https:\/\/www.edmundoptics.com\/testing-detection\/detectors\/avalanche-photodiodes\/<\/a><\/p>\n\uc904\uc5ec\uc11c APD\ub77c\uace0 \ud558\ub294\ub370, \uad11\uc790 1\uac1c\ub97c \uce21\uc815\ud560 \uc218 \uc788\ub294 \uc7a5\uce58\uc911\uc758 \ud558\ub098\ub2e4. \uad11\uc790 1\uac1c\ub97c \uce21\uc815\ud560 \uc218 \uc788\ub294 \uc7a5\uce58\ub97c \ub2e8\uad11\uc790 \uac80\ucd9c\uae30(Single photon detector, SPD)\ub77c\uace0 \ubd80\ub974\ub294\ub370, \uadf8\uc911 \ud2b9\ubcc4\ud788 APD\ub97c \uac16\uace0\uc11c Single photon avalanche detector(SPAD)\ub77c\uace0 \ubd80\ub974\uae30\ub3c4 \ud55c\ub2e4. SPD\uc5d0\ub294 APD\ub9cc \uc788\ub294 \uac83\uc740 \uc544\ub2c8\uace0, \uad11\uc804\uc99d\ubc30\uad00(Photo-multiplier tube, PMT)\uc774\ub098 Micro-channel plate(MCP)\ub4f1\uc774 \uc788\ub2e4. \ub2e4\ub4e4 \uac01\uc790\uc758 \uc4f0\uc784\uc0c8\uc640 \uc804\ubb38\ubd84\uc57c\uac00 \uc788\ub294\ub370, \uc624\ub298\uc740 \uadf8\uc911 APD\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\ub824\uace0 \ud55c\ub2e4.<\/p>\n
Avalanche photodiode\uc5d0\uc11c Avalanche\ub294 “\ub208\uc0ac\ud0dc”\ub77c\ub294 \ub73b\uc774\ub2e4. \uadf8\uc57c\ub9d0\ub85c \ub208\uc0ac\ud0dc\uac00 \uc77c\uc5b4\ub098\ub4ef\uc774 \uc804\uc790\uc758 \uc99d\ud3ed \uc791\uc6a9\uc774 \uc77c\uc5b4\ub098\uae30 \ub54c\ubb38\uc5d0 \ubd99\uc5ec\uc9c4 \uc774\ub984\uc774\ub2e4. \ucc38\uace0\ub85c \ud55c\uad6d\uc5b4 \uc704\ud0a4\ubc31\uacfc\uc5d0\ub294 “\uc804\uc790\uc0ac\ud0dc \uad11\ub2e4\uc774\uc624\ub4dc”\ub77c\uace0 \ub098\uc640 \uc788\uc73c\ubbc0\ub85c \ucc38\uace0\ud558\ub3c4\ub85d \ud558\uc790.<\/p>\n
\uc77c\ub2e8 APD\ub3c4 PD\uc758 \uc77c\uc885\uc774\ubbc0\ub85c photodiode\uac00 \uc5b4\ub5bb\uac8c \uc2e0\ud638\ub97c \ub9cc\ub4e4\uc5b4\ub0b4\ub294\uc9c0 \uc54c\uc544\uc57c \ud558\ub294\ub370, \uc0ac\uc2e4 \uc5b4\ub824\uc6b8 \uac83\uc740 \uc5c6\ub2e4. PD\ub294 \uc77c\ub2e8 \uadf8 \uc774\ub984\uc5d0\uc11c \uc54c \uc218 \uc788\ub4ef\uc774 diode\uc774\ub2e4. diode\ub294 2\uac00\uc9c0 \uc885\ub958\uc758 \ubc18\ub3c4\uccb4\ub85c \uad6c\uc131\ub418\ub294\ub370, \uadf8 \uae30\ubc18\uc774 \ub418\ub294 \ubc18\ub3c4\uccb4 \ubb3c\uc9c8\uc740 \uac19\uc9c0\ub9cc \ud55c\ucabd\uc740 \uc591\uacf5(hole)\uc774 \ub9ce\uc740 p\ud615 \ubc18\ub3c4\uccb4\uc774\uace0, \ub2e4\ub978\ucabd\uc740 \uc804\uc790(electron)\uac00 \ub9ce\uc740 n\ud615 \ubc18\ub3c4\uccb4\ub85c \ub418\uc5b4 \uc788\ub2e4. \uc989, p-n \uc811\ud569\uc774 \ub418\uc5b4 \uc788\ub2e4. p-n\uc811\ud569\uc774 \ub418\uc5b4 \uc788\ub294 \ubc18\ub3c4\uccb4\ub294 \uc804\uc555\uc774 \uc5b4\ub290 \ubc29\ud5a5\uc73c\ub85c \uac78\ub9ac\uac8c \ub418\ub290\ub0d0\uc5d0 \ub530\ub77c \uc800\ud56d\uc774 \ub2ec\ub77c\uc9c0\ub294\ub370, p\ud615\uc5d0 \ub192\uc740 \uc804\uc555\uc774 \uac78\ub9ac\uba74 \uc804\ub958\uac00 \uc798 \ud750\ub974\uace0(=\uc800\ud56d\uc774 \uc791\uace0, \uc815\ubc29\ud5a5) \ubc18\ub300\ub85c n\ud615\uc5d0 \ub192\uc740 \uc804\uc555\uc774 \uac78\ub9ac\uba74 \uc804\ub958\uac00 \uc798 \ud750\ub974\uc9c0 \uc54a\ub294\ub2e4(=\uc800\ud56d\uc774 \ud06c\ub2e4, \uc5ed\ubc29\ud5a5). \uadf8\ub9ac\uace0 \uadf8\ub7ec\ub2e4\uac00 n\ud615\uc5d0 \ub108\ubb34 \ub192\uc740 \uc804\uc555\uc774 \uac78\ub9ac\uba74 \uc808\uc5f0 \ud30c\uad34 \ud604\uc0c1\uc774 \uc77c\uc5b4\ub098\uc11c \uc804\ub958\uac00 \uc624\ud788\ub824 \uc798 \ud750\ub974\ub294 \ud604\uc0c1\uc774 \ub098\ud0c0\ub09c\ub2e4.(Breakdown)<\/p>\n
PD\uc758 \uc791\ub3d9\uc740 \uc5ed\ubc29\ud5a5\uc758 \uc804\uc555\uc774 \uac78\ub9ac\ub294 \uc0c1\ud669\uc774 \ud544\uc694\ud558\ub2e4. \uc5ed\ubc29\ud5a5\uc758 \uc804\uc555\uc774 \uac78\ub824 \uc788\ub2e4\ub294 \ub73b\uc740 p\ud615 \ubc18\ub3c4\uccb4\uc5d0 \ub0ae\uc740 \uc804\uc555\uc774 \uac78\ub824 \uc788\ub2e4\ub294 \ub73b\uc774\ub2e4. \uc774 \uacbd\uc6b0, \uc591\uacf5\uc774 p\ud615 \ubc18\ub3c4\uccb4\ub97c \ud5a5\ud574 \ub2ec\ub824\uac00\uc57c \ud558\uc9c0\ub9cc p\ud615 \ubc18\ub3c4\uccb4\uc5d0\ub294 \uc774\ubbf8 \uc591\uacf5\uc774 \ub9ce\uc774 \uc874\uc7ac \ud558\uae30 \ub54c\ubb38\uc5d0 \uadf8\ub807\uac8c \ub418\uae30\uac00 \uc5b4\ub835\ub2e4. \uc989, \uc804\uc555\uc740 \uac78\ub824 \uc788\uc9c0\ub9cc \uc804\ub958\uac00 \ud750\ub974\uc9c0 \uc54a\ub294 \uc774\uc81c, \uc774 \uc0c1\ud669\uc5d0\uc11c \ub2e4\uc774\uc624\ub4dc\uc5d0 \ube5b\uc774 \ub4e4\uc5b4\uac04\ub2e4\uace0 \ud574 \ubcf4\uc790. \ube5b\uc774 \ub2e4\uc774\uc624\ub4dc\uc5d0 \ub4e4\uc5b4\uac00\uba74, \ud2b9\ud788 \uadf8\uc911\uc5d0\uc11c\ub3c4 \ubc18\ub3c4\uccb4\uc758 \ub760\ud2c8(bandgap)\ubcf4\ub2e4 \ud070 \uc5d0\ub108\uc9c0\ub97c \uac00\uc9c0\ub294 \ube5b\uc774 \ub2e4\uc774\uc624\ub4dc\uc5d0 \ub4e4\uc5b4\uac00\uba74, \ubc18\ub3c4\uccb4 \ub0b4\ubd80\uc758 \uc5b4\ub290 \uc801\ub2f9\ud55c \uc9c0\uc810\uc5d0\uc11c \ud761\uc218\ub41c \ube5b\uc740 \uc804\uc790\uc640 \uc591\uacf5\uc758 \uc30d\uc744 \ub9cc\ub4e4\uc5b4 \ub0b8\ub2e4. \ubc29\uae08 \ub9d0\ud588\ub4ef\uc774, \ube5b\uc774 \ub4e4\uc5b4\uac00\uae30 \uc774\uc804\uc758 \ubc18\ub3c4\uccb4 \ub0b4\ubd80\uc5d0\ub294 \uc804\ub958\uac00 \ud750\ub974\uc9c0 \uc54a\uace0 \uc788\uc5c8\ub2e4. \ub2e4\uc2dc \ub9d0\ud574\uc11c \uc804\uc790\uc640 \uc591\uacf5\uc774 \ud558\ub098\ub3c4 \uc5c6\uc5c8\ub2e4\ub294 \ub73b\uc774\ub2e4. \ud558\uc9c0\ub9cc \ube5b\uc774 \ud761\uc218\ub418\uba74\uc11c \ub9cc\ub4e4\uc5b4 \ub0b8 \uc804\uc790\uc640 \uc591\uacf5\uc740, \uadf8 \uc6d0\uc778\uc774\uc57c \uc5b4\uca0c\ub4e0 “\ubc18\ub3c4\uccb4 \ub0b4\ubd80\uc5d0 \uc874\uc7ac\ud558\ub294” \uc804\uc790\uc640 \uc591\uacf5\uc774\ub2e4. \ub530\ub77c\uc11c \uc804\uc555\uc744 \ub530\ub77c\uc11c \ud758\ub7ec\uac08 \uc218 \uc788\uace0, \uc774\uac83\uc740 \ub2e4\uc774\uc624\ub4dc\uc5d0\uc11c \uc804\ub958\ub85c \ub098\ud0c0\ub09c\ub2e4. \uc774 \uc804\ub958\ub294 \ube5b\uc774 \ub354\uc774\uc0c1 \ud761\uc218\ub418\uc9c0 \uc54a\uac8c \ub418\uba74 \uc0c8\ub85c\uc6b4 \uc804\uc790\uc640 \uc591\uacf5\uc774 \uc0dd\uc131\ub418\uc9c0 \uc54a\uc73c\ubbc0\ub85c \uba48\ucd94\uac8c \ub41c\ub2e4. \ub610\ud55c, \ube5b\uc758 \uc138\uae30\uac00 \uc140 \uc218\ub85d \uc804\uc790\uc640 \uc591\uacf5\uc758 \uc30d\uc774 \ub354 \ub9ce\uc774 \uc0dd\uc131\ub418\ubbc0\ub85c \ub354 \ud070 \uc804\ub958\uac00 \ud750\ub974\uac8c \ub41c\ub2e4. \uc989, \uc804\ub958\uc758 \uc138\uae30\uc640 \ube5b\uc758 \uc138\uae30\ub294 \ube44\ub840\ud55c\ub2e4. \uac19\uc740 \uc804\uc555\uc5d0\uc11c \uc804\ub958\uc758 \ud06c\uae30\ub294 \uc800\ud56d\uc744 \uacb0\uc815\ud558\uac8c \ub418\ubbc0\ub85c, \uac04\ub2e8\ud55c \ube0c\ub9bf\uc9c0 \ud68c\ub85c\ub97c \uafb8\uba70\uc11c \uc774 \ub2e4\uc774\uc624\ub4dc\uc758 \uc800\ud56d\uc744 \uacb0\uc815\ud558\uba74 \uc6b0\ub9ac\ub294 \uc774 \ub2e4\uc774\uc624\ub4dc\uc5d0 \ub4e4\uc5b4\uc628 \ube5b\uc758 \uc591\uc744 \uc54c \uc218 \uc788\uac8c \ub418\ub294 \uac83\uc774\ub2e4.<\/p>\n
