GR Morrison, F Zhang, A Gianoncelli, IK Robinson，“X-ray ptychography using randomized zone plates”，Optics Express 26 (12), 14915-14927（2018）

【原文】

X-ray ptychography using randomized zone plates

ABSTRACT

We have developed a randomized grating condenser zone plate (GCZP) that provides a µm-scale probe for use in x-ray ptychography. This delivers a significantly better x-ray throughput than probes defined by pinhole apertures, while providing a clearly-defined level of phase diversity to the illumination on the sample, and helping to reduce the dynamic range of the detected signal by spreading the zero-order light over an extended area of the detector. The first use of this novel x-ray optical element has been demonstrated successfully for both amplitude and phase contrast imaging using soft x-rays on the TwinMic beamline at the Elettra synchrotron.