| Title: |
Phase-contrast imaging of a dense atomic cloud |
| Authors: |
Frometa, M.; Dias, P.; Magnani, P.; Martins, M. Do Amaral; Hugbart, Mathilde; Cipris, A.; Courteille, Ph.; Teixeira, R. Celistrino |
| Contributors: |
Instituto de Física de São Carlos Universidade de São Paulo (IFSC-USP); Universidade de São Paulo = University of São Paulo (USP); European Laboratory for Non-Linear Spectroscopy (LENS); Università degli Studi di Firenze = University of Florence = Université de Florence (UniFI); Federal University of São Carlos = Universidade Federal de São Carlos (UFSCar); Institut de Physique de Nice (INPHYNI); Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA); ANR-19-CE47-0014,QuaCor,Cold atoms, photons, and quantum correlations(2019); ANR-15-IDEX-0001,UCA JEDI,Idex UCA JEDI(2015); ANR-19-QUAN-0003,PACE-IN,Photons et Atomes: effets coopératifs aux interfaces(2019) |
| Source: |
ISSN: 0034-6748. |
| Publisher Information: |
CCSD; American Institute of Physics |
| Publication Year: |
2025 |
| Collection: |
HAL Université Côte d'Azur |
| Subject Terms: |
32.70.Jz; 42.25.Bs; 42.50.Gy; 42.50.Ct; [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph] |
| Description: |
International audience ; We demonstrate that phase-contrast imaging (PCI) can reliably reconstruct the in situ density profile even for highly spatially and optically dense samples. In our experiment, we achieve high spatial densities of up to 7.9 × 1013 atoms/cm3 and optical depths up to 64 in a dense cold atomic cloud of 88Sr atoms. The use of a spatial light modulator instead of a fixed phase plate in the PCI setup provides enhanced flexibility and control of imaging parameters, making this imaging technique robust against imaging artifacts and adaptable to varying experimental conditions. Moreover, we quantify the conditions under which the standard single-atom polarizability model remains accurate for PCI in a density regime where collective effects should modify the atomic response of the system. We experimentally validate our statements by showing excellent agreement with time-of-flight measurements even at the highest densities. Our results establish PCI as a reliable and versatile method for characterizing spatially dense atomic clouds. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/arxiv/2501.03158; info:eu-repo/semantics/altIdentifier/pmid/40862666; ARXIV: 2501.03158; PUBMED: 40862666 |
| DOI: |
10.1063/5.0256884 |
| Availability: |
https://hal.science/hal-05227718; https://hal.science/hal-05227718v1/document; https://hal.science/hal-05227718v1/file/Phase_contrast_imaging.pdf; https://doi.org/10.1063/5.0256884 |
| Rights: |
https://creativecommons.org/licenses/by-nc-sa/4.0/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.6495679E |
| Database: |
BASE |