Self-wavefront interference using transverse splitting holography

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dc.contributor.authorBleahu, Andrei-ioan
dc.contributor.authorGopinath, Shivasubramanian
dc.contributor.authorKahro, Tauno
dc.contributor.authorHock Ng, Soon
dc.contributor.authorKukli, Kaupo
dc.contributor.authorTamm, Aile
dc.contributor.authorJuodkazis, Saulius
dc.contributor.authorRosen, Joseph
dc.contributor.authorAnand, Vijayakumar
dc.date.accessioned2024-03-28T08:22:25Z
dc.date.available2024-03-28T08:22:25Z
dc.date.issued2023
dc.description.abstractManufacturing diffractive lenses with a high Numerical Aperture (NA) is a challenging task due to limitations in lithography methods and the inverse relation between the width and the radius of the zones. With low-resolution lithography techniques such as photolithography, the zone width reaches the lithography limit within a short radius, resulting in low-NA diffractive lenses. With high-resolution electron beam lithography, it is possible to manufacture high-NA diffractive lenses by prolonged writing. However, in this case, the width of the outermost zones becomes subwavelength, inducing undesirable polarization effects. In this proof-of-concept study, a holography solution has been demonstrated to enhance the imaging resolution of low-NA diffractive lenses. The light from an object is partly modulated by the low-NA diffractive lens and interfered with the remaining unmodulated light outside the area of the diffractive lens. This self-interference hologram of the object is processed in the computer with the point spread hologram to reconstruct the object with a resolution corresponding to the NA of the image sensor. This new imaging technique is called Self-Wavefront Interference using Transverse Splitting Holography (SWITSH). A resolution enhancement of ∼10 times has been demonstrated using a low-NA diffractive lens and SWITSH compared to direct imaging with the same low-NA diffractive lens.
dc.identifier.urihttps://doi.org/10.1016/j.rinp.2023.106839
dc.identifier.urihttps://hdl.handle.net/10062/97412
dc.language.isoen
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/857627///CIPHR
dc.relation.ispartofResults in Physics; Volume 52
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectSuper resolution
dc.subjectSelf-interference
dc.subjectHolography
dc.subjectLucy-Richardson-Rosen algorithm
dc.subjectPhotolithography
dc.subjectDiffractive lens
dc.titleSelf-wavefront interference using transverse splitting holography
dc.typeinfo:eu-repo/semantics/articleen

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