{"id":863,"date":"2024-07-26T15:49:36","date_gmt":"2024-07-26T19:49:36","guid":{"rendered":"https:\/\/sites.temple.edu\/molecularoptics\/?page_id=863"},"modified":"2025-08-01T11:42:04","modified_gmt":"2025-08-01T15:42:04","slug":"all-optical-alignment-and-orientation-of-the-molecular-angular-momentum","status":"publish","type":"page","link":"https:\/\/sites.temple.edu\/molecularoptics\/all-optical-alignment-and-orientation-of-the-molecular-angular-momentum\/","title":{"rendered":"All-optical alignment and orientation of the molecular angular momentum"},"content":{"rendered":"\n<ul class=\"wp-block-list\">\n<li><em>Using dressed states created by laser radiation to align and orient the molecular angular momentum<\/em>\n<ul class=\"wp-block-list\">\n<li>Preparing gas-phase molecules with a pre-selected orientation is one of the main goals in chemical reaction dynamics. The ability to pre-select well-defined initial reactant quantum states eliminates ensemble averaging which greatly complicates the interpretation of dynamics effects in chemical reactions. In addition, initial state selectivity enhances the viability of quantum control schemes which seek to direct the course of chemical reactions.<\/li>\n\n\n\n<li>Similarly,&nbsp;<strong>all-optical control of molecular orientation and alignment&nbsp;<\/strong>on surfaces may turn out in the future to be a very attractive means for providing insights into mechanisms of chemical reactions on surfaces as well as helping advance the molecular-electronics approach to device fabrication. The current efforts in the former area include surface aligned photochemistry, where the crystalline surface structures are used to align and position chemical reagents prior to reaction.<\/li>\n\n\n\n<li>Furthermore, alignment of a molecule along a laser propagation direction is crucial for Coulomb explosion type molecular imaging.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Relevant publications:\n<ul class=\"wp-block-list\">\n<li>Control of Molecular Angular Momentum Alignment and Orientation\u00a0with Linearly and Circularly Polarized Light via the Autler-Townes Effect (<em>manuscript in preparation<\/em>)<\/li>\n\n\n\n<li><a href=\"https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/PhysRevLett.133.263601\">Molecular Angular Momentum Orientation Using Dressed States Created by Laser Radiation<\/a> (PRL, 2024 &#8211; poster below)<\/li>\n\n\n\n<li><a href=\"https:\/\/journals.aps.org\/pra\/abstract\/10.1103\/PhysRevA.49.R1535\">Final-state alignment from the quantum-state-selected photodissociation of K_2 by all-optical triple resonance spectroscopy<\/a> (PRA)<\/li>\n\n\n\n<li><a href=\"https:\/\/pubs.aip.org\/aip\/jcp\/article\/102\/6\/2440\/481541\/Quantum-state-selected-photodissociation-of-K2-B-1\">Quantum state\u2010selected photodissociation of K_2(B\u20091\u03a0u\u2190X\u20091\u03a3g+): A case study of final state alignment in all\u2010optical multiple resonance photodissociation<\/a> (JCP)<\/li>\n\n\n\n<li><a href=\"https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/PhysRevLett.83.288\">Autler-Townes Splitting in Molecular Lithium: Prospects for All-Optical Alignment of Nonpolar Molecules<\/a> (PRL)<\/li>\n\n\n\n<li><a href=\"https:\/\/journals.aps.org\/pra\/abstract\/10.1103\/PhysRevA.76.053407\">Effect of Doppler broadening on Autler-Townes splitting in the molecular cascade excitation scheme<\/a> (PRA)<\/li>\n\n\n\n<li><a href=\"https:\/\/journals.aps.org\/pra\/abstract\/10.1103\/PhysRevA.78.043405\">Experimental observation of the dependence of Autler-Townes splitting on the probe and coupling laser wave-number ratio in Doppler-broadened open molecular cascade systems<\/a> (PRA)<\/li>\n\n\n\n<li><a href=\"https:\/\/pubs.aip.org\/aip\/jcp\/article\/134\/17\/174301\/699485\">Collisional Transfer of Population and Orientation in NaK<\/a> (JCP)<\/li>\n\n\n\n<li><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/B9780123964823000090\">The Autler\u2013Townes Effect in Molecules: Observations, Theory, and Applications<\/a> (Advances in Atomic, Molecular, and Optical Physics)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poster:<\/li>\n<\/ul>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/sites.temple.edu\/molecularoptics\/files\/2024\/07\/Damop-2024-Orientation-poster-JS-v7.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of Damop-2024-Orientation-poster-JS-v7.\"><\/object><a id=\"wp-block-file--media-e949bfea-710e-4ffd-8613-18c6bb4f1c64\" href=\"https:\/\/sites.temple.edu\/molecularoptics\/files\/2024\/07\/Damop-2024-Orientation-poster-JS-v7.pdf\">Damop-2024-Orientation-poster-JS-v7<\/a><a href=\"https:\/\/sites.temple.edu\/molecularoptics\/files\/2024\/07\/Damop-2024-Orientation-poster-JS-v7.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-e949bfea-710e-4ffd-8613-18c6bb4f1c64\">Download<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":28395,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"class_list":["post-863","page","type-page","status-publish","hentry"],"acf":[],"featured_image_src":null,"featured_image_src_square":null,"_links":{"self":[{"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/pages\/863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/users\/28395"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/comments?post=863"}],"version-history":[{"count":10,"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/pages\/863\/revisions"}],"predecessor-version":[{"id":1280,"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/pages\/863\/revisions\/1280"}],"wp:attachment":[{"href":"https:\/\/sites.temple.edu\/molecularoptics\/wp-json\/wp\/v2\/media?parent=863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}