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Optimizing Photoluminescence Retrieval from GaAs in a Fiber-Based Cryogenic Environment

Vries, H.W. de (2015) Optimizing Photoluminescence Retrieval from GaAs in a Fiber-Based Cryogenic Environment. Bachelor's Thesis, Physics.

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Abstract

The spin-flip lifetime T1 of donor-bound electron populations in Si-doped GaAs is a research topic of interest with respect to the stability of spin-based qubits. Our aim is to perform experiments on T1, which require a clear distinction between used excitation light and spin-flip light emission (SFLE). We retrieve light from SFLE out of a cryogenic environment via a polarization-maintaining single-mode fiber (reflection channel), and two multi-mode fibers (transmission channel). For successful T1-experiments, retrieval via the reflection channel is a necessity. As collecting SFLE in a cryogenic fiber-based setup is experimentally challenging, we performed optimization experiments on light retrieval, using photoluminescence of GaAs as a diagnostic tool.

Item Type: Thesis (Bachelor's Thesis)
Degree programme: Physics
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 Feb 2018 08:05
Last Modified: 15 Feb 2018 08:05
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/12954

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