2013/04/15 by Erik B. Malm, Nils C. Monserud, Christopher G. Brown +6
Physics and Astronomy · #Digital Holography and Microscopy #Extreme ultraviolet #Fourier transform #Fresnel zone #Holography #Image resolution #Laser #Laser-Matter Interactions and Applications #Photorefractive and Nonlinear Optics #Resolution (logic) #Spatial frequency #Wavefront #physics.optics #physics.plasm-ph
paper · pdf · doi:10.1364/oe.21.009959
published as Opt. Express 21, 9959-9966 (2013)
openalex publication_date 2013/04/15 · openalex created_date 2016/06/24 · arxiv created 2018/11/12 · arxiv updated 2018/11/21 · openalex updated_date 2026/08/05
We demonstrate single and multi-shot Fourier transform holography with the use of a tabletop extreme ultraviolet laser. The reference wave was produced by a Fresnel zone plate with a central opening that allowed the incident beam to illuminate the sample directly. The high reference wave intensity allows for larger objects to be imaged compared to mask-based lensless Fourier transform holography techniques. We obtain a spatial resolution of 169 nm from a single laser pulse and a resolution of 128 nm from an accumulation of 20 laser pulses for an object ~11x11μm(2) in size. This experiment utilized a tabletop extreme ultraviolet laser that produces a highly coherent ~1.2 ns laser pulse at 46.9 nm wavelength.