Optimised XUV holography using spatially shaped high harmonic beams

A phase-only spatial light modulator is used to generate multiple infrared foci, the positions and intensities of which can be controlled programmably, allowing the generation and control of multiple high harmonic beams. Using two such high harmonic beams Fourier transform holography is performed with separate illumination of the object and reference pinhole, making optimal use of the available photon flux. This technique provides new opportunities for imaging at extreme ultraviolet wavelengths