{"id":2633,"date":"2016-12-07T09:45:07","date_gmt":"2016-12-07T07:45:07","guid":{"rendered":"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2633"},"modified":"2017-08-01T11:11:15","modified_gmt":"2017-08-01T08:11:15","slug":"%d7%9e%d7%a8%d7%97%d7%99%d7%91-%d7%90%d7%9c%d7%95%d7%9e%d7%94-beam-expander","status":"publish","type":"post","link":"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2633","title":{"rendered":"\u05de\u05e8\u05d7\u05d9\u05d1 \u05d0\u05dc\u05d5\u05de\u05d4 (Beam Expander)"},"content":{"rendered":"<p>\u05e0\u05d9\u05d6\u05db\u05e8 \u05d1\u05de\u05e9\u05d5\u05d5\u05d0\u05d5\u05ea \u05d4\u05d1\u05e1\u05d9\u05e1\u05d9\u05d5\u05ea \u05d4\u05de\u05ea\u05d0\u05e8\u05d5\u05ea \u05d0\u05ea \u05d4\u05ea\u05d1\u05d3\u05e8\u05d5\u05ea \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 (<a href=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=1998\">\u05e8\u05d0\u05d4 \u05e1\u05e2\u05d9\u05e3 7.2<\/a>):<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-2637 size-full\" src=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/wp-content\/uploads\/sites\/25\/2016\/12\/E8s1-1.gif\" alt=\"\\theta =\\frac{d_{2}-d_{1}}{L_{2}-L_{1}}\" width=\"91\" height=\"58\" \/><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><img decoding=\"async\" class=\"alignnone wp-image-2638 size-full\" src=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/wp-content\/uploads\/sites\/25\/2016\/12\/E8s1-2.gif\" alt=\"\\theta =\\frac{1.27\\cdot \\lambda }{d}\" width=\"82\" height=\"42\" \/><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><strong>d<sub>L<\/sub> = L\u03b8+d<\/strong><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><strong>d' = f\u03b8<\/strong><\/p>\n<p><span style=\"color: #8000ff\"><strong>\u05e2\u05dc \u05d9\u05d3\u05d9 \u05d4\u05d2\u05d3\u05dc\u05ea \u05e7\u05d5\u05d8\u05e8 \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 (d), \u05e0\u05d9\u05ea\u05df \u05dc\u05d4\u05e7\u05d8\u05d9\u05df \u05d0\u05ea \u05d6\u05d5\u05d5\u05d9\u05ea \u05d4\u05d4\u05ea\u05d1\u05d3\u05e8\u05d5\u05ea \u05e9\u05dc\u05d4 (\u03b8).<\/strong><\/span><\/p>\n<p>\u05de\u05e8\u05d7\u05d9\u05d1 \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 \u05de\u05d1\u05d5\u05e1\u05e1 \u05e2\u05dc <span style=\"color: #804000\"><strong>\u05d4\u05d8\u05dc\u05e1\u05e7\u05d5\u05e4 \u05e9\u05e4\u05d5\u05ea\u05d7 \u05e2&quot;\u05d9 \u05e7\u05e4\u05dc\u05e8 \u05d1\u05de\u05d0\u05d4 \u05d4 &#8211; 17<\/strong><\/span> (\u05e8\u05d0\u05d4 \u05d0\u05d9\u05d5\u05e8 8.4).<\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-2636 aligncenter\" src=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/wp-content\/uploads\/sites\/25\/2016\/12\/8-4-300x104.gif\" alt=\"\u05de\u05e8\u05d7\u05d9\u05d1 \u05d0\u05dc\u05d5\u05de\u05d4 \u05d4\u05de\u05d1\u05d5\u05e1\u05e1 \u05e2\u05dc \u05d8\u05dc\u05e1\u05e7\u05d5\u05e4 \u05e7\u05e4\u05dc\u05e8\" width=\"300\" height=\"104\" \/><\/p>\n<p style=\"text-align: center\"><strong>\u05d0\u05d9\u05d5\u05e8 8.4: \u05de\u05e8\u05d7\u05d9\u05d1 \u05d0\u05dc\u05d5\u05de\u05d4 \u05d4\u05de\u05d1\u05d5\u05e1\u05e1 \u05e2\u05dc \u05d8\u05dc\u05e1\u05e7\u05d5\u05e4 \u05e7\u05e4\u05dc\u05e8<\/strong><\/p>\n<p>\u05de\u05e9\u05ea\u05de\u05e9\u05d9\u05dd \u05d1\u05e2\u05d3\u05e9\u05d4 \u05d7\u05d9\u05d5\u05d1\u05d9\u05ea \u05e8\u05d0\u05e9\u05d5\u05e0\u05d4 \u05d1\u05e2\u05dc\u05ea \u05e7\u05d5\u05d8\u05e8 \u05e7\u05d8\u05df \u05d5\u05de\u05e8\u05d7\u05e7 \u05de\u05d5\u05e7\u05d3 \u05e7\u05e6\u05e8, \u05d5\u05d0\u05d7\u05e8\u05d9\u05d4 \u05e2\u05d3\u05e9\u05d4 \u05d7\u05d9\u05d5\u05d1\u05d9\u05ea \u05e0\u05d5\u05e1\u05e4\u05ea \u05d1\u05e2\u05dc\u05ea \u05e7\u05d5\u05d8\u05e8 \u05d2\u05d3\u05d5\u05dc \u05d5\u05de\u05e8\u05d7\u05e7 \u05de\u05d5\u05e7\u05d3 \u05d0\u05e8\u05d5\u05da.