{"id":11028,"date":"2017-06-08T23:22:23","date_gmt":"2017-06-08T14:22:23","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=11028"},"modified":"2020-08-04T15:55:31","modified_gmt":"2020-08-04T06:55:31","slug":"avalahcne-photodiode-%ec%8a%a4%ed%8e%99-%eb%b3%b4%ea%b8%b03","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=11028","title":{"rendered":"Avalanche photodiode \uc2a4\ud399 \ubcf4\uae30(3)"},"content":{"rendered":"<p>\uc774\uc5b4\uc11c \uc591\uc790 \ud6a8\uc728\uc5d0 \uad00\ud55c \uc774\uc57c\uae30\ub97c \ud574 \ubcf4\ub3c4\ub85d \ud558\uaca0\ub2e4.<\/p>\n<p>Quantum efficiency<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"11030\" data-permalink=\"http:\/\/melotopia.net\/b\/?attachment_id=11030\" data-orig-file=\"https:\/\/i0.wp.com\/melotopia.net\/b\/wp-content\/uploads\/2017\/06\/qe.png?fit=596%2C575\" data-orig-size=\"596,575\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"qe\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/melotopia.net\/b\/wp-content\/uploads\/2017\/06\/qe.png?fit=596%2C575\" class=\"size-full wp-image-11030 aligncenter\" src=\"https:\/\/i0.wp.com\/melotopia.net\/b\/wp-content\/uploads\/2017\/06\/qe.png?resize=596%2C575\" alt=\"\" width=\"596\" height=\"575\" srcset=\"https:\/\/i0.wp.com\/melotopia.net\/b\/wp-content\/uploads\/2017\/06\/qe.png?w=596 596w, https:\/\/i0.wp.com\/melotopia.net\/b\/wp-content\/uploads\/2017\/06\/qe.png?resize=300%2C289 300w\" sizes=\"auto, (max-width: 596px) 100vw, 596px\" \/><\/p>\n<p>\uc774\uac83\uc740 \uc544\uc8fc \uac04\ub2e8\ud55c \uac1c\ub150\uc774\uace0, \uc704\uc5d0\uc11c \uc124\uba85\ud55c \uc2a4\ud399\ud2b8\ub7fc\uc5d0 \ub300\ud55c \ubbfc\uac10\ub3c4\uc640 \uad00\ub828\uc774 \uc788\ub294 \uc591\uc774\ub2e4. QE\ub294 \uac04\ub2e8\ud788 \ub9d0\ud558\uba74, \ub4e4\uc5b4\uc628 \ube5b \uc911\uc5d0\uc11c \uba87%\ub098 \uc804\ub958\ub85c \ubcc0\ud658\ub418\uc5c8\ub294\uac00\uc5d0 \ub300\ud55c \uac12\uc774\ub2e4. \ud2b9\ud788, \ub4e4\uc5b4\uc628 \uad11\uc790\uc758 \uc218\uc640 \ubc29\ucd9c\ub41c \uc804\uc790\uc758 \uc218\uc758 \ube44\uc728\uc744 \ub73b\ud55c\ub2e4. \uac00\ub839 QE\uac00 50%\ub77c\ub294 \uac83\uc740 100\uac1c\uc758 \uad11\uc790\uac00 \ub4e4\uc5b4\uc654\uc744 \ub54c \ub0b4\ub193\ub294 \uc804\uc790\uc758 \uc218\uac00 50\uac1c\ub77c\ub294 \ub73b\uc774\ub2e4. \ubb3c\ub860 \uc544\uc8fc \uc88b\uc740, \uc774\uc0c1\uc801\uc778 PD\uc758 \uacbd\uc6b0 100%\uaca0\uc9c0\ub9cc, \ubc18\ub3c4\uccb4 \ub0b4\ubd80\uc758 \uc5ec\ub7ec \uc0ac\uc815\uc774 \uc788\uae30 \ub54c\ubb38\uc5d0 100%\uc758 QE\ub294 \ubd88\uac00\ub2a5\ud558\ub2e4.