Experimental aspects of multiharmonic-order coherent diffractive imaging. Diffractive imaging using a polychromatic high-harmonic generation soft-x-ray source.

Lensless imaging using broadband X-ray sources. A practical algorithm for the determination of phase from image and diffraction plane pictures. A computational framework for ptychographic reconstructions. Ptychography with broad-bandwidth radiation. Information multiplexing in ptychography. Octave-spanning hyperspectral coherent diffractive imaging in the extreme ultraviolet range. Lensless diffractive imaging with ultra-broadband table-top sources: from infrared to extreme-ultraviolet wavelengths. PhD thesis, Université Paris-Saclay (2016). Single Shot Lensless Imaging with Coherence and Wavefront Characterization of Harmonic and FEL sources. Fourier transform holography with high harmonic spectra for attosecond imaging applications. Phase retrieval for undersampled broadband images. Beyond crystallography: diffractive imaging using coherent x-ray light sources. Three-dimensional reconstruction of the giant mimivirus particle with an x-ray free-electron laser.

Three-dimensional visualization of a human chromosome using coherent X-ray diffraction. Nishino, Y., Takahashi, Y., Imamoto, N., Ishikawa, T. High-resolution ab initio three-dimensional x-ray diffraction microscopy. Extending the methodology of X-ray crystallography to allow imaging of micrometre-sized non-crystalline specimens. Femtosecond and nanometre visualization of structural dynamics in superheated nanoparticles. Attosecond time–energy structure of X-ray free-electron laser pulses. Generation of attosecond x-ray pulses with a multicycle two-color enhanced self-amplified spontaneous emission scheme. Bright coherent ultrahigh harmonics in the keV X-ray regime from mid-infrared femtosecond lasers. Single-shot diffractive imaging with a table-top femtosecond soft X-ray laser-harmonics source. Femtosecond diffractive imaging with a soft-X-ray free-electron laser. In Conference on Lasers and Electro-Optics Paper QTh5B.10 (OSA, 2012).Ĭhapman, H. Generation of an isolated attosecond pulse with microjoule-level energy. Challenges and opportunities in attosecond and XFEL science. Attosecond science: recent highlights and future trends. Because of its generality and ease of implementation we expect this method to find widespread applications such as in petahertz electronics or attosecond nanomagnetism. Experimental validations using visible and hard X-ray radiation show the applicability of the method. The method is based on a numerical monochromatization of the broadband diffraction pattern by the regularized inversion of a matrix that depends only on the spectrum of the diffracted radiation. Here, we present an approach that enables coherent diffractive imaging using broadband illumination. Regular coherent diffractive imaging, based on the diffraction of quasi-monochromatic illumination by a sample, is inherently incompatible with the extremely broad nature of attosecond spectra. However, the necessary imaging methods combining attosecond temporal resolution with nanometre spatial resolution are currently lacking. Recent technological advances in attosecond science hold the promise of tracking electronic processes at the shortest space and time scales.

Coherent x ray