{"id":2696,"date":"2019-09-11T09:29:49","date_gmt":"2019-09-11T02:29:49","guid":{"rendered":"http:\/\/www.thucnclaser.com\/?p=2696"},"modified":"2019-09-11T09:29:49","modified_gmt":"2019-09-11T02:29:49","slug":"laser-la-gi","status":"publish","type":"post","link":"http:\/\/www.thucnclaser.com\/?p=2696","title":{"rendered":"Laser l\u00e0 g\u00ec"},"content":{"rendered":"\n

Laser<\/strong> (\u0111\u1ecdc l\u00e0 la-de<\/strong> ho\u1eb7c l\u00e2y-d\u01a1<\/strong>) l\u00e0 t\u00ean vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb L<\/strong>ight A<\/strong>mplification by S<\/strong>timulated E<\/strong>mission of R<\/strong>adiation<\/em> trong ti\u1ebfng Anh<\/a>, c\u00f3 ngh\u0129a l\u00e0 “khu\u1ebfch \u0111\u1ea1i \u00e1nh s\u00e1ng<\/a> b\u1eb1ng ph\u00e1t x\u1ea1 k\u00edch th\u00edch<\/a>“.<\/p>\n\n\n\n

Theo thuy\u1ebft l\u01b0\u1ee3ng t\u1eed<\/a> th\u00ec trong m\u1ed9t nguy\u00ean t\u1eed<\/a>, c\u00e1c electron<\/a> t\u1ed3n t\u1ea1i \u1edf c\u00e1c m\u1ee9c n\u0103ng l\u01b0\u1ee3ng<\/a> ri\u00eang bi\u1ec7t v\u00e0 r\u1eddi r\u1ea1c. C\u00e1c m\u1ee9c n\u0103ng l\u01b0\u1ee3ng c\u00f3 th\u1ec3 hi\u1ec3u l\u00e0 t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c qu\u1ef9 \u0111\u1ea1o ri\u00eang bi\u1ec7t c\u1ee7a electron xung quanh h\u1ea1t nh\u00e2n<\/a>. Electron \u1edf ph\u00eda ngo\u00e0i s\u1ebd c\u00f3 m\u1ee9c n\u0103ng l\u01b0\u1ee3ng cao h\u01a1n nh\u1eefng electron \u1edf ph\u00eda trong. Khi c\u00f3 s\u1ef1 t\u00e1c \u0111\u1ed9ng v\u1eadt l\u00fd<\/a> hay h\u00f3a h\u1ecdc<\/a> t\u1eeb b\u00ean ngo\u00e0i, c\u00e1c electron n\u00e0y c\u0169ng c\u00f3 th\u1ec3 nh\u1ea3y t\u1eeb m\u1ee9c n\u0103ng l\u01b0\u1ee3ng th\u1ea5p l\u00ean m\u1ee9c n\u0103ng l\u01b0\u1ee3ng cao hay ng\u01b0\u1ee3c l\u1ea1i, g\u1ecdi l\u00e0 chuy\u1ec3n d\u1eddi tr\u1ea1ng th\u00e1i. C\u00e1c chuy\u1ec3n d\u1eddi c\u00f3 th\u1ec3 sinh ra hay h\u1ea5p th\u1ee5 l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng hay photon<\/a> theo thuy\u1ebft l\u01b0\u1ee3ng t\u1eed<\/a> c\u1ee7a Albert Einstein<\/a>. B\u01b0\u1edbc s\u00f3ng<\/a> (li\u00ean quan \u0111\u1ebfn m\u00e0u s\u1eafc<\/a>) c\u1ee7a tia s\u00e1ng ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 ch\u00eanh l\u1ec7ch n\u0103ng l\u01b0\u1ee3ng gi\u1eefa c\u00e1c m\u1ee9c.<\/p>\n\n\n\n

C\u00f3 nhi\u1ec1u lo\u1ea1i laser kh\u00e1c nhau, c\u00f3 th\u1ec3 \u1edf d\u1ea1ng h\u1ed7n h\u1ee3p kh\u00ed, v\u00ed d\u1ee5 He<\/a>–Ne<\/a>, hay d\u1ea1ng ch\u1ea5t l\u1ecfng, song c\u00f3 \u0111\u1ed9 b\u1ee9c x\u1ea1 l\u1edbn nh\u1ea5t v\u1eabn l\u00e0 tia laser t\u1ea1o b\u1edfi c\u00e1c linh ki\u1ec7n b\u00e1n d\u1eabn<\/a> nh\u01b0 \u0111i\u1ed1t laser<\/a>.<\/p>\n\n\n\n

Laser c\u00f3 trong r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng, nh\u01b0 l\u00e0m m\u1eaft \u0111\u1ecdc \u0111\u0129a quang CD\/DVD, m\u00e1y in laser, m\u00e1y qu\u00e9t m\u00e3 v\u1ea1ch, c\u00f4ng c\u1ee5 tr\u00ecnh t\u1ef1 DNA, internet c\u00e1p quang, truy\u1ec1n d\u1eef li\u1ec7u trong kh\u00f4ng gian v\u0169 tr\u1ee5, m\u00e1y c\u1eaft, m\u00e1y h\u00e0n, m\u00e1y ph\u1eabu thu\u1eadt laser, t\u1ea9y m\u1ee5n ru\u1ed3i, nh\u1eafm b\u1eb1ng laser. Trong qu\u00e2n \u0111\u1ed9i laser \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u00e1nh d\u1ea5u, \u0111o kho\u1ea3ng c\u00e1ch v\u00e0 t\u1ed1c \u0111\u1ed9 c\u1ee7a m\u1ee5c ti\u00eau. Trong gi\u1ea3i tr\u00ed laser \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c s\u00e2n kh\u1ea5u nh\u01b0 h\u00f2a \u00e2m \u00e1nh s\u00e1ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Laser (\u0111\u1ecdc l\u00e0 la-de ho\u1eb7c l\u00e2y-d\u01a1) l\u00e0 t\u00ean vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb Light Amplification by Stimulated Emission of Radiation trong ti\u1ebfng Anh, c\u00f3 ngh\u0129a l\u00e0 “khu\u1ebfch \u0111\u1ea1i \u00e1nh s\u00e1ng b\u1eb1ng ph\u00e1t x\u1ea1 k\u00edch th\u00edch“. Theo thuy\u1ebft l\u01b0\u1ee3ng t\u1eed th\u00ec trong m\u1ed9t nguy\u00ean t\u1eed, c\u00e1c electron t\u1ed3n t\u1ea1i \u1edf c\u00e1c m\u1ee9c n\u0103ng l\u01b0\u1ee3ng ri\u00eang bi\u1ec7t v\u00e0 r\u1eddi r\u1ea1c. C\u00e1c m\u1ee9c n\u0103ng l\u01b0\u1ee3ng c\u00f3 th\u1ec3 hi\u1ec3u l\u00e0 t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c qu\u1ef9 \u0111\u1ea1o ri\u00eang bi\u1ec7t c\u1ee7a electron […]\n","protected":false},"author":1,"featured_media":2561,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=\/wp\/v2\/posts\/2696"}],"collection":[{"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2696"}],"version-history":[{"count":2,"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=\/wp\/v2\/posts\/2696\/revisions"}],"predecessor-version":[{"id":2700,"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=\/wp\/v2\/posts\/2696\/revisions\/2700"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=\/wp\/v2\/media\/2561"}],"wp:attachment":[{"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2696"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.thucnclaser.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}