Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Czajkowski Gerard"'
We show how to calculate the optical functions of a nanoplatelet, taking into account the effect of a dielectric confinement on excitonic states. Real density matrix approach is employed to obtain analytical and semi-analytical relations for the abso
Externí odkaz:
http://arxiv.org/abs/2406.01144
Autor:
Ziemkiewicz, David, Knez, David, Garcia, Evan P., Zielińska-Raczyńska, Sylwia, Czajkowski, Gerard, Salandrino, Alessandro, Kharintsev, Sergey S., Noskov, Aleksei I., Potma, Eric O., Fishman, Dmitry A.
Two-photon absorption in indirect gap semiconductors is an frequently encountered, but not well-understood phenomenon. To address this, the Real Density Matrix Approach is applied to describe two-photon absorption in silicon through the excitonic res
Externí odkaz:
http://arxiv.org/abs/2403.01019
Combining the microscopic calculation of superlattice minibands and the macroscopic real density matrix approach one can obtain electric susceptibilities of the superlattice system irradiated by an electromagnetical wave. It is shown how to compute t
Externí odkaz:
http://arxiv.org/abs/2312.07171
Autor:
Ziemkiewicz, David, Knez, David, Garcia, Evan P., Zielińska-Raczyńska, Sylwia, Czajkowski, Gerard, Salandrino, Alessandro, Kharintsev, Sergey S., Noskov, Aleksei I., Potma, Eric O., Fishman, Dmitry A.
Publikováno v:
Journal of Chemical Physics; 10/14/2024, Vol. 161 Issue 14, p1-15, 15p
Autor:
Czajkowski Gerard, Silvestri Leonardo
Publikováno v:
Open Physics, Vol 4, Iss 2, Pp 254-269 (2006)
Externí odkaz:
https://doaj.org/article/b25bd3cd5d6347f88eac14a7103d0c7b
The quantum confiment of Rydberg excitons (REs) in quantum structures opens the way towards considering nonlinear interactions in such systems. We present a theoretical calculation of optical functions in the case of a nonlinear coupling between REs
Externí odkaz:
http://arxiv.org/abs/2206.06610
Autor:
Morin, Corentin, Tignon, Jérôme, Mangeney, Juliette, Dhillon, Sukhdeep, Czajkowski, Gerard, Karpiński, Karol, Zielińska-Raczyńska, Sylwia, Ziemkiewicz, David, Boulier, Thomas
We investigate the nonlinear refraction induced by Rydberg excitons in $\mathrm{Cu_2O}$. Using a high-precision interferometry imaging technique that spatially resolves the nonlinear phase shift, we observe significant shifts at extremely low laser i
Externí odkaz:
http://arxiv.org/abs/2202.09239
Publikováno v:
Phys. Rev. B 104, 075303 (2021)
We present theoretical results of the calculations of optical functions for Cu$_2$O quantum well (QW) with Rydberg excitons in an external homogeneous electric field of an arbitrary field strength. Two configurations of an external electric field per
Externí odkaz:
http://arxiv.org/abs/2104.08800
Publikováno v:
Phys. Rev. B 104, 075304 (2021)
We present theoretically calculated optical functions for Cu$_2$O quantum well (QW) with Rydberg excitons in an external, homogeneous electric field parallel to the QW planes for the energy region above the gap, suitable to observe the Franz-Keldysh
Externí odkaz:
http://arxiv.org/abs/2104.08802
Autor:
Orfanakis, Konstantinos, Rajendran, Sai Kiran, Ohadi, Hamid, Zielińska-Raczyńska, Sylwia, Czajkowski, Gerard, Karpiński, Karol, Ziemkiewicz, David
Publikováno v:
Phys. Rev. B 103, 245426 (2021)
The quantum confinement of Rydberg excitons is an important step towards exploiting their large nonlinearities for quantum applications. We observe Rydberg excitons in natural nanoparticles of Cu$_2$O. We resolve up to the principal quantum number $n
Externí odkaz:
http://arxiv.org/abs/2011.12006