He aha ke ʻano o ka ʻenehana optical phased array?

Ma ka hoʻomalu ʻana i ka māhele o ka ʻāpana ʻāpana i ka pūnāwai, hiki i ka ʻenehana optical phased array ke ʻike i ke kūkulu hou ʻana a i ʻole ka hoʻoponopono pololei ʻana o ka mokulele isopic array beam. Loaʻa iā ia nā pōmaikaʻi o ka leo liʻiliʻi a me ka nui o ka ʻōnaehana, ka wikiwiki pane wikiwiki a me ka maikaʻi o ka beam maikaʻi.

ʻO ke kumu hana o ka ʻenehana optical phased array ʻo ia ka hoʻololi pono ʻana (a i ʻole ka hoʻopaneʻe) i ka hōʻailona o ka mea kumu i hoʻonohonoho ʻia e like me kekahi kānāwai e loaʻa ai ka deflection o ka lālani array. E like me ka wehewehe ʻana ma luna nei, ʻo ka ʻenehana optical phased array e pili ana i ka ʻenehana deflection beam nui-angle no ka hoʻokuʻu ʻana o ka beam arrays a me ka array telescope interference imaging imaging no ka kiʻi kiʻi kiʻekiʻe o nā pahuhopu mamao.

Mai ka manaʻo o ka hoʻokuʻu ʻana, ʻo ka optical phased array ka mea e hoʻomalu ai i ka māhele o ka array i hoʻouna ʻia, i ʻike ai i ka deflection holoʻokoʻa o ka lālani array a i ʻole ka uku hapa hapa. Hōʻike ʻia ke kumumanaʻo kumu o ka optical phased array ma FIG. 1. FIG. ʻO 1 (a) kahi ʻano synthetic incoherent, ʻo ia hoʻi, aia wale nō ka "array" me ka ʻole "phased array". Hōʻike ka Kiʻi 1 (b) ~ (d) i ʻekolu mau ʻano hana like ʻole o ka laʻana i hoʻonohonoho ʻia (ʻo ia hoʻi, hui pū ʻia).

Lawe wale ka ʻōnaehana synthesis inoherent i ka mana maʻalahi o ka lāʻau lāʻau me ka hoʻomalu ʻole ʻana i ka māhele o ka lālani array. Hiki i kona kumu māmā ke hoʻonui i nā lasers me nā lōʻihi nalu like ʻole, a ʻo ka nui o ke kahua mamao e hoʻoholo ʻia e ka nui o ka hui hoʻouna ʻana, kūʻokoʻa i ka helu o nā mea hoʻonohonoho, ka aperture like o ka array a me ka ratio duty o ka lālani lāʻau, no laila ʻaʻole hiki ke helu ʻia ma ke ʻano he papa hana i ka manaʻo maoli. Eia nō naʻe, ua hoʻohana nui ʻia ka ʻōnaehana synthesis incoherent ma muli o kona ʻano maʻalahi, koi haʻahaʻa i ka hana kumu māmā a me ka mana kiʻekiʻe.

Mai ka manaʻo o ka loaʻa ʻana, hoʻohana ʻia ka optical phased array i ke kiʻi kiʻi kiʻekiʻe o nā pahuhopu mamao (FIG. 2). Hoʻokumu ʻia ʻo ia me ke kelepona telescope, ka papa hoʻoemi manawa, ka hui pū ʻana a me ka mea hana kiʻi. Loaʻa ka paʻakikī paʻakikī o ke kumu pahuhopu. Ua helu ʻia ke kiʻi kiʻi e like me ka Fanssert-Zernick theorem. Kapa ʻia kēia ʻano hana kiʻi interference imaging, ʻo ia kekahi o nā ʻenehana kiʻi aperture synthetic. Mai ka hiʻohiʻona o ka ʻōnaehana hoʻonohonoho, ʻo ke ʻano o ka ʻōnaehana kiʻi interferometric a me ka ʻōnaehana hoʻokuʻu ʻana i ka phased array e like me ke ʻano, akā ʻo ke ala o ka hoʻouna ʻana i ke ala optical i nā noi ʻelua.