LCP-28 Abbe Imaging and Spatial Filtering Experiment

Lus piav qhia luv luv:

Lub hauv paus ntsiab lus ntawm Abbe imaging ntseeg hais tias cov txheej txheem kev yees duab ntawm lub lens tuaj yeem muab faib ua ob kauj ruam: thawj kauj ruam yog tsim lub spatial spectrum ntawm lub rear focal dav hlau (spectrum dav hlau) ntawm lub lens los ntawm lub teeb diffracted los ntawm cov khoom, uas yog "frequency division" nyhuv tshwm sim los ntawm diffraction; Cov kauj ruam thib ob yog kom coherently superimpose cov kab teeb ntawm ntau qhov sib txawv ntawm cov duab dav hlau los tsim cov duab ntawm cov khoom, uas yog "synthesis" cuam tshuam los ntawm kev cuam tshuam. Ob kauj ruam ntawm cov txheej txheem imaging yog qhov tseem ceeb ob Fourier transforms. Yog tias ob qhov Fourier transforms yog qhov zoo tagnrho, uas yog, tsis muaj cov ntaub ntawv poob, ces cov duab thiab cov khoom yuav tsum zoo sib xws. Yog hais tias muaj ntau yam spatial lim tau teem rau ntawm qhov chaw spectrum los thaiv qee qhov spatial zaus ntawm cov spectrum, cov duab yuav hloov. spatial filtering yog tso ntau yam spatial lim rau ntawm qhov chaw spectrum ntawm qhov kho qhov muag, tshem tawm (los yog xaiv kom dhau) qee qhov spatial frequencies lossis hloov lawv qhov amplitude thiab theem, kom cov duab ob sab tuaj yeem txhim kho raws li qhov xav tau. Qhov no kuj yog qhov tseem ceeb ntawm coherent optical processing.