Speaker
Description
Nonlinear imaging has become a powerful and widespread tool for improving the spatial resolution or selectivity of microscopy tools in the visible and infrared spectral range. Only recently has non-linear X-ray science progress to the point where imaging using wavemixing processes can reasonably be contemplated. Here I will discuss how non-linear X-ray imaging can be realized using coherent imaging methods. Instead of separating linear and nonlinear signals using chromatic optics, we instead leverage the mutual incoherence of different frequencies to numerically separate out their contributions to coherent scattering patterns. This approach has several advantages over other conceivable implementations, and I will show how nonlinear X-ray imaging can be realized using existing facility scale and tabletop sources.
Reference: A Sarkar and AS Johnson, arXiv:2512.15457 (2026)