{"id":112022,"date":"2020-08-21T14:17:32","date_gmt":"2020-08-21T18:17:32","guid":{"rendered":"https:\/\/www.ucf.edu\/news\/?p=112022"},"modified":"2024-02-09T11:55:36","modified_gmt":"2024-02-09T16:55:36","slug":"ucf-researchers-generate-attosecond-light-from-industrial-laser","status":"publish","type":"post","link":"https:\/\/www.ucf.edu\/news\/ucf-researchers-generate-attosecond-light-from-industrial-laser\/","title":{"rendered":"UCF Researchers Generate Attosecond Light from Industrial Laser"},"content":{"rendered":"<p><a href=\"https:\/\/www.ucf.edu\/research\/\">University of Central Florida researchers<\/a> are making the cutting-edge field of attosecond science more accessible to researchers from all disciplines.<\/p>\n<p>Their method to help open up the field is detailed in a new study published today in the journal <em>Science Advances<\/em>.<\/p>\n<p>An attosecond is one billionth of a billionth of a second, and the ability to make measurements with attosecond precision allows researchers to study the fast motion of electrons inside atoms and molecules at their natural time scale.<\/p>\n<p>Measuring this fast motion can help researchers understand fundamental aspects of how light interacts with matter, which can inform efforts to harvest solar energy for power generation, detect chemical and biological weapons, perform medical diagnostics and more.<\/p>\n<figure id=\"attachment_112086\" style=\"max-width: 200px;\" class=\"figure float-right\"><noscript><img decoding=\"async\" width=\"200\" height=\"300\" class=\"figure-img  img-fluid w-100 size-medium wp-image-112086\" src=\"https:\/\/www.ucf.edu\/news\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-200x300.jpg\" alt=\"Michael Chini\" srcset=\"https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-200x300.jpg 200w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-533x800.jpg 533w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-341x512.jpg 341w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-267x400.jpg 267w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-240x360.jpg 240w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web.jpg 800w\" sizes=\"(max-width: 200px) 100vw, 200px\"><\/noscript><img decoding=\"async\" width=\"200\" height=\"300\" class=\"figure-img  img-fluid w-100 size-medium wp-image-112086 lazyload\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20300%22%3E%3C%2Fsvg%3E\" alt=\"Michael Chini\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20300%22%3E%3C%2Fsvg%3E 200w\" sizes=\"(max-width: 200px) 100vw, 200px\" data-srcset=\"https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-200x300.jpg 200w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-533x800.jpg 533w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-341x512.jpg 341w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-267x400.jpg 267w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-240x360.jpg 240w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web.jpg 800w\" data-src=\"https:\/\/www.ucf.edu\/news\/wp-content\/blogs.dir\/20\/files\/2020\/08\/michael_chini_for_web-200x300.jpg\"><figcaption class=\"figure-caption\">UCF physics associate professor Michael Chini leads a team that is making attosecond science more accessible.<\/figcaption><\/figure>\n<p>\u201cOne of the main challenges of attosecond science is that it relies on world-class laser facilities,\u201d says Michael Chini, an associate professor in UCF\u2019s <a href=\"https:\/\/sciences.ucf.edu\/physics\/\">Department of Physics<\/a> and the study\u2019s principal investigator. \u201cWe are fortunate to have one here at UCF, and there are probably another dozen worldwide. But unfortunately, none of them are truly operated as \u2018user facilities,\u2019 where scientists from other fields can come in and use them for research.\u201d<\/p>\n<p>This lack of access creates a barrier for chemists, biologists, materials scientists and others who could benefit from applying attosecond science techniques to their fields, Chini says.<\/p>\n<p>\u201cOur work is a big step in the direction of making attosecond pulses more broadly accessible,\u201d Chini says. \u201cWe show that industrial-grade lasers, which can be purchased commercially from dozens of vendors with a price tag of around $100,000, can now be used to generate attosecond pulses.\u201d<\/p>\n<p>Chini says the setup is simple and can work with a wide variety of lasers with different parameters.<\/p>\n<p>Attosecond science works somewhat like sonar or 3D laser mapping, but at a much smaller scale. When an attosecond light pulse passes through a material, the interaction with electrons in the material distorts the pulse. Measuring these distortions allows researchers to construct images of the electrons and make movies of their motion.<\/p>\n<p>Typically, scientists have used complex laser systems, requiring large laboratory facilities and clean-room environments, as the driving lasers for attosecond science.<\/p>\n<p>Producing the extremely short light pulses needed for attosecond research \u2013 essentially consisting of only a single oscillation cycle of an electromagnetic wave \u2013 has further required propagating the laser through tubes filled with noble gases, such as xenon or argon, to further compress the pulses in time.<\/p>\n<p>But Chini\u2019s team has developed a way to get such few-cycle pulses out of more commonly available industrial-grade lasers, which previously could produce only much longer pulses.<\/p>\n<p>They compress approximately 100-cycle pulses from the industrial-grade lasers by using molecular gases, such as nitrous oxide, in the tubes instead of noble gases and varying the length of the pulses they send through the gas. In their paper, they demonstrate compression to only 1.6 cycles, and single-cycle pulses are within reach of the technique, the researchers say.