{"id":{"repo_id":"temple","oai_identifier":"oai:scholarshare.temple.edu:20.500.12613/2090"},"canonical_url":"https://search.dev.ndltd.org/etd/temple/oai:scholarshare.temple.edu:20.500.12613/2090","repository":{"repo_id":"temple","name":"Temple University","base_url":"https://scholarshare.temple.edu/server/oai/request"},"display":{"title":"Optical Control and Spectroscopic Studies of Collisional Population Transfer in Molecular Electronic States","abstract":"The quantum interference effects, such as the Autler-Townes (AT) effect and electromagnetically induced transparency (EIT) applied to molecular systems are the focus of this Dissertation in the context of high resolution molecular spectroscopy. We demonstrate that the AT effect can be used to manipulate the spin character of a spin-orbit coupled pair of molecular energy levels serving as a \\textit{gateway} between the singlet and triplet electronic states. We demonstrate that the singlet-triplet mixing characters of the \\textit{gateway} levels can be controlled by manipulating the coupling laser \\textit{E} field amplitude. We observe experimentally the collisional population transfer between electronic states $G^1\\Pi_g (v=12, J=21, f)$ and $1^3\\Sigma _g^-(v=1, N=21, f)$ of $^7$Li$_2$. We obtain the Stern-Vollmer plot according to the vapor pressure dependence of collisional transfer rate. The triplet fluorescence from the mixed \\textit{gateway} levels to the triplet $b^3\\Pi_u(v'=1,J'=","abstract_html":"The quantum interference effects, such as the Autler-Townes (AT) effect and electromagnetically induced transparency (EIT) applied to molecular systems are the focus of this Dissertation in the context of high resolution molecular spectroscopy. We demonstrate that the AT effect can be used to manipulate the spin character of a spin-orbit coupled pair of molecular energy levels serving as a \\textit{gateway} between the singlet and triplet electronic states. We demonstrate that the singlet-triplet mixing characters of the \\textit{gateway} levels can be controlled by manipulating the coupling laser \\textit{E} field amplitude. We observe experimentally the collisional population transfer between electronic states <span class=\"etd-inline-math\">G<sup>1</sup>\\Pi<sub>g</sub> (v=12, J=21, f)</span> and <span class=\"etd-inline-math\">1<sup>3</sup>\\Sigma <sub>g</sub><sup>-</sup>(v=1, N=21, f)</span> of <span class=\"etd-inline-math\"><sup>7</sup></span>Li<span class=\"etd-inline-math\"><sub>2</sub></span>. We obtain the Stern-Vollmer plot according to the vapor pressure dependence of collisional transfer rate. The triplet fluorescence from the mixed \\textit{gateway} levels to the triplet $b^3\\Pi_u(v&#x27;=1,J&#x27;=","abstract_has_math":true,"creators":["Pan, Xinhua"],"institution":"Temple University. Libraries","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Lyyra, A. Marjatta"],"committee_chairs":[],"committee_members":["Metz, Andreas","Riseborough, Peter","Spano, Francis C.","Borguet, Eric"],"year":2017,"date_issued":"2017","date_published":"2017","updated_at":"2026-07-27T21:20:39Z","subjects":["Physics","Autler-townes effect","Collisional population transfer","Gateway effect","RKR potential energy curve","Spectroscopy","Spin-orbit interaction"],"languages":["eng"],"rights":["IN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available."],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/20.500.12613/2090","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Lyyra, A. Marjatta"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Metz, Andreas","Riseborough, Peter","Spano, Francis C.","Borguet, Eric"]},{"key":"dc:creator","label":"Author","values":["Pan, Xinhua"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2020-11-02T14:46:30Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2020-11-02T14:46:30Z"]},{"key":"dc:date.issued","label":"Date","values":["2017"]},{"key":"dc:publisher","label":"Institution","values":["Temple University. 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Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available."]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/20.500.12613/2090"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The quantum interference effects, such as the Autler-Townes (AT) effect and electromagnetically induced transparency (EIT) applied to molecular systems are the focus of this Dissertation in the context of high resolution molecular spectroscopy. We demonstrate that the AT effect can be used to manipulate the spin character of a spin-orbit coupled pair of molecular energy levels serving as a \\textit{gateway} between the singlet and triplet electronic states. We demonstrate that the singlet-triplet mixing characters of the \\textit{gateway} levels can be controlled by manipulating the coupling laser \\textit{E} field amplitude. We observe experimentally the collisional population transfer between electronic states $G^1\\Pi_g (v=12, J=21, f)$ and $1^3\\Sigma _g^-(v=1, N=21, f)$ of $^7$Li$_2$. We obtain the Stern-Vollmer plot according to the vapor pressure dependence of collisional transfer rate. The triplet fluorescence from the mixed \\textit{gateway} levels to the triplet $b^3\\Pi_u(v'=1,J'="]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Ph.D."]},{"key":"dc:title","label":"Title","values":["Optical Control and Spectroscopic Studies of Collisional Population Transfer in Molecular Electronic States"]}]}],"canonical_facts":{"dc:contributor.advisor":["Lyyra, A. Marjatta"],"dc:contributor.committeemember":["Metz, Andreas","Riseborough, Peter","Spano, Francis C.","Borguet, Eric"],"dc:creator":["Pan, Xinhua"],"dc:date.accessioned":["2020-11-02T14:46:30Z"],"dc:date.available":["2020-11-02T14:46:30Z"],"dc:date.issued":["2017"],"dc:description.abstract":["The quantum interference effects, such as the Autler-Townes (AT) effect and electromagnetically induced transparency (EIT) applied to molecular systems are the focus of this Dissertation in the context of high resolution molecular spectroscopy. We demonstrate that the AT effect can be used to manipulate the spin character of a spin-orbit coupled pair of molecular energy levels serving as a \\textit{gateway} between the singlet and triplet electronic states. We demonstrate that the singlet-triplet mixing characters of the \\textit{gateway} levels can be controlled by manipulating the coupling laser \\textit{E} field amplitude. We observe experimentally the collisional population transfer between electronic states $G^1\\Pi_g (v=12, J=21, f)$ and $1^3\\Sigma _g^-(v=1, N=21, f)$ of $^7$Li$_2$. We obtain the Stern-Vollmer plot according to the vapor pressure dependence of collisional transfer rate. The triplet fluorescence from the mixed \\textit{gateway} levels to the triplet $b^3\\Pi_u(v'=1,J'="],"dc:description.degree":["Ph.D."],"dc:identifier.uri":["http://hdl.handle.net/20.500.12613/2090"],"dc:language.iso":["eng"],"dc:publisher":["Temple University. Libraries"],"dc:rights":["IN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available."],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:subject":["Physics","Autler-townes effect","Collisional population transfer","Gateway effect","RKR potential energy curve","Spectroscopy","Spin-orbit interaction"],"dc:title":["Optical Control and Spectroscopic Studies of Collisional Population Transfer in Molecular Electronic States"],"dc:type":["Text"]},"updated_at":"2026-07-27T21:20:39Z"}