<\/p>\n<p>QE\ub294 \ub0b4\ubd80QE(Internal QE, IQE)\uc640 \uc678\ubd80 QE(External QE, EQE)\ub85c \uad6c\ubd84\ub418\ub294\ub370, \uc5b4\ub824\uc6b4 \uac1c\ub150\uc740 \uc544\ub2c8\ub2e4. EQE\ub294 \uc678\ubd80\uc5d0\uc11c \ub4e4\uc5b4\uc628 \ube5b \uc804\uccb4\uc5d0 \ub300\ud574\uc11c \uc804\uc790\ub85c \ubcc0\ud658\ub41c \ud6a8\uc728\uc744 \ub9d0\ud558\uba70, \ud1b5\uc0c1\uc801\uc73c\ub85c \uc6b0\ub9ac\uac00 \uace0\ub824\ud574\uc57c \ud558\ub294 QE\uac00 \ub41c\ub2e4. IQE\ub294 \ud761\uc218\ub41c \uad11\uc790\uc5d0 \ub300\ud574\uc11c \uc804\uc790\ub85c \ubcc0\ud658\ub41c \ud6a8\uc728\uc744 \ub9d0\ud558\uba70, \ubc18\uc0ac\ub418\uac70\ub098 \ud22c\uacfc\ud55c \uad11\uc790\ub294 \ube7c\uace0 \uacc4\uc0b0\ud55c\ub2e4. \ub2f9\uc5f0\ud788 IQE\ub294 EQE\ubcf4\ub2e4 \ub192\ub2e4.<\/p>\n<p>\ub9cc\uc57d \ub2e8\uc77c \uad11\uc790 \ud558\ub098\ud558\ub098\ub97c \uce21\uc815\ud574\uc57c \ud558\ub294 \uacbd\uc6b0, \ub300\uccb4\ub85c APD\ub97c \ub9ce\uc774 \uc4f0\ub294\ub370, \uc774\ub7f0 \uacbd\uc6b0\uc5d0\ub294 QE\uac00 \uc911\uc694\ud55c \uace0\ub824 \uc0ac\ud56d\uc774 \ub420 \uc218\uac00 \uc788\ub2e4. \uc65c\ub0d0\ud558\uba74 \uad11\uc790\uac00 \uba87\uac1c \uc5c6\uc73c\ub2c8\uae4c \ub193\uce58\uba74 \uace4\ub780\ud558\uae30 \ub54c\ubb38\uc774\ub2e4. \ud2b9\ud788, \uac00\uc2dc\uad11\uc120 \uc601\uc5ed\uc5d0\uc11c\ub294 \uadf8\ub798\ub3c4 80%\uc5d0 \ub2ec\ud558\ub294 QE\uac00 \ub098\uc624\ub294 APD\uac00 \uc788\uc9c0\ub9cc, \uadfc\uc801\uc678\uc120 \uc601\uc5ed(1550nm\ub300\uc5ed)\uc5d0\uc11c\ub294 \uc798\ud574\uc57c 25%\uc815\ub3c4\uac00 \ucd5c\uc120\uc758 QE\uc774\ub2e4. \ud55c\uac00\uc9c0 \ub367\ubd99\uc774\uc790\uba74, \ucd08\uc804\ub3c4\uccb4 \ub098\ub178\uc120 PD(Superconducting Nanowire Single photon detector, SNSPD)\uc758 \uacbd\uc6b0 \uadfc\uc801\uc678\uc120 \uc601\uc5ed\uc5d0\uc11c\ub3c4 80%\ub77c\ub294 \uc774\uc57c\uae30\uac00 \uc788\ub2e4.<\/p>\n<p><a href=\"http:\/\/www.scontel.ru\/products\/sspd\/\">http:\/\/www.scontel.ru\/products\/sspd\/<\/a><\/p>\n<p>SNSPD\ub294 APD\ub791\uc740 \ub2e4\ub978 \uc6d0\ub9ac\ub97c \uc774\uc6a9\ud558\uba70, \ubb3c\ub860 \ucd08\uc804\ub3c4\uccb4\ub97c \uc0ac\uc6a9\ud558\ubbc0\ub85c \ubc18\ub3c4\uccb4\ub97c \uc0ac\uc6a9\ud55c APD\uc640\ub294 \ud2b9\uc131\uc774 \ub2e4\ub974\ub2e4.