Authors: | Kobecki, Michal |
Title: | Optical excitation and detection of high-frequency coherent phonons and magnons |
Language (ISO): | en |
Abstract: | The goal of this work is to obtain better control over all-optical excitation and detection of high-frequency collective excitations, in particular - phonons and magnons. Phonons- a collective movement of atoms in the lattice, and magnons- excitations of a spin system in magnetically ordered materials, recently became the prospective alternative to electrons in quantum computing or in general, information technology. In the scope of this thesis, we present a novel approach to the resonant excitation of fundamental magnon mode in a thin ferromagnetic film of Iron-Gallium alloy, as well as enhanced detection sensitivity of propagating coherent phonon wave packet exploiting giant photo-elasticity of exciton-polaritons in GaAs/AlAs superlattice. Additionally, a possible way to miniaturize the all-optical set-ups for manipulation of collective excitations is proposed by implementing a passively mode-locked semiconductor laser diode. |
Subject Headings: | Photons Magnons Miniaturization Pump probe technique |
Subject Headings (RSWK): | Phonon Magnon Pump-Probe-Technik Miniaturisierung |
URI: | http://hdl.handle.net/2003/41177 http://dx.doi.org/10.17877/DE290R-23024 |
Issue Date: | 2022 |
Appears in Collections: | Experimentelle Physik II |
Files in This Item:
File | Description | Size | Format | |
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Michal Kobecki Dissertation.pdf | DNB | 3.39 MB | Adobe PDF | View/Open |
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