Vis enkel innførsel

dc.contributor.advisorAgarwal, Krishna
dc.contributor.advisorHansen, Daniel Henry
dc.contributor.advisorLiu, Zicheng
dc.contributor.authorSommernes, Jon-Richard
dc.description.abstractThe focus of this thesis is to investigate the feasibility of a lens-less label-free microscope system, and compare this with a conventional lens-based microscope. The imaging performance of conventional microscopes are greatly dependent on the objective lens, due to their inherent physical space constraint and spherical aberrations. We, therefore, will investigate the conceptual feasibility of a lens-less label-free microscope, by analyzing the electromagnetic scattering directly. Here, a lens-less design is considered. Imaging is achieved through the reconstruction of refractive index of specimens using full-electric-field analysis. The imaging performances are compared with results from lens-based microscopes. We will also briefly discuss intensity-only reconstruction, and discuss the benefits and weaknesses of such a technique. While lens-based systems are limited by physical space limitations, the limitations of the lens-less system is similar and harder to overcome. Additionally, the lens-based system shows a non-linear proportionality with wavelengths, that the lens-less system is incapable of. The difference in setup and reconstruction results makes a preferred method dependent on the use case. The possibility of intensity-only imaging is considered. The methods explored are phase reconstruction and a modified MUSIC algorithm.en_US
dc.publisherUiT Norges arktiske universitetno
dc.publisherUiT The Arctic University of Norwayen
dc.rights.holderCopyright 2021 The Author(s)
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430::Electromagnetism, acoustics, optics: 434en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Elektromagnetisme, akustikk, optikk: 434en_US
dc.titleA comparative study of lens-less and lens-based optical imaging using full electric field analysisen_US
dc.typeMaster thesiseng

Tilhørende fil(er)


Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)