Search Results - "Dani, K M"

Intraband conductivity response in graphene observed using ultrafast infrared-pump visible-probe spectroscopy by Dani, K. M., Lee, J., Sharma, R., Mohite, A. D., Galande, C. M., Ajayan, P. M., Dattelbaum, A. M., Htoon, H., Taylor, A. J., Prasankumar, R. P.

“…Graphene, a truly two-dimensional material with a unique linear energy-momentum dispersion, demonstrates novel photonic properties such as universal absorption…”
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Ultrafast enhancement of ferromagnetism via photoexcited holes in GaMnAs by Wang, J, Cotoros, I, Dani, K M, Liu, X, Furdyna, J K, Chemla, D S

“…We report on the observation of ultrafast photoenhanced ferromagnetism in GaMnAs. It is manifested as a transient magnetization increase on a 100 ps time…”
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Strong Electronic Correlation Effects in Coherent Multidimensional Nonlinear Optical Spectroscopy by Karadimitriou, M. E, Kavousanaki, E. G, Dani, K. M, Fromer, N. A, Perakis, I. E

“…We discuss a many−body theory of the coherent ultrafast nonlinear optical response of systems with a strongly correlated electronic ground state that responds…”
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20 THz broadband generation using semi-insulating GaAs interdigitated photoconductive antennas by Hale, P J, Madeo, J, Chin, C, Dhillon, S S, Mangeney, J, Tignon, J, Dani, K M

“…We demonstrate broadband (20 THz), high electric field, terahertz generation using large area interdigitated antennas fabricated on semi-insulating GaAs. The…”
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Ultrafast dynamics of coherences in a quantum Hall system by Dani, K M, Tignon, J, Breit, M, Chemla, D S, Kavousanaki, E G, Perakis, I E

“…Using three-pulse four-wave-mixing optical spectroscopy, we study the ultrafast dynamics of the quantum Hall system. We observe striking differences as…”
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Patch antenna microcavity terahertz sources with enhanced emission by Madéo, J., Todorov, Y., Gilman, A., Frucci, G., Li, L. H., Davies, A. G., Linfield, E. H., Sirtori, C., Dani, K. M.

“…We study the emission properties of an electroluminescent THz frequency quantum cascade structure embedded in an array of patch antenna double-metal…”
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Correlation effects in the ultrafast dynamics of the Quantum Hall system close to v = 1 by Kavousanaki, E. G., Dani, K. M., Tignon, J., Chemla, D. S., Perakis, I. E.

“…We present a many‐body theory of the non‐linear optical response of the Quantum Hall system. This theory describes the role of the cold, strongly correlated,…”
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Terahertz Emission Properties from Fe/Pt Metallic Spintronic Hetero-Structures by Tani, M., Mag-usara, V., Talara, M., Tachioka, C., Afalla, J., Muldera, J., Furuya, T., Escano, M. C. S., Torosyan, G., Scheuer, L., Sokoluk, D., Rahm, M., Papaioannou, E. Th, Beigang, R., Petoukhoff, C. E., Madeo, J., Dani, K. M., Saito, K., Guo, Q., Kitahara, H., Nakajima, M., Bulgarevich, D., Watanabe, M.

“…Spintronic terahertz (THz) emitters [1]-[2], consisting of ultrathin ferromagnetic and non-ferromagnetic metallic layers, have advantages over conventional THz…”
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Visualization of two-dimensional transition dipole moment texture in momentum space using high-harmonic generation spectroscopy by Uchida, K, Pareek, V, Nagai, K, Dani, K. M, Tanaka, K

“…Phys. Rev. B 103, 161406 (2021) Highly nonlinear optical phenomena can provide access to properties of electronic systems which are otherwise difficult to…”
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Deterministic optical Fock-state generation by Brown, K. R., Dani, K. M., Stamper-Kurn, D. M., Whaley, K. B.

“…We present a scheme for the deterministic generation of N-photon Fock states from N three-level atoms in a high-finesse optical cavity. The method applies an…”
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Transition dipole moment structure revealed by high harmonic generation spectroscopy in thin layer black phosphorus by Uchida, K., Pareek, V., Nagai, K., Dani, K. M., Tanaka, K.

“…High harmonic generation (HHG), which emits radiations with integer multiples of incident laser photon energy, is the most essential nonlinear optical…”
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Ultrafast dynamics and sub-wavelength periodic structure formation following irradiation of GaAs with femtosecond laser pulses by Margiolakis, A, Tsibidis, G. D, Dani, K. M, Tsironis, G. P

“…Phys. Rev. B 98, 224103 (2018) A theoretical investigation of the ultrafast processes and dynamics of the excited carriers upon irradiation of GaAs with…”
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Parametric scattering in semiconductor microcavities probed by four-wave mixing by Huynh, A., Diederichs, C., Dani, K.M., André, R., Dang, Le Si, Tignon, J.

“…We present a study of the polariton coherent dynamics in II–VI semiconductor microcavities in the parametric scattering regime. We perform angle resolved…”
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Relativistic Drude Response of Photoexcited Dirac Quasiparticles in Graphene by Dani, K. M, Lee, J, Sharma, R, Mohite, A. D, Galande, C. M, Ajayan, P. M, Dattelbaum, A. M, Htoon, H, Taylor, A. J, Prasankumar, R. P

“…Phys. Rev. B 86, 125403 (2012) Graphene, a monolayer of carbon atoms arranged in a hexagonal pattern, provides a unique two-dimensional (2D) system exhibiting…”
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Ultrafast broadband mid-infrared pump, terahertz probe spectroscopy by Dani, K M, O'Hara, J F, McCulloch, Q, Chen, F, Azad, A K, Dakovski, G, Crooker, S A, Taylor, A J, Prasankumar, R P

“…We report a novel ultrafast optical system capable of directly pumping low energy excitations in complex materials and probing the photoinduced changes in…”
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Observation of inter-Landau-level quantum coherence in semiconductor quantum wells by Dani, K. M, Cotoros, I. A, Wang, J, Tignon, J, Chemla, D. S, Kavousanaki, E. G, Perakis, I. E

“…Phys. Rev. B 78, 041301(R) (2008) Using three-pulse four-wave-mixing femtosecond spectroscopy, we excite a non-radiative coherence between the discrete Landau…”
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Observation of an inter-Landau level quantum coherence in semiconductor quantum wells by Dani, K. M., Cotoros, I. A., Wang, J., Tignon, J., Chemla, D. S., Kavousanaki, E. G., Perakis, I. E.

“…Using three-pulse four-wave-mixing femtosecond spectroscopy, we excite a nonradiative coherence between the discrete Landau levels of an undoped quantum well…”
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Broadband THz generation using interdigitated photoconductive antennas with a 15 fs, high power oscillator by Hale, P. J., Madeo, J., Chin, C., Dhillon, S. S., Mangeney, J., Tignon, J., Dani, K. M.

“…We study the generation of broadband THz radiation (~18 THz) with high peak electric field (~0.5 kV/cm) using a low temperature GaAs interdigitated…”
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Nonlinear optical studies of the transient coherence in the Quantum Hall system: Emergent phenomena in quantum hall systems by DANI, K. M, KAVOUSANAKI, E. G, TIGNON, J, CHEMLA, D. S, PERAKIS, I. E

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Correlation effects in the ultrafast dynamics of the quantum Hall system close to $\nu$ =1 by Kavousanaki, Eleftheria, Dani, Keshav M., Tignon, Jérôme, S. Chemla, Daniel, E. Perakis, Ilias

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