@inproceedings{821652bb2b394356bd624a5bf9b2af0f,
title = "The Response of Split-Well Direct-Phonon THz Quantum-Cascade Laser Structures to Changes in Doping",
abstract = "We have studied the effect of doping on the temperature performance of a split-well (SW) direct-phonon (DP) terahertz (THz) quantum-cascade laser (QCL) scheme supporting a clean three-level system. We expected to obtain a similar improvement in the temperature performance to that observed in resonant-phonon (RP) schemes after increasing the carrier concentration from 3 × 1010cm-2 to 6 × 1010, cm-2 To our surprise, in the devices we checked, the results show the contrary. However, we observed a significant increase in gain broadening and a reduction in the dephasing time as the doping and temperature increased. We attribute these effects to enhanced ionized-impurity scattering (IIS). The observation and study of effects related to dephasing included in our experimental work have previously only been possible via simulation.",
author = "Gower, {N. Lander} and S. Piperno and A. Albo",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 47th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2022 ; Conference date: 28-08-2022 Through 02-09-2022",
year = "2022",
doi = "https://doi.org/10.1109/irmmw-thz50927.2022.9895500",
language = "الإنجليزيّة",
series = "International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz",
publisher = "IEEE Computer Society",
booktitle = "IRMMW-THz 2022 - 47th International Conference on Infrared, Millimeter and Terahertz Waves",
address = "الولايات المتّحدة",
}