Affiliation:
1. Kobe University
2. University of Sheffield
3. University of Glasgow
Abstract
Magnetic fields can increase the intensity of terahertz (THz) waves due to changing the dipole moment direction using the Lorentz force. This study reports the increase in the THz-wave intensity generated by differential frequency mixing using commercial permanent magnets under exciton-excitation. While a weak magnetic field applied to a multiple quantum well increases the THz-wave intensity due to excitons, a strong field causes its decrease. According to the calculations, the increase is caused by the electron-hole separation due to the Lorentz force. Furthermore, the calculations suggest the importance of carrier acceleration to enhance the intensity. Importantly, the increase in the THz-wave intensity due to differential frequency mixing does not require a strong magnetic field and can be achieved with inexpensive commercially available magnets.
Funder
Japan Society for the Promotion of Science
JSPS International Research Fellow
Kawanishi Memorial ShinMaywa Education Foundation
Support Center for Advanced Telecommunications Technology Research Foundation
MIKIYA Science and Technology Foundation
Hyogo Foundation for Science and Technology
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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