학술논문

Carrier dynamics in InSe and the impact of terahertz pulses
Document Type
Conference
Source
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) Infrared, Millimeter and Terahertz Waves (IRMMW-THz),2022 47th International Conference on. :1-2 Aug, 2022
Subject
Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Stimulated emission
Spontaneous emission
Cooling
Absorption
Phonons
Hot carriers
Acoustics
Language
ISSN
2162-2035
Abstract
We investigate the electron-hole dynamics in few-layer InSe, a van der Waals semiconductor with promising opt-electronic properties. We show that terahertz pulses modulate the spontaneous emission via absorption by photo-excited carriers. We further study the carrier-phonon interaction in the cooling process of the hot carriers, elucidating the roles of acoustic and optical phonons.