{"id":679441,"date":"2010-03-02T03:05:55","date_gmt":"2010-03-02T08:05:55","guid":{"rendered":"http:\/\/davidkirkpatrick.wordpress.com\/?p=6903"},"modified":"2010-03-02T03:05:55","modified_gmt":"2010-03-02T08:05:55","slug":"happy-50th-birthday-to-the-laser","status":"publish","type":"post","link":"https:\/\/mereja.com\/index\/679441","title":{"rendered":"Happy 50th birthday to the laser"},"content":{"rendered":"<p>Lasers are just cool, and now they have been for fifty years. Hit the link for <a href=\"http:\/\/www.technologyreview.com\/computing\/24594\/?nlid=2784&amp;a=f\" >photos and a thorough Technology Review history<\/a> on controlling excited photons.<\/p>\n<p>From the link:<\/p>\n<blockquote>\n<p>This year is the 50th anniversary of the laser, a device used in applications from performing precise surgical procedures to measuring gravitational waves. In 1917, Albert Einstein proposed that a photon hitting an atom in a high energy state would cause the atom to release a second photon identical in frequency and direction to the first. In the 1950s, scientists searched for a way to achieve this stimulated emission and amplify it so that a group of excited atoms would release photons in a chain reaction. In 1959, American physicist Gordon Gould publicly used the term \u201clight amplification by stimulated emission of radiation\u201d for the first time. A year later, scientists demonstrated the first working optical laser.<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.technologyreview.com\/files\/37348\/0210-Photo-Essay-A-R1_x600.jpg?w=780\" alt=\"\" \/><br \/>\nCredit: HRL Laboratories<\/p>\n<\/blockquote>\n<p>  <a rel=\"nofollow\" href=\"http:\/\/feeds.wordpress.com\/1.0\/gocomments\/davidkirkpatrick.wordpress.com\/6903\/\"><img decoding=\"async\" alt=\"\" border=\"0\" src=\"http:\/\/feeds.wordpress.com\/1.0\/comments\/davidkirkpatrick.wordpress.com\/6903\/\" \/><\/a> <a rel=\"nofollow\" href=\"http:\/\/feeds.wordpress.com\/1.0\/godelicious\/davidkirkpatrick.wordpress.com\/6903\/\"><img decoding=\"async\" alt=\"\" border=\"0\" src=\"http:\/\/feeds.wordpress.com\/1.0\/delicious\/davidkirkpatrick.wordpress.com\/6903\/\" \/><\/a> <a rel=\"nofollow\" href=\"http:\/\/feeds.wordpress.com\/1.0\/gostumble\/davidkirkpatrick.wordpress.com\/6903\/\"><img decoding=\"async\" alt=\"\" border=\"0\" src=\"http:\/\/feeds.wordpress.com\/1.0\/stumble\/davidkirkpatrick.wordpress.com\/6903\/\" \/><\/a> <a rel=\"nofollow\" href=\"http:\/\/feeds.wordpress.com\/1.0\/godigg\/davidkirkpatrick.wordpress.com\/6903\/\"><img decoding=\"async\" alt=\"\" border=\"0\" src=\"http:\/\/feeds.wordpress.com\/1.0\/digg\/davidkirkpatrick.wordpress.com\/6903\/\" \/><\/a> <a rel=\"nofollow\" href=\"http:\/\/feeds.wordpress.com\/1.0\/goreddit\/davidkirkpatrick.wordpress.com\/6903\/\"><img decoding=\"async\" alt=\"\" border=\"0\" src=\"http:\/\/feeds.wordpress.com\/1.0\/reddit\/davidkirkpatrick.wordpress.com\/6903\/\" \/><\/a> <img data-recalc-dims=\"1\" decoding=\"async\" alt=\"\" border=\"0\" src=\"https:\/\/i0.wp.com\/stats.wordpress.com\/b.gif?w=780\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lasers are just cool, and now they have been for fifty years. Hit the link for photos and a thorough Technology Review history on controlling excited photons. From the link: This year is the 50th anniversary of the laser, a device used in applications from performing precise surgical procedures to measuring gravitational waves. In 1917, [&hellip;]<\/p>\n","protected":false},"author":2563,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4821],"tags":[],"class_list":["post-679441","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p9NivD-2QKJ","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/posts\/679441","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/users\/2563"}],"replies":[{"embeddable":true,"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/comments?post=679441"}],"version-history":[{"count":0,"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/posts\/679441\/revisions"}],"wp:attachment":[{"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/media?parent=679441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/categories?post=679441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereja.com\/index\/wp-json\/wp\/v2\/tags?post=679441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}