<\/p>\n<p><span style=\"color: #800080\"><strong>\u05d4\u05de\u05e8\u05d7\u05e7 \u05d1\u05d9\u05df \u05e9\u05ea\u05d9 \u05d4\u05e2\u05d3\u05e9\u05d5\u05ea \u05e9\u05d5\u05d5\u05d4 \u05d1\u05d3\u05d9\u05d5\u05e7 \u05dc\u05e1\u05db\u05d5\u05dd \u05de\u05e8\u05d7\u05e7\u05d9 \u05d4\u05de\u05d5\u05e7\u05d3 \u05e9\u05dc \u05e9\u05ea\u05d9 \u05d4\u05e2\u05d3\u05e9\u05d5\u05ea.<\/strong><\/span><\/p>\n<p>\u05e7\u05e8\u05d9\u05e0\u05ea \u05d4\u05dc\u05d9\u05d9\u05d6\u05e8 \u05e0\u05db\u05e0\u05e1\u05ea \u05dc\u05e2\u05d3\u05e9\u05d4 \u05e2\u05dd \u05d4\u05de\u05d5\u05e7\u05d3 \u05d4\u05e7\u05e6\u05e8, \u05d5\u05de\u05de\u05d5\u05e7\u05d3\u05ea \u05dc\u05d3\u05de\u05d5\u05ea \u05de\u05de\u05e9\u05d9\u05ea \u05d1\u05e0\u05e7\u05d5\u05d3\u05d4 \u05d4\u05e0\u05de\u05e6\u05d0\u05ea \u05d1\u05de\u05d5\u05e7\u05d3 \u05d4\u05e2\u05d3\u05e9\u05d4.<\/p>\n<p>\u05d3\u05de\u05d5\u05ea \u05d6\u05d5 \u05de\u05e9\u05de\u05e9\u05ea \u05db\u05de\u05e7\u05d5\u05e8 \u05e0\u05e7\u05d5\u05d3\u05ea\u05d9 \u05dc\u05e2\u05d3\u05e9\u05d4 \u05d4\u05e9\u05e0\u05d9\u05d4.<\/p>\n<p>\u05d1\u05d9\u05e6\u05d9\u05d0\u05d4 \u05de\u05d4\u05e2\u05d3\u05e9\u05d4 \u05d4\u05e9\u05e0\u05d9\u05d4 \u05de\u05ea\u05e7\u05d1\u05dc\u05ea \u05d0\u05dc\u05d5\u05de\u05d4 \u05d1\u05e7\u05d5\u05d8\u05e8 \u05d2\u05d3\u05d5\u05dc \u05de\u05d4\u05e7\u05d5\u05d8\u05e8 \u05d4\u05de\u05e7\u05d5\u05e8\u05d9, \u05d5\u05d1\u05d4\u05ea\u05d1\u05d3\u05e8\u05d5\u05ea \u05e0\u05de\u05d5\u05db\u05d4 \u05d9\u05d5\u05ea\u05e8.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2641\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49\" src=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/wp-content\/uploads\/sites\/25\/2016\/10\/Buttons_Previous5bCircle5d.png\" alt=\"\u05db\u05e4\u05ea\u05d5\u05e8 &quot;\u05d4\u05e7\u05d5\u05d3\u05dd&quot;\" width=\"148\" height=\"54\" \/><\/a> <a href=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2625\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-48 alignleft\" src=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/wp-content\/uploads\/sites\/25\/2016\/10\/Buttons_Next-5bSquare5d.png\" alt=\"\u05db\u05e4\u05ea\u05d5\u05e8 &quot;\u05d4\u05d1\u05d0&quot;\" width=\"148\" height=\"54\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u05e0\u05d9\u05d6\u05db\u05e8 \u05d1\u05de\u05e9\u05d5\u05d5\u05d0\u05d5\u05ea \u05d4\u05d1\u05e1\u05d9\u05e1\u05d9\u05d5\u05ea \u05d4\u05de\u05ea\u05d0\u05e8\u05d5\u05ea \u05d0\u05ea \u05d4\u05ea\u05d1\u05d3\u05e8\u05d5\u05ea \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 (\u05e8\u05d0\u05d4 \u05e1\u05e2\u05d9\u05e3 7.2): dL = L\u03b8+d d' = f\u03b8 \u05e2\u05dc \u05d9\u05d3\u05d9 \u05d4\u05d2\u05d3\u05dc\u05ea \u05e7\u05d5\u05d8\u05e8 \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 (d), \u05e0\u05d9\u05ea\u05df \u05dc\u05d4\u05e7\u05d8\u05d9\u05df \u05d0\u05ea \u05d6\u05d5\u05d5\u05d9\u05ea \u05d4\u05d4\u05ea\u05d1\u05d3\u05e8\u05d5\u05ea \u05e9\u05dc\u05d4 (\u03b8). \u05de\u05e8\u05d7\u05d9\u05d1 \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 \u05de\u05d1\u05d5\u05e1\u05e1 \u05e2\u05dc \u05d4\u05d8\u05dc\u05e1\u05e7\u05d5\u05e4 \u05e9\u05e4\u05d5\u05ea\u05d7 \u05e2&quot;\u05d9 \u05e7\u05e4\u05dc\u05e8 \u05d1\u05de\u05d0\u05d4 \u05d4 &#8211; &hellip; <a href=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2633\">\u05dc\u05d4\u05de\u05e9\u05da \u05e7\u05e8\u05d9\u05d0\u05d4  <span class=\"meta-nav\">&larr;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-2633","post","type-post","status-publish","format-standard","hentry","category-8-----"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts\/2633"}],"collection":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2633"}],"version-history":[{"count":6,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts\/2633\/revisions"}],"predecessor-version":[{"id":5811,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts\/2633\/revisions\/5811"}],"wp:attachment":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}