"Harnessing quantum light science for nanoscience and nanotechnology" 
 
Seminario de Materia Condensada


Margaret Murnane

 

University of Colorado, Boulder, USA

Martes, 8 de mayo de 2018, 2:00 p.m.
Bloque IP Sala-101
Resumen:
Ever since the invention of the laser over 50 years ago, scientists have been striving to create an X-ray version of the laser. The X-ray sources we currently use in materials science, medicine and security screening are in essence the same X-ray light bulb source that Röntgen used in 1895. In the same way that visible lasers can concentrate light energy far better than a light bulb, a directed beam of X-rays would have many useful applications in science and technology. The problem was that until recently, we needed ridiculously high power levels to make an x-ray laser. To make a practical, tabletop-scale, X-ray laser source required taking a very different approach that involves transforming a beam of light from a visible femtosecond laser into a beam of directed X-rays. The story behind how this happened is surprising and beautiful, highlighting how powerful our ability is to manipulate nature at a quantum level. Along the way, we also learned to generate the shortest strobe light in existence - fast enough to capture the fastest charge and spin dynamics in materials. We also learned how to achieve sub-wavelength spatial resolution at soft X-ray wavelengths for the first time. These new capabilities are already impacting nano and materials science, as well as showing promise for next-generation electronics, data and energy storage devices..

Seminarios de Materia Condensada

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