\uc790, \uadf8\ub7fc \uc774\uc81c APD\uc758 \uc791\ub3d9\uc744 \uc54c\uc544\ubcf4\uc790. APD\ub294 \uc880 \ub354 \uac15\ud55c \uc5ed\uc804\uc555\uc774 \uac78\ub824 \uc788\ub294 \uc0c1\ud669\uc5d0\uc11c \uc791\ub3d9\ud55c\ub2e4. \uc0ac\uc2e4 \uc704\uc5d0\uc11c PD\uac00 \uc801\ub2f9\ud55c \uc5ed\uc804\uc555\uc774 \uac78\ub824 \uc788\ub294 \uc0c1\ud0dc\uc5d0\uc11c \uc791\ub3d9\ud55c\ub2e4\uba74, \ube5b\uc774 \uc57d\ud574\uc11c \uc804\uc790\uc640 \uc591\uacf5\uc774 \uba87\uac1c \uc0dd\uae30\uc9c0 \uc54a\ub294 \uc0c1\ud669\uc5d0\uc11c\ub294 \uc804\uc790\uc640 \uc591\uacf5\uc774 \uc591 \uadf9\ub2e8\uc73c\ub85c \ub05d\uae4c\uc9c0 \ub2ec\ub824\uac00\uc9c0 \ubabb\ud558\uace0 \ub2e4\uc2dc \ub418\ub3cc\uc544\uc640\uc11c \uc7ac\uacb0\ud569\ub418\uc5b4 \ubc84\ub9b0\ub2e4. \uc6b0\ub9ac\uac00 \uc6d0\ud558\ub294 APD\uc758 \uc791\ub3d9\uc740 \ub2e8 1\uac1c\uc758 \uc804\uc790-\uc591\uacf5 \uc30d\uc774\ub77c \ud558\ub354\ub77c\ub3c4 \ub05d\uae4c\uc9c0 \uac00\uc11c \uc804\ub958\ub85c \ud758\ub7ec\uc918\uc57c \ud558\ub294 \uac83\uc774\ub2e4. \uadf8\ub807\uac8c \ub418\ub824\uba74 \ub354 \uac15\ud55c \uc5ed\uc804\uc555\uc774 \uac78\ub824 \uc788\uc5b4\uc57c \ud55c\ub2e4. \ud558\uc9c0\ub9cc, \uc774 \uacbd\uc6b0 \ub610\ub2e4\ub978 \ubd80\uc791\uc6a9\uc774 \ub098\ud0c0\ub098\ub294\ub370, \uadf8\uac83\uc774 \ubc14\ub85c \uc774 \ub2e4\uc774\uc624\ub4dc\uc5d0 \ubd99\uc740 \uc774\ub984\uc5d0 \ud3ec\ud568\ub41c avalanche\ub77c\ub294 \ud604\uc0c1\uc774\ub2e4.<\/p>\n
\ub208\uc0ac\ud0dc\ub294 \uc544\uc8fc \uc791\uc740 \ub208\ub369\uc5b4\ub9ac\uac00 \ud1a1 \ub5a8\uc5b4\uc9c0\uba74\uc11c \uc0b0 \uc804\uccb4\ub97c \ub4a4\ud754\ub4dc\ub294 \uc5c4\uccad\ub09c \ub208\uc758 \ud750\ub984\uc73c\ub85c \uc804\uac1c\ub418\ub294 \uacfc\uc815\uc774\ub2e4. \uc5f0\uc1c4\uc791\uc6a9(Chain-reaction)\uc774\ub77c\uace0 \ubd88\ub7ec\ub3c4 \ub420 \uac83\uc774\ub2e4. \ud558\ub098\uc758 \uc804\uc790\uac00 \uc5ed\uc804\uc555\uc5d0 \uc758\ud574 \ub2ec\ub824\uac00\uba74\uc11c \uc5d0\ub108\uc9c0\ub97c \uc5bb\uac8c \ub418\uace0, \uadf8 \uc5d0\ub108\uc9c0\ub97c \uac16\uace0 \ub2e4\ub978 \uc804\uc790\uc640 \ucda9\ub3cc\ud55c\ub2e4\uba74 \uc804\uc790\uc758 \uc218\uac00 2\ubc30\ub85c \ub298\uc5b4\ub09c\ub2e4. \uadf8\ub807\uac8c \ub298\uc5b4\ub09c \uc804\uc790\ub4e4\uc740 \ub610 \ub2ec\ub824\uac00\uba74\uc11c \uc5d0\ub108\uc9c0\ub97c \uc5bb\uac8c \ub418\uace0, \uc774 \uacfc\uc815\uc744 \ubc18\ubcf5\ud574\uc11c \uc804\ub958\uc5d0 \ucc38\uc5ec\ud558\ub294 \uc804\uc790\uc758 \uc218\uac00 \uae30\ud558\uae09\uc218\uc801\uc73c\ub85c \ub298\uc5b4\ub098\uac8c \ub41c\ub2e4. \uadf8 \uacb0\uacfc \uc6b0\ub9ac\ub294 \ud070 \uc804\ub958\ub97c \uc5bb\uac8c \ub418\ub294\ub370, \uc774 \ub54c \ub300\ub7b5 100\ubc30 \uc815\ub3c4\ub85c \uc804\uc790\uac00 \ub298\uc5b4\ub098\uac8c \ub41c\ub2e4. \ub530\ub77c\uc11c \uc804\uc790 1\uac1c\uc5d0 \ub300\uc751\ud558\ub294 \uad11\uc790 1\uac1c\ub77c \ud558\ub354\ub77c\ub3c4 \uc6b0\ub9ac\uac00 \uce21\uc815\ud560 \uc218 \uc788\uac8c \ub418\ub294 \uac83\uc774\ub2e4.<\/p>\n
\uc774 \uc0c1\ud669\uc740 \uad11\uc790 1\uac1c\ub77c\ub3c4 \uac80\ucd9c\ud560 \uc218 \uc788\ub2e4\ub294 \uc7a5\uc810\uc774 \uc788\uc9c0\ub9cc, \uc138\uac00\uc9c0 \ubb38\uc81c\ub97c \ubc1c\uc0dd\uc2dc\ud0a8\ub2e4. \ud558\ub098\ub294 \uc5f4\uc5d0 \uc758\ud574\uc11c \uc804\uc790-\uc591\uacf5 \uc30d\uc774 \uc0dd\uc131\ub418\ub294 \ud604\uc0c1\uc774 \uc788\uc744 \uc218 \uc788\ub294\ub370, \uadf8\ub7fc \uc6b0\ub9ac\uac00 \uc6d0\ud558\uc9c0 \uc54a\ub294 \uc2e0\ud638\uac00 \uc0dd\uc131\ub418\ubbc0\ub85c \uc2e0\ud638\uc5d0 \uc7a1\uc74c\uc774 \ub07c\uac8c \ub41c\ub2e4. \ubb3c\ub860 \uc774 \ud604\uc0c1\uc740 \uc5ed\uc804\uc555\uc744 \uc904\uc774\uba74 \ud574\uacb0\ub418\ub294 \ubb38\uc81c\uc9c0\ub9cc \uadf8\ub807\uac8c \ub418\uba74 APD\ub85c \uc368\uba39\uc9c0 \ubabb\ud558\uac8c \ub418\ubbc0\ub85c \uc758\ubbf8\uac00 \uc5c6\ub2e4. \uc628\ub3c4\ub97c \ub0ae\ucdb0\uc11c \ud574\uacb0\ud574\uc57c\ub9cc \ud55c\ub2e4.<\/p>\n
\ub450\ubc88\uc9f8 \ubb38\uc81c\ub294 \uad11\uc790 1\uac1c\uac00 \ub4e4\uc5b4\uc628 \uac83\uacfc \uc5ec\ub7ec\uac1c\uac00 \ub4e4\uc5b4\uc628 \uac83\uc774 \uad6c\ubd84\uc774 \uc548\ub41c\ub2e4\ub294 \uc810\uc774\ub2e4. \uad11\uc790 \uc5ec\ub7ec\uac1c\uac00 \ub4e4\uc5b4\uc654\uc744 \ub54c\uc5d0\ub3c4 \uc804\uc790-\uc591\uacf5 \uc30d\uc774 \uc0dd\uae30\ub294\ub370, \ucd08\ubc18\uc5d0 \uba87\uac1c\uc758 \uc30d\uc774 \uc788\ub4e0\uc9c0 \uc0c1\uad00 \uc5c6\uc774 \ucd5c\uc885\uc801\uc73c\ub85c \ub098\ud0c0\ub098\ub294 \uc804\ub958\uc758 \uc138\uae30\ub294 \ube44\uc2b7\ud558\uae30 \ub54c\ubb38\uc5d0 \uc0ac\uc2e4 Single photon detector\ub294 few photon detector\ub77c\uace0 \ud574\uc57c \uc880 \ub354 \uacfc\ud559\uc801\uc73c\ub85c \uc62c\ubc14\ub978 \ud45c\ud604\uc774 \ub41c\ub2e4.<\/p>\n
\uc138\ubc88\uc9f8 \ubb38\uc81c\ub294 \ube5b\uc774 \ub4e4\uc5b4\uc624\uc9c0 \uc54a\uac8c \ub41c \uc774\ud6c4\uc5d0 \uc804\uc790-\uc591\uacf5\uc774 \ubaa8\ub450 \ud758\ub7ec\uc11c \uc804\ub958\uac00 \ub354\uc774\uc0c1 \ud750\ub974\uc9c0 \uc54a\uac8c \ub420 \ub54c\uae4c\uc9c0 \uc2dc\uac04\uc774 \uac78\ub9b0\ub2e4\ub294 \uc810\uc774\ub2e4. \uc774 \uc2dc\uac04 \ub3d9\uc548 \ub9cc\uc57d \uad11\uc790\uac00 \ub2e4\uc2dc \ub4e4\uc5b4\uc628\ub2e4\uba74 \ub450\ubc88\uc9f8 \ubb38\uc81c\uc5d0\uc11c \uc9c0\uc801\ud55c \uac83\uacfc \ub9c8\ucc2c\uac00\uc9c0\ub85c \uad11\uc790\uac00 1\uac1c\uc778\uc9c0 \uc5ec\ub7ec\uac1c\uc778\uc9c0 \uad6c\ubd84\ud560 \uc218 \uc5c6\uac8c \ub418\ubbc0\ub85c, \uc77c\ub2e8 \uc2e0\ud638\ub97c \uc5bb\uc5c8\ub2e4\uba74 \uc5ed\uc804\uc555\uc744 \uaebc\uc11c \ub354\uc774\uc0c1 \uc804\ub958\uac00 \ud750\ub974\uc9c0 \uc54a\uc744 \ub54c \uae4c\uc9c0 \uae30\ub2e4\ub838\ub2e4\uac00 \ub2e4\uc2dc \uc2e4\ud5d8\uc744 \uc2dc\uc791\ud574\uc57c \ud55c\ub2e4. \uc774 \uc2dc\uac04\uc744 \uc8fd\uc740 \uc2dc\uac04(Dead time)\uc774\ub77c\uace0 \ubd80\ub978\ub2e4.<\/p>\n
\uc5ec\uae30\uc5d0, \uc6cc\ub099 \ubbfc\uac10\ud558\uae30 \ub54c\ubb38\uc5d0 \ub098\ud0c0\ub098\ub294 Afterpulse\ub77c\ub294 \ud604\uc0c1\ub3c4 \uc788\ub2e4. \uc774\uac83\uc740 \uc55e\uc5d0\uc11c \uc804\uc790-\uc591\uacf5 \uc30d\uc774 \uc0dd\uc131\ub41c \ud6c4, \ub2e4 \ud758\ub7ec\uac00\uc9c0 \ubabb\ud558\uace0 \ubc18\ub3c4\uccb4 \ub0b4\ubd80\uc5d0 \ub0a8\uc544\uc788\ub2e4\uac00 \ub2e4\uc2dc \uc5ed\uc804\uc555\uc774 \uac78\ub838\uc744 \ub54c, \uadf8 \ub54c \uac00\uc11c\uc57c \ud750\ub974\uae30 \uc2dc\uc791\ud574\uc11c \uc0dd\uae30\ub294 \ud604\uc0c1\uc774\ub2e4. \uc774\uac83\uc740 \ucc98\uc74c\uc5d0 \ub098\ud0c0\ub09c \ud070 \ud384\uc2a4 \uc9c1\ud6c4\uc5d0 \uc791\uac8c \ub728\ub294 \uc2e0\ud638\ub85c \ub098\ud0c0\ub09c\ub2e4.<\/p>\n
