Enhanced terahertz emission from coherent longitudinal optical phonons in a quantum well structure under applied bias

2009 ◽  
Vol 94 (17) ◽  
pp. 171105 ◽  
Author(s):  
Kohji Mizoguchi ◽  
Yusuke Kanzawa ◽  
Shingo Saito ◽  
Kiyomi Sakai ◽  
Masaaki Nakayama
Keyword(s):  
Quantum Well ◽  
Longitudinal Optical ◽  
Optical Phonons ◽  
Applied Bias ◽  
Terahertz Emission ◽  
Quantum Well Structure

Scattering Processes with the Emission of Longitudinal Optical Phonons in the Landau Level System In GaAs/AlGaAs Quantum Well

2021 ◽  
Author(s):  
Ngo Vinh Doan The ◽  
Trung Le Canh
Keyword(s):  
Magnetic Field ◽  
Quantum Well ◽  
Quantum Wells ◽  
Golden Rule ◽  
Longitudinal Optical ◽  
Optical Phonons ◽  
Scattering Rate ◽  
Quantizing Magnetic Field ◽  
Scattering Time ◽  
The Magnetic Field

Abstract The scattering processes of longitudinal optical phonons in GaAs/AlGaAs quantum wells in a quantizing magnetic field are considered. The time of intrasubband scattering between Landau levels is calculated by using Fermi's golden rule. The dependence of the scattering rate on the magnitude of the magnetic field has been shown and the magnetic field can suppress scattering processes on longitudinal optical phonons. It is found that the scattering time depends linearly on the width of the quantum well.

Sign in / Sign up

Export Citation Format

Share Document