TY - JOUR
KW - Image quality
KW - Partial coherence
KW - Phase matching
KW - Shot noise
KW - Spatial resolution
KW - Wave front sensing
AU - Benjamin Shearer
AU - Henry Kapteyn
AU - Iona Binnie
AU - Nicholas Jenkins
AU - Margaret Murnane
AB - We demonstrate PaCMAN, a ptychography algorithm that can reconstruct high quality images with broadband illumination sources while being robust to shot, detector, and parasitic noise. We extend prior monochromatization work to improve accuracy, especially for discrete spectra, and also demonstrate how PaCMAN can be converted into Ms. PaCMAN, a multi-spectral variant that outperforms multi-spectral ePIE. When comparing speed-optimized ePIE and PaCMAN, we achieve high reconstruction quality in 4x less time, and when they are dose-optimized, we achieve high reconstruction quality in 1.5-2x less dose. These algorithms will enable rapid sub-10 nm imaging with table-top soft X-ray high harmonic supercontinua, advance attosecond coherent diffractive imaging, and reduce the dose needed to image radiation sensitive materials.
BT - Opt. Express
DA - 2025-01
DO - 10.1364/OE.541675
M1 - 1
N2 - We demonstrate PaCMAN, a ptychography algorithm that can reconstruct high quality images with broadband illumination sources while being robust to shot, detector, and parasitic noise. We extend prior monochromatization work to improve accuracy, especially for discrete spectra, and also demonstrate how PaCMAN can be converted into Ms. PaCMAN, a multi-spectral variant that outperforms multi-spectral ePIE. When comparing speed-optimized ePIE and PaCMAN, we achieve high reconstruction quality in 4x less time, and when they are dose-optimized, we achieve high reconstruction quality in 1.5-2x less dose. These algorithms will enable rapid sub-10 nm imaging with table-top soft X-ray high harmonic supercontinua, advance attosecond coherent diffractive imaging, and reduce the dose needed to image radiation sensitive materials.
PB - Optica Publishing Group
PY - 2025
SP - 717
EP - 735
T2 - Opt. Express
TI - Robust broadband ptychography algorithms for high-harmonic soft X-ray supercontinua
UR - https://opg.optica.org/oe/abstract.cfm?URI=oe-33-1-717
VL - 33
ER -