Transient optical gratings for pulsed ionizing radiation studies

TL;DR

This paper explores the use of transient optical gratings to convert incoherent ionizing radiation into coherent visible light, enabling optical computation for ultrafast X-ray studies.

Contribution

It proposes novel technologies for incoherent to coherent radiation conversion, facilitating phase retrieval and holographic data storage in short-wavelength radiation research.

Findings

Suggested approaches for IICV conversion.

Potential for phase retrieval in X-ray microscopy.

Enabling optical computation with ionizing radiation.

Abstract

Prior to the invention of holography or lasers, Bragg's X-ray microscope opened the door to optical computation in short-wavelength studies using spatially coherent visible light, including phase retrieval methods. This optical approach lost ground to semiconductor detection and digital computing in the 1960s. Since then, visible optics including spatial light modulators (SLMs), array detectors and femtosecond lasers have become widely available, routinely allowing versatile and computer-interfaced imposition of optical phase, molecular coherent control, and detection. Today, high brilliance X-ray sources begin to offer opportunities for atomic resolution and ultrafast pump-probe studies. Correspondingly, this work considers an overlooked aspect of Bragg's X-ray microscope - the incoherent ionizing radiation to coherent visible (IICV) conversion that is a necessary prerequisite for coherent optical computations. Technologies are suggested that can accomplish this conversion. Approaches to holographic data storage of short wavelength scattered radiation data, and phase retrieval that incorporates optical procedures, are motivated.