{"id":7373,"date":"2010-03-24T14:03:00","date_gmt":"2010-03-24T12:03:00","guid":{"rendered":""},"modified":"2010-03-24T14:03:00","modified_gmt":"2010-03-24T12:03:00","slug":"New light on laser principles: first measurement of the intrinsic linewidth of a QCL.","status":"publish","type":"post","link":"https:\/\/www.ino.cnr.it\/?p=7373","title":{"rendered":"New light on laser principles: first measurement of the intrinsic linewidth of a QCL."},"content":{"rendered":"<p><img decoding=\"async\" src=\"http:\/\/fox.ino.it\/AllegatiPubblici\/Nuovo\/Ricerca63.jpg\" class=\"alignnone size-full\" \/><\/p>\n<p>Since the advent of the first laser, the spectral purity of these devices was assumed to be limited by the unavoidable presence of spontaneous emission, as elegantly expressed by the Schawlow-Townes formula.<br \/>\nIndeed, this limit does not apply to Quantum Cascade Lasers (QCLs), according to CNR-INO researchers that have directly measured the intrinsic linewidht of a QCL. They provided the first experimental confirmation of a new theory, that predicts the overcoming of this limit and the achievement of an exceptional intrinsic spectral purity.<\/p>\n<p>Visit the explicative <a href=\"\">Web page<\/a><\/p>\n<p>News by Bartalini Saverio<\/p>\n","protected":false},"excerpt":{"rendered":"<p>First observation of the intrinsic linewidth of a Quantum Cascade Laser.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-7373","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/posts\/7373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7373"}],"version-history":[{"count":0,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=\/wp\/v2\/posts\/7373\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ino.cnr.it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}