ʻAno o ka mea ʻike kiʻi PIN

ʻAno oMea ʻike kiʻi PIN

Mea ʻike kiʻi, kahi mea hana e hoʻololi i nā hōʻailona māmā i nā hōʻailona uila me ka hoʻohana ʻana i ka hopena photoelectric, ua like ia me ka maka kanaka a hiki ke hopu i nā hōʻailona nāwaliwali i ʻike ʻia a ʻike ʻole ʻia. Ma muli o kāna kumu hana o ka hoʻomālamalama ʻana o ka mālamalama e hoʻololi ana i nā waiwai kino o ka mea, loaʻa i nā photodetectors kahi ākea o nā koho mea a me nā ʻano like ʻole, kēlā me kēia me kāna mau hiʻohiʻona noi kūikawā.
Hoʻokaʻawale ʻia nā ʻano o nā photodetectors ma muli o ko lākou ʻano kūkulu, me nā hāmeʻa optoelectronic vacuum, nā mea ʻike photoconductive,Nā kiʻi paʻi PIN, nā phototransistors, a me nā mea ʻike diode avalanche (Mea ʻike kiʻi APD). ʻO ka mea kūikawā ka PIN photodetector, kahi e hoʻonui ai i ka laulā o ka ʻāpana depletion ma ka hoʻokomo ʻana i kahi papa semiconductor ʻano I haʻahaʻa haʻahaʻa i loko o ka PN junction, no laila e hōʻemi ana i ka mana o ka neʻe diffusion a hoʻomaikaʻi i ka wikiwiki o ka pane.
Ua hoʻohana nui ʻia nā PIN photodiodes ma nā ʻano like ʻole e like me ke kamaʻilio optical, ke ana ʻana o ka optical, ke kiʻi ʻana i nā kiʻi lapaʻau, a me ka laser ranging ma muli o ko lākou kiʻekiʻe o ka pono quantum, ka walaʻau haʻahaʻa, ka pane spectral ākea, a me ka pane wikiwiki. No ka laʻana, pili nā mea ʻike hoʻonui silicon a me nā photodetectors kaulike a LBTEK i kēia māhele. Eia nō naʻe, he mea kūpono ke hoʻomaopopo ʻana ua kaupalena ʻia nā photodetectors PIN i ko lākou hiki ke ʻike i nā hōʻailona mālamalama nāwaliwali ma muli o ka nele o ka loaʻa hou. Hoʻonui ka photodiode avalanche (APD photodetector) i ka photocurrent ma ka hoʻolauna ʻana i kahi ʻāpana loaʻa o kēia manawa i loko o ka photodiode PIN a me ka hoʻohana ʻana i kāna hopena hoʻonui avalanche kūloko. Hāʻawi kēia i nā photodetectors APD i kahi pono ma luna o nā photodetectors PIN i ka ʻike ʻana i nā hōʻailona nāwaliwali, me ka loaʻa kūloko a hiki i ka 10 a 100 mau manawa. ʻOkoʻa ke kumu hana o kahi photodetector ma muli o kona ʻano kikoʻī, akā pili kona kumu hopena photoelectric kumu i nā ʻano photodetectors like ʻole.
Ma ke ʻano he ʻāpana koʻikoʻi o nā ʻōnaehana optoelectronic hou, ʻo ka hana o nā photodetectors e hoʻoholo pololei i ka pololei, ka hilinaʻi, a me ke kūpaʻa o ka ʻōnaehana holoʻokoʻa. Hoʻohana nui ʻia ia ma nā kahua e like me ke kamaʻilio fiber optic, ka nānā ʻana i ke kaiapuni, ke kiʻi ʻana i nā lāʻau lapaʻau, ka ʻimi koa, ka automation ʻoihana, a me ka noiʻi ʻepekema, kuleana no ka hoʻololi ʻana i nā hōʻailona optical i nā hōʻailona uila hiki ke ana ʻia. No laila, he mea nui ka ʻike piha a pololei o nā photodetectors.