<\/p>\n<figure id=\"attachment_112088\" style=\"max-width: 200px;\" class=\"figure float-left\"><noscript><img decoding=\"async\" width=\"200\" height=\"300\" class=\"figure-img  img-fluid w-100 size-medium wp-image-112088\" src=\"https:\/\/www.ucf.edu\/news\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-200x300.jpg\" alt=\"John Beetar\" srcset=\"https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-200x300.jpg 200w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-533x800.jpg 533w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-341x512.jpg 341w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-267x400.jpg 267w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-240x360.jpg 240w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web.jpg 800w\" sizes=\"(max-width: 200px) 100vw, 200px\"><\/noscript><img decoding=\"async\" width=\"200\" height=\"300\" class=\"figure-img  img-fluid w-100 size-medium wp-image-112088 lazyload\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20300%22%3E%3C%2Fsvg%3E\" alt=\"John Beetar\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20200%20300%22%3E%3C%2Fsvg%3E 200w\" sizes=\"(max-width: 200px) 100vw, 200px\" data-srcset=\"https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-200x300.jpg 200w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-533x800.jpg 533w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-341x512.jpg 341w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-267x400.jpg 267w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-240x360.jpg 240w, https:\/\/www.ucf.edu\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web.jpg 800w\" data-src=\"https:\/\/www.ucf.edu\/news\/wp-content\/blogs.dir\/20\/files\/2020\/08\/john_beetar02_for_web-200x300.jpg\"><figcaption class=\"figure-caption\">UCF physics doctoral student John Beetar is the lead author of a new study that details a method to make attosecond science more accessible to researchers from all scientific disciplines.<\/figcaption><\/figure>\n<p>The choice of gas and duration of the pulses are key, says John Beetar, a doctoral student in UCF\u2019s Department of Physics and the study\u2019s lead author.<\/p>\n<p>\u201cIf the tube is filled with a molecular gas, and in particular a gas of linear molecules, there can be an enhanced effect due to the tendency of the molecules to align with the laser field,\u201d Beetar says.<\/p>\n<p>\u201cHowever, this alignment-caused enhancement is only present if the pulses are long enough to both induce the rotational alignment and experience the effect caused by it,\u201d he says. \u201cThe choice of gas is important since the rotational alignment time is dependent on the inertia of the molecule, and to maximize the enhancement we want this to coincide with the duration of our laser pulses.\u201d<\/p>\n<p>\u201cThe reduction in complexity associated with using a commercial, industrial-grade laser could make attosecond science more approachable and could enable interdisciplinary applications by scientists with little to no laser background,\u201d Beetar says.<\/p>\n<p>Co-authors of the study also included M. Nrisimha Murty, a preeminent postdoctoral associate in UCF\u2019s Department of Physics; Tran-Chau Truong, a doctoral student in UCF\u2019s Department of Physics;&nbsp; Garima C. Nagar, a graduate student at Binghamton University; Yangyang Liu, a postdoctoral scholar in UCF\u2019s Department of Physics; Jonathan Nesper, a doctoral student in UCF\u2019s Department of Physics; Omar Suarez and Federico Rivas with UCF\u2019s <a href=\"https:\/\/sciences.ucf.edu\/physics\/prep\/\">Central Florida Physics Research Exchange Program<\/a>; Yi Wu, a postdoctoral researcher with joint appointments in UCF\u2019s Department of Physics and UCF\u2019s <a href=\"https:\/\/www.ucf.edu\/college\/optics-photonics\/\">College of Optics and Photonics<\/a>; and Bonggu Shim, an associate professor of physics, applied physics and astronomy at Binghamton University.<\/p>\n<p>Chini received his doctorate in physics from the University of Central Florida and his bachelor\u2019s in physics from McGill University. He has a secondary joint appointment in UCF\u2019s College of Optics and Photonics and joined UCF\u2019s Department of Physics, part of UCF\u2019s <a href=\"https:\/\/www.ucf.edu\/college\/sciences\/\">College of Sciences<\/a>, in 2015.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><em>The ultrafast measurement of the motion of electrons inside<\/em> <em>atoms, molecules and solids at their natural time scale is known as attosecond science and could have important implications in power generation, chemical- and biological-weapon detection, and medical diagnostics.<\/em><\/p>\n","protected":false},"author":199,"featured_media":112082,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"lazy_load_responsive_images_disabled":false,"footnotes":"","_links_to":"","_links_to_target":"","_wp_rev_ctl_limit":""},"categories":[5,23,24],"tags":[981,982,10899,3715],"tu_author":[],"class_list":["post-112022","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-colleges","category-research","category-science-technology","tag-college-of-optics-and-photonics","tag-college-of-sciences","tag-department-of-physics","tag-physics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>UCF Researchers Generate Attosecond Light from Industrial Laser | University of Central Florida News<\/title>\n<meta name=\"description\" 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