{"id":450,"date":"2018-03-27T01:57:47","date_gmt":"2018-03-27T01:57:47","guid":{"rendered":"https:\/\/budker.uni-mainz.de\/?p=450"},"modified":"2018-11-20T10:56:45","modified_gmt":"2018-11-20T10:56:45","slug":"shooting-a-laser-into-the-sky-and-picking-up-the-light-of-excited-sodium-atoms","status":"publish","type":"post","link":"https:\/\/budker.uni-mainz.de\/?p=450","title":{"rendered":"Shooting a laser into the sky and picking up the light of excited sodium atoms"},"content":{"rendered":"<p>We demonstrate a method of remote magnetic field measurements in the mesosphere using a laser beam with intensity modulation at the Larmor frequency of sodium, achieving an accuracy of 0.28 mG\/\u221a Hz. This is useful as a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Laser_guide_star\">laser guide star<\/a> bright enhancement method\u00a0and as a remote\u00a0sensing device for magnetic fields in the mesosphere.<\/p>\n<p><a href=\"https:\/\/arxiv.org\/abs\/1802.04686\">https:\/\/arxiv.org\/abs\/1802.04686<\/a><\/p>\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41467-018-06396-7\">Nature communications<\/a><\/p>\n<p><a href=\"http:\/\/www.uni-mainz.de\/presse\/aktuell\/6769_ENG_HTML.php\">Press release<\/a><\/p>\n<p><a href=\"https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2018\/03\/1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-451\" src=\"https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2018\/03\/1.png\" alt=\"\" width=\"703\" height=\"558\" srcset=\"https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2018\/03\/1.png 703w, https:\/\/budker.uni-mainz.de\/wp-content\/uploads\/2018\/03\/1-300x238.png 300w\" sizes=\"auto, (max-width: 703px) 100vw, 703px\" \/><\/a>Picture: The laser shooting at the sky. A bright spot of\u00a0sodium fluorescence in the mesosphere is seen in the center of the picture, along with the star HIP113889 (on the left). Above: The intensity of the fluorescent spot\u00a0as a function of the\u00a0angular distance from the spot&#8217;s center. The laser plume on the right side is due to Rayleigh scattering in the first 20 km of the atmosphere, while the fluorescent sodium is localized at an altitude of 90\u2013100 km.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We demonstrate a method of remote magnetic field measurements in the mesosphere using a laser beam with intensity modulation at the Larmor frequency of sodium, achieving an accuracy of 0.28 mG\/\u221a Hz. This is useful as a laser guide star bright enhancement method\u00a0and as a remote\u00a0sensing device for magnetic fields in the mesosphere. https:\/\/arxiv.org\/abs\/1802.04686 Nature [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1],"tags":[],"class_list":["post-450","post","type-post","status-publish","format-standard","hentry","category-default"],"_links":{"self":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts\/450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=450"}],"version-history":[{"count":2,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts\/450\/revisions"}],"predecessor-version":[{"id":605,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=\/wp\/v2\/posts\/450\/revisions\/605"}],"wp:attachment":[{"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/budker.uni-mainz.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}