August 5, 2023 Thesis Open Access

Nigatu Gurmessa Brusso

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  <identifier identifierType="DOI">10.20372/nadre:15330</identifier>
  <creators>
    <creator>
      <creatorName>Nigatu Gurmessa Brusso</creatorName>
    </creator>
  </creators>
  <titles>
    <title>STUDYONCOUPLEDANOPTOMECHANICALSYSTEMSFOR  SENSINGAPPLICATIONS: DISPLACEMENTANDMASS</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2023</publicationYear>
  <dates>
    <date dateType="Issued">2023-08-05</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Thesis</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://nadre.ethernet.edu.et/record/15330</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.20372/nadre:15329</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://nadre.ethernet.edu.et/communities/20-25</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/odc-by">Open Data Commons Attribution License</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Advisor: Misganu Chewaka (Ph.D&lt;/p&gt;

&lt;p&gt;This thesis was aimed at studied the cavity coupled optomechanical systems for sensing applications; we study the progress of precision sensing applications using optomechanical systems. The method used in this study was first we would introduce the physical princi ples of optomechanical sensing, including a discussion of the noises and sensitivity of the systems and Hamiltonian of cavity optomechanics then we would examine the advance ments in displacement sensing , mass sensing and introduce the progress of using quantum techniques especially laser light to enhance the performance of the optomechanical sensors. The result of the study was calculated using cavity of Hamiltonian, zero point fluctuation of mechanical oscillator and described a mechanical resonator by a harmonic oscillator, which has an effective mass mef f, a spring constant k, and a resonance frequency. Additionally, wolfram mathematical soft wares has been used for drawing the graphs of resonance fre quency versus effective mass and Zero point fluctuation versus the optical (mechanical) resonance frequency. Changes in the spring effective mass mef f will cause the resonance frequency shift of the mechanical resonator fm i .e as the resonance frequency increase the spring effective mass of the mechanical resonators decrease and as zero point fluctuation in crease the optical (mechanical) resonance frequency decrease. The researcher of this study recommended experimental research for further investigations there by the concerned body provide necessary facility and equipment&amp;rsquo;s. Keywords: Cavity optomechanics, Mechanical resonators, Radiation pressure, Preci sion sensing, Laser light&lt;/p&gt;</description>
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