Zobrazeno 1 - 10
of 883
pro vyhledávání: '"Knezevic, I"'
Publikováno v:
Phys. Rev. B 103, 161401 (2021)
The development of nanomaterials with a large nonlinear susceptibility is essential for nonlinear nanophotonics. We show that transition-metal-dichalcogenide (TMD) nanotriangles have a large effective second-order susceptibility [$\chi^{(2)}$] at mid
Externí odkaz:
http://arxiv.org/abs/2102.06325
Publikováno v:
Phys. Rev. Applied 15, 034045 (2021)
We developed a time-dependent density-matrix model to study photon-assisted (PA) electron transport in quantum cascade lasers. The Markovian equation of motion for the density matrix in the presence of an optical field is solved for an arbitrary fiel
Externí odkaz:
http://arxiv.org/abs/2012.14491
Publikováno v:
J. Appl. Phys. 129, 084301 (2021)
We present the numerical tool DECaNT (Diffusion of Excitons in Carbon NanoTubes) that simulates exciton transport in thin films of carbon nanotubes. Through a mesh of nanotubes generated using the Bullet Physics C++ library, excitons move according t
Externí odkaz:
http://arxiv.org/abs/2010.11992
Autor:
Allam, M., Bahaa, H., Sayed, M., Al-Oballi, A., Alshahrani, A., Baek, D., Kim, J., Chua, H.M., Gangakhedkar, J., Jagtap, Mr P., Lyaskovsky, T., Okudaira, S., Ondee, W., Sotomayor, P.S., Ricra, J.I. Solis, Uviase, J., Ahmed, F., Rajendran, Y., Defendi, H.G. Tonioli, Cho, S.Yi O., Qu, A., Acha, V., Gencoglu, M., Ho, K., Baldrighi, M., Schiestl, M., Watson, K., Spitzer, E., Chong, S., Fukushima, A., Kang, H.-N., Knezevic, I., Pante, G., Simao, Mariangela, Wadhwa, Meenu, Kang, Hye-Na, Thorpe, Robin, Knezevic, Ivana, Aprea, P., Bielsky, M.-C., Ekman, N., Heim, H.-K., Joung, J., Kurki, P., Lacana, E., Njue, C., Nkansah, E., Savkina, M., Thorpe, R., Yamaguchi, T., Wadhwa, M., Wang, J., Weise, M., Wolff-Holz, E.
Publikováno v:
In Biologicals April 2022 76:1-9
We present a numerically efficient density-matrix model applicable to midinfrared quantum cascade lasers. The model is based on a Markovian master equation for the density matrix that includes in-plane dynamics, preserves positivity of the density ma
Externí odkaz:
http://arxiv.org/abs/1710.08870
Autor:
Mei, S., Knezevic, I.
Thermal transport in bulk ternary III-V arsenide (III-As) semiconductor alloys was investigated using equilibrium molecular dynamics with optimized Albe-Tersoff empirical interatomic potentials. Existing potentials for binary AlAs, GaAs, and InAs wer
Externí odkaz:
http://arxiv.org/abs/1710.08851
Autor:
Soleimanikahnoj, S., Knezevic, I.
Publikováno v:
Phys. Rev. Applied 8, 064021 (2017)
Zigzag phosphorene nanoribbons are metallic owing to the edge states, whose energies are inside the gap and far from the bulk bands. We show that -- through electrical manipulation of edge states -- electron propagation can be restricted to one of th
Externí odkaz:
http://arxiv.org/abs/1710.08400
Book chapter on multiscale electrothermal simulation of midinfrared quantum cascade lasers. To appear in Handbook of Optoelectronic Device Modeling and Simulation, Taylor and Francis Books, 2017. Editor: Joachim Piprek.
Comment: Book chapter. To
Comment: Book chapter. To
Externí odkaz:
http://arxiv.org/abs/1609.09130
Quantum cascade lasers (QCLs) are high-power coherent light sources in the midinfrared and terahertz parts of the electromagnetic spectrum. They are devices in which the electronic and lattice systems are far from equilibrium, strongly coupled to one
Externí odkaz:
http://arxiv.org/abs/1609.08717
Autor:
Shi, Y. B., Knezevic, I.
Publikováno v:
Journal of Applied Physics 116, 123105 (2014)
We investigate the effects of nonequilibrium phonon dynamics on the operation of a GaAs-based midinfrared quantum cascade laser over a range of temperatures (77--300 K) via a coupled ensemble Monte Carlo simulation of electron and optical-phonon syst
Externí odkaz:
http://arxiv.org/abs/1607.07943