<\/p>\n<p>\uc790\uc2e0\uc774 \ud574\uc57c \ud558\ub294 \uc2e4\ud5d8\uc5d0\uc11c \ud544\uc694\ud55c QE\uac00 \uc5bc\ub9c8\uc5ec\uc57c \ud558\ub294\uc9c0 \uc0dd\uac01\ud574 \ubcf4\ub3c4\ub85d \ud558\uc790. \ud2b9\ud788, Loop-hole free Bell measurement\ub97c \ud558\uae30 \uc704\ud574\uc11c\ub294 \ub192\uc740 QE\uac00 \ud544\uc694\ud558\ub2e4. \uadf8 \uc678\uc5d0\ub3c4, \uace0\uc18d\/\uc7a5\uac70\ub9ac \uc591\uc790 \uc554\ud638\ud0a4 \ubd84\ubc30\ub97c \uc704\ud574\uc11c\ub3c4 \ub2f9\uc5f0\ud788 QE\uac00 \ub192\uc740 PD\ub97c \uc4f0\ub294 \uac83\uc774 \uc88b\ub2e4.<\/p>\n<p>\uc774\uc81c \uae00\uc774 \uae38\uc5b4\uc9c0\uba74\uc11c \ud55c\ubc88\uc5d0 \uae38\uac8c \uc4f0\uae30\ubcf4\ub2e4\ub294 \ud56d\ubaa9\ubcc4\ub85c \ucabc\uac1c\uc11c \uc4f0\ub294 \uac83\uc774 \uc88b\ub2e4\ub294 \uac83\uc744 \uc54c\uc558\ub2e4. \ud55c\ubc88\uc5d0 \ud55c \ud56d\ubaa9\ub9cc \uc4f0\ub3c4\ub85d \ud558\uaca0\ub2e4. \ub2e4\uc74c \uae00\uc5d0 \uacc4\uc18d&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc774\uc5b4\uc11c \uc591\uc790 \ud6a8\uc728\uc5d0 \uad00\ud55c \uc774\uc57c\uae30\ub97c \ud574 \ubcf4\ub3c4\ub85d \ud558\uaca0\ub2e4. Quantum efficiency \uc774\uac83\uc740 \uc544\uc8fc \uac04\ub2e8\ud55c \uac1c\ub150\uc774\uace0, \uc704\uc5d0\uc11c \uc124\uba85\ud55c \uc2a4\ud399\ud2b8\ub7fc\uc5d0 \ub300\ud55c \ubbfc\uac10\ub3c4\uc640 \uad00\ub828\uc774 \uc788\ub294 \uc591\uc774\ub2e4. QE\ub294 \uac04\ub2e8\ud788 \ub9d0\ud558\uba74, \ub4e4\uc5b4\uc628 \ube5b \uc911\uc5d0\uc11c \uba87%\ub098 \uc804\ub958\ub85c \ubcc0\ud658\ub418\uc5c8\ub294\uac00\uc5d0 \ub300\ud55c \uac12\uc774\ub2e4. \ud2b9\ud788, \ub4e4\uc5b4\uc628 \uad11\uc790\uc758 \uc218\uc640 \ubc29\ucd9c\ub41c \uc804\uc790\uc758 \uc218\uc758 \ube44\uc728\uc744 \ub73b\ud55c\ub2e4. \uac00\ub839 QE\uac00 50%\ub77c\ub294 \uac83\uc740 100\uac1c\uc758 \uad11\uc790\uac00 \ub4e4\uc5b4\uc654\uc744 \ub54c \ub0b4\ub193\ub294 \uc804\uc790\uc758 \uc218\uac00 50\uac1c\ub77c\ub294 \ub73b\uc774\ub2e4. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-11028","post","type-post","status-publish","format-standard","hentry","category-diary"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2RS","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/11028","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11028"}],"version-history":[{"count":2,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/11028\/revisions"}],"predecessor-version":[{"id":12318,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/11028\/revisions\/12318"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11028"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}