LCP-28 Abbe Imaging thiab Spatial Filtering Experiment

Kev Piav Qhia Luv:

Lub hauv paus ntsiab lus ntawm Abbe imaging ntseeg tias cov txheej txheem imaging ntawm lub lens tuaj yeem faib ua ob kauj ruam: thawj kauj ruam yog los tsim ib qho spatial spectrum ntawm lub dav hlau focal tom qab (spectrum dav hlau) ntawm lub lens los ntawm lub teeb diffracted los ntawm cov khoom, uas yog "zaus faib" nyhuv los ntawm diffraction; Kauj ruam thib ob yog los sib sau ua ke cov beams ntawm ntau qhov chaw zaus ntawm lub dav hlau duab los tsim ib daim duab ntawm cov khoom, uas yog "synthesis" nyhuv los ntawm kev cuam tshuam. Ob kauj ruam ntawm cov txheej txheem imaging yog qhov tseem ceeb ob Fourier transforms. Yog tias ob qho Fourier transforms no zoo tagnrho, uas yog, tsis muaj kev poob ntawm cov ntaub ntawv, ces daim duab thiab cov khoom yuav tsum zoo sib xws. Yog tias ntau yam spatial lim dej tau teeb tsa ntawm qhov chaw spectrum los thaiv qee qhov spatial zaus Cheebtsam ntawm spectrum, daim duab yuav hloov pauv. Spatial filtering yog los tso ntau yam spatial lim dej rau ntawm qhov chaw spectrum ntawm lub cev optical, tshem tawm (lossis xaiv dhau) qee qhov spatial frequencies lossis hloov lawv qhov amplitude thiab theem, yog li ntawd ob-seem khoom duab tuaj yeem txhim kho raws li qhov xav tau. Qhov no kuj yog lub ntsiab lus ntawm kev ua haujlwm optical coherent.