Lensless Fourier transform electron holography applied to vortex beam analysis
| Autor: | Yoshimasa A. Ono, Ken Harada, Yoshio Takahashi |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Letter
electron holography helical wavefront Phase (waves) Holography Physics::Optics Electron holography law.invention symbols.namesake Optics Structural Biology law lens-less Fourier transform holography Radiology Nuclear Medicine and imaging reciprocal space Instrumentation Physics Plane (geometry) business.industry Bragg's law spherical wavefront Reciprocal lattice Fourier transform Amplitude symbols business vortex beam |
| Zdroj: | Microscopy |
| ISSN: | 2050-5701 |
| Popis: | Lensless Fourier transform holography has been developed. By treating Bragg diffraction waves as object waves and a transmitted spherical wave as a reference wave, these two waves are interfered and recorded as holograms away from the reciprocal plane. In this method, reconstruction of holograms requires only one Fourier transform. Application of this method to analyze vortex beams worked well and their amplitude and phase distributions were obtained on the reciprocal plane. By combining the conventional holography with the developed lensless Fourier transform holography, we can reconstruct and analyze electron waves from the real to reciprocal space continuously. |
| Databáze: | OpenAIRE |
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