Skip to main content

Research Repository

Advanced Search

Dr ANDREY AKIMOV's Outputs (3)

Magnon polaron formed by selectively coupled coherent magnon and phonon modes of a surface patterned ferromagnet (2020)
Journal Article
Godejohann, F., Scherbakov, A., Kukhtaruk, S., Poddubny, A., Yaremkevich, D., Wang, M., Nadzeyka, A., Yakovlev, D., Rushforth, A., Akimov, A., & Bayer, M. (2020). Magnon polaron formed by selectively coupled coherent magnon and phonon modes of a surface patterned ferromagnet. Physical Review B, 102(14), Article 144438. https://doi.org/10.1103/PhysRevB.102.144438

Strong coupling between two quanta of different excitations leads to the formation of a hybridized state which paves a way for exploiting new degrees of freedom to control phenomena with high efficiency and precision. A magnon polaron is the hybridiz... Read More about Magnon polaron formed by selectively coupled coherent magnon and phonon modes of a surface patterned ferromagnet.

Temporal superoscillations of subterahertz coherent acoustic phonons (2020)
Journal Article
Brehm, S., Akimov, A. V., Campion, R. P., & Kent, A. J. (2020). Temporal superoscillations of subterahertz coherent acoustic phonons. Physical Review Research, 2(2), Article 023009. https://doi.org/10.1103/physrevresearch.2.023009

We observe coherent acoustic phonon superoscillations at subterahertz frequencies. The superoscillations result from the interference of optically excited coherent longitudinal acoustic phonon modes in a GaAs/AlGaAs superlattice. The superoscillation... Read More about Temporal superoscillations of subterahertz coherent acoustic phonons.

High-speed modulation of a terahertz quantum cascade laser by coherent acoustic phonon pulses (2020)
Journal Article
Dunn, A., Poyser, C., Dean, P., Demić, A., Valavanis, A., Indjin, D., Salih, M., Kundu, I., Li, L., Akimov, A., Davies, A. G., Linfield, E., Cunningham, J., & Kent, A. (2020). High-speed modulation of a terahertz quantum cascade laser by coherent acoustic phonon pulses. Nature Communications, 11, Article 835. https://doi.org/10.1038/s41467-020-14662-w

The fast modulation of lasers is a fundamental requirement for applications in optical communications, high-resolution spectroscopy and metrology. In the terahertz-frequency range, the quantum-cascade laser (QCL) is a high-power source with the poten... Read More about High-speed modulation of a terahertz quantum cascade laser by coherent acoustic phonon pulses.