Los ntawm kev tswj cov theem ntawm chav tsev beam nyob rau hauv lub beam array, lub optical phased array technology yuav paub txog lub reconstruction los yog meej kev cai ntawm lub array beam isopic dav hlau. Nws muaj qhov zoo ntawm qhov ntim me me thiab qhov loj ntawm lub kaw lus, cov lus teb ceev ceev thiab cov nqaj zoo.
Lub hauv paus ntsiab lus ua haujlwm ntawm optical phased array thev naus laus zis yog kom hloov pauv (lossis ncua) lub teeb liab ntawm lub hauv paus txheej txheem raws li ib txoj cai lij choj kom tau txais lub deflection ntawm lub array beam. Raws li cov ntsiab lus saum toj no, optical phased array thev naus laus zis suav nrog lub kaum sab xis loj ntawm lub kaum sab xis rau cov kab hluav taws xob emission arrays thiab array telescope interference imaging technology rau high-resolution imaging ntawm cov hom phiaj nyob deb.
Los ntawm emission point of view, lub optical phased array yog los tswj cov theem ntawm lub array kis tau tus kab mob, thiaj li kom paub lub zuag qhia tag nrho deflection ntawm lub array beam los yog theem yuam kev them nyiaj. Lub hauv paus ntsiab lus ntawm optical phased array yog qhia hauv FIG. 1. FIG. 1 (a) yog ib qho incoherent hluavtaws array, uas yog, tsuas muaj "array" tsis muaj "phased array". Daim duab 1 (b) ~ (d) qhia peb lub xeev kev ua haujlwm sib txawv ntawm qhov kho qhov muag phased array (uas yog, coherent synthetic array).
Incoherent synthesis system tsuas yog ua kom yooj yim lub zog superposition ntawm array beam yam tsis tau tswj cov theem ntawm array beam. Nws lub teeb ci tuaj yeem ua tau ntau lub lasers nrog qhov sib txawv wavelengths, thiab qhov chaw deb ntawm qhov chaw loj yog txiav txim siab los ntawm qhov loj ntawm qhov chaw xa khoom array, ywj siab ntawm tus naj npawb ntawm cov ntsiab lus array, qhov sib npaug aperture ntawm array thiab lub luag haujlwm piv ntawm beam array, yog li nws tsis tuaj yeem suav tias yog theem array hauv qhov tseeb. Txawm li cas los xij, incoherent synthesis system tau siv dav vim nws cov qauv yooj yim, tsis tshua muaj kev xav tau ntawm lub teeb pom kev zoo thiab lub zog tso zis siab.
Los ntawm qhov kev xav ntawm kev txais, optical phased array yog siv nyob rau hauv cov kev daws teeb meem siab ntawm cov hom phiaj nyob deb (FIG. 2). Nws yog tsim los ntawm telescope array, theem retarder array, beam combinator thiab imaging device. Lub complex coherence ntawm lub hom phiaj qhov chaw yog tau. Lub hom phiaj duab yog xam raws li Fanssert-Zernick theorem. Cov txheej txheem no hu ua interference imaging technique, uas yog ib qho ntawm cov khoom siv hluav taws xob aperture imaging. Los ntawm qhov kev xav ntawm cov qauv, cov qauv ntawm interferometric imaging system thiab phased array emission system yog qhov zoo ib yam, tab sis txoj kev kho qhov muag kis tau tus mob hauv ob daim ntawv thov yog qhov sib txawv.
Post lub sij hawm: May-26-2023