\uc774\uc81c APD\uc758 \uc791\ub3d9 \uc6d0\ub9ac\ub97c \uc54c\uc544\ubd24\uc73c\ub2c8, \ub2e4\uc74c \uae00\uc5d0\uc11c\ub294 \uc2a4\ud399\uc744 \ubcf4\uace0 \uc5b4\ub5bb\uac8c \uace8\ub77c\uc57c \ud558\ub294\uc9c0\ub97c \uc0b4\ud3b4\ubcf4\ub3c4\ub85d \ud558\uaca0\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
Avalanche photodiode\ub294 \uad11\ud559 \uc5f0\uad6c\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \uc911\uc694\ud55c \uc804\uc790\ubd80\ud488\uc911\uc758 \ud558\ub098\uc774\ub2e4. \ub300\ud45c\uc801\uc778 \uc5c5\uccb4\uc758 \ub9c1\ud06c\ub97c \uac78\uc5b4\ub450\uc5c8\uc73c\ub2c8 \uc0ac\uace0 \uc2f6\uc73c\uba74 \uc544\ub798 \ud648\ud398\uc774\uc9c0\uc5d0\uc11c \uc54c\uc544\ubcf4\uace0 \uc8fc\ubb38\ud558\uba74 \ub41c\ub2e4. http:\/\/www.hamamatsu.com\/jp\/en\/4003.html https:\/\/www.edmundoptics.com\/testing-detection\/detectors\/avalanche-photodiodes\/ \uc904\uc5ec\uc11c APD\ub77c\uace0 \ud558\ub294\ub370, \uad11\uc790 1\uac1c\ub97c \uce21\uc815\ud560 \uc218 \uc788\ub294 \uc7a5\uce58\uc911\uc758 \ud558\ub098\ub2e4. \uad11\uc790 1\uac1c\ub97c \uce21\uc815\ud560 \uc218 \uc788\ub294 \uc7a5\uce58\ub97c \ub2e8\uad11\uc790 \uac80\ucd9c\uae30(Single photon detector, SPD)\ub77c\uace0 \ubd80\ub974\ub294\ub370, \uadf8\uc911 \ud2b9\ubcc4\ud788 APD\ub97c \uac16\uace0\uc11c Single photon avalanche detector(SPAD)\ub77c\uace0 \ubd80\ub974\uae30\ub3c4 \ud55c\ub2e4. SPD\uc5d0\ub294 APD\ub9cc […]<\/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":[8,4],"tags":[],"class_list":["post-11003","post","type-post","status-publish","format-standard","hentry","category-8","category-diary"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2Rt","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/11003","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=11003"}],"version-history":[{"count":5,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/11003\/revisions"}],"predecessor-version":[{"id":11008,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/11003\/revisions\/11008"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11003"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}