Abstract
We demonstrate a method for efficient lensless imaging using ultra-broadband light sources. By using a pair of time-delayed, coherent pulses in a Fourier-transform scheme, spectrally resolved diffraction patterns are obtained throughout the entire spectrum of the incident light source. We perform a proof-of-principle experiment using an octave-spanning visible light source, and obtain images of a holographic test sample with near-diffraction limited resolution. Our approach provides a promising route towards efficient high-resolution imaging using table-top high-harmonic soft-X-ray sources.
Highlights
High-resolution coherent lensless imagingHigh-resolution imaging is an essential tool for studying nature at the smallest possible scale
Various types of novel X-ray sources are being developed around the world, ranging from km-size X-ray free electron lasers (XFELs) to compact table-top high-harmonic sources
Table-top high-harmonic generation (HHG) sources seem ideally suited for the development of soft-X-ray microscopes [4], as they are compact in size, highly coherent, and costeffective compared to XFELs
Summary
High-resolution coherent lensless imagingHigh-resolution imaging is an essential tool for studying nature at the smallest possible scale. By using a pair of time-delayed, coherent pulses in a Fouriertransform scheme, spectrally resolved diffraction patterns are obtained throughout the entire spectrum of the incident light source. We perform a proof-of-principle experiment using an octave-spanning visible light source, and obtain images of a holographic test sample with near-diffraction limited resolution.
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