Phase of white light and its compatibility to the optical path

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU141642" target="_blank" >RIV/00216305:26620/21:PU141642 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/21:73606973

Výsledek na webu

<a href="https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-8-12398&id=449962" target="_blank" >https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-8-12398&id=449962</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OE.418878" target="_blank" >10.1364/OE.418878</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phase of white light and its compatibility to the optical path

Popis výsledku v původním jazyce

The phase of monochromatic light directly relates to the optical path difference (OPD), but finding this connection for spectrally broadband light is challenging. Due to a missing concept of the compatibility between the phase of randomly fluctuating fields and the OPD, demanding scanning is the only proven way for a highly accurate OPD measurement in white light. Here, we use the self-coherence function (SCF) of the spatially incoherent light to reveal the connection between the white-light phase and the OPD. Our method uses an associated field assigned to the SCF to mimic the intensity oscillation of a correlation pattern. The associated field allows restoring a cumulative OPD integrated into the SCF across all spectral constituents. The method is essential for quantitative phase microscopy, in which the SCF is available even in white light, but its processing beyond the quasi-monochromatic approach is still lacking. Improper assessment of the white-light phase may result in a loss of measurement accuracy, as we demonstrate theoretically and experimentally. Deploying our method in coherence-controlled holographic microscopy, we measured the cumulative OPD in the broadband light with a strongly asymmetric spectrum (bandwidth of 150 nm), achieving accuracy better than 5 nm in the measuring depth range of 2 mu m. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Název v anglickém jazyce

Phase of white light and its compatibility to the optical path

Popis výsledku anglicky

The phase of monochromatic light directly relates to the optical path difference (OPD), but finding this connection for spectrally broadband light is challenging. Due to a missing concept of the compatibility between the phase of randomly fluctuating fields and the OPD, demanding scanning is the only proven way for a highly accurate OPD measurement in white light. Here, we use the self-coherence function (SCF) of the spatially incoherent light to reveal the connection between the white-light phase and the OPD. Our method uses an associated field assigned to the SCF to mimic the intensity oscillation of a correlation pattern. The associated field allows restoring a cumulative OPD integrated into the SCF across all spectral constituents. The method is essential for quantitative phase microscopy, in which the SCF is available even in white light, but its processing beyond the quasi-monochromatic approach is still lacking. Improper assessment of the white-light phase may result in a loss of measurement accuracy, as we demonstrate theoretically and experimentally. Deploying our method in coherence-controlled holographic microscopy, we measured the cumulative OPD in the broadband light with a strongly asymmetric spectrum (bandwidth of 150 nm), achieving accuracy better than 5 nm in the measuring depth range of 2 mu m. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/GA21-01953S" target="_blank" >GA21-01953S: Geometricko-fázové hologramy vytvořené pomocí metapovrchů: kvantifikace optické odezvy a užití pro fázová měření a zobrazení se superrozlišením</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

OPTICS EXPRESS

ISSN

1094-4087

e-ISSN

—

Svazek periodika

29

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

12398-12412

Kód UT WoS článku

000640033600084

EID výsledku v databázi Scopus

2-s2.0-85104425006