. Kalt¹,

C. Klingshirn²

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2024

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Cited by 1 publication

References 216 publications

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Optically Tunable Many‐Body Exciton‐Phonon Quantum Interference

Chang,

Huang,

et al. 2024

Advanced Science

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This study introduces a novel paradigm for achieving widely tunable many‐body Fano quantum interference in low‐dimensional semiconducting nanostructures, beyond the conventional requirement of closely matched energy levels between discrete and continuum states observed in atomic Fano systems. Leveraging Floquet engineering, the remarkable tunability of Fano lineshapes is demonstrated, even when the original discrete and continuum states are separated by over 1 eV. Specifically, by controlling the quantum pathways of discrete phonon Raman scattering using femtosecond laser pulses, the Raman intermediate states across the excitonic Floquet band are tuned. This manipulation yields continuous transitions of Fano lineshapes from antiresonance to dispersive and to symmetric Lorentzian profiles, accompanied by significant variations in Fano parameter q and Raman intensity spanning 2 orders of magnitude. A subtle shift in the excitonic Floquet resonance is further shown, achieved by controlling the intensity of the femtosecond laser, which profoundly modifies quantum interference strength from destructive to constructive interference. The study reveals the crucial roles of Floquet engineering in coherent light‐matter interactions and opens up new avenues for coherent control of Fano quantum interference over a broad energy spectrum in low‐dimensional semiconducting nanostructures.

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Optically Tunable Many‐Body Exciton‐Phonon Quantum Interference

Chang,

Huang,

et al. 2024

Advanced Science

View full text Add to dashboard Cite

show abstract

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Optical Properties of Intrinsic Excitons in Bulk Semiconductors

Cited by 1 publication

References 216 publications

Optically Tunable Many‐Body Exciton‐Phonon Quantum Interference

Optically Tunable Many‐Body Exciton‐Phonon Quantum Interference

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