Optical feedback cooling of a mechanical silicon oscillator with a single laser

Optical feedback cooling was attempted on a split silicon beam photonic crystal oscillator, which acts as an optical cavity and a micromechanical resonator. The cooling setup uses a single laser for the dual roles of position measurement and feedback via amplitude modulation. The theoretical basis o...

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Main Author: Nätkinniemi, Joonas
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Fysiikan laitos, Department of Physics, Jyväskylän yliopisto, University of Jyväskylä
Format: Master's thesis
Language:eng
Published: 2020
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/71285
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author Nätkinniemi, Joonas
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics Jyväskylän yliopisto University of Jyväskylä
author_facet Nätkinniemi, Joonas Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics Jyväskylän yliopisto University of Jyväskylä Nätkinniemi, Joonas Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics Jyväskylän yliopisto University of Jyväskylä
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description Optical feedback cooling was attempted on a split silicon beam photonic crystal oscillator, which acts as an optical cavity and a micromechanical resonator. The cooling setup uses a single laser for the dual roles of position measurement and feedback via amplitude modulation. The theoretical basis of optomechanical feedback cooling is explored, and expected spectrum of the feedback experiment is simulated. Feedback experiments were performed and the resulting spectrums were plotted and analyzed. Because of mistakes made in the experiment setup, significant unwanted parasitic feedback effect was encountered during the feedback experiments, which resulted in no detectable cooling effect. The probable significant causes of the parasitic feedback were identified and ways to correct them proposed for possible follow up experiments.
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spellingShingle Nätkinniemi, Joonas Optical feedback cooling of a mechanical silicon oscillator with a single laser Fysiikka Physics 4021 palaute mekaniikka kylmeneminen feedback mechanics cooling
title Optical feedback cooling of a mechanical silicon oscillator with a single laser
title_full Optical feedback cooling of a mechanical silicon oscillator with a single laser
title_fullStr Optical feedback cooling of a mechanical silicon oscillator with a single laser Optical feedback cooling of a mechanical silicon oscillator with a single laser
title_full_unstemmed Optical feedback cooling of a mechanical silicon oscillator with a single laser Optical feedback cooling of a mechanical silicon oscillator with a single laser
title_short Optical feedback cooling of a mechanical silicon oscillator with a single laser
title_sort optical feedback cooling of a mechanical silicon oscillator with a single laser
title_txtP Optical feedback cooling of a mechanical silicon oscillator with a single laser
topic Fysiikka Physics 4021 palaute mekaniikka kylmeneminen feedback mechanics cooling
topic_facet 4021 Fysiikka Physics cooling feedback kylmeneminen mechanics mekaniikka palaute
url https://jyx.jyu.fi/handle/123456789/71285 http://www.urn.fi/URN:NBN:fi:jyu-202007305433
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