Institute for the Frontier of Attosecond
Science and Technology (iFAST)
10/24/2017 Published in Nature Communications: "High-harmonic generation in amorphous solids"
10/19/2017 Professors Abouraddy, Chang and Christodoulides honored as Luminary Leaders
11/14/2016 2016 Joint Attosecond MURI Annual Meeting
7/20/2016 Paper by Professor Zenghu Chang among the top downloads of the Journal of the Optical Society
4/6/2016 Professor Zenghu Chang receives Pegasus Professor award
11/12/2015 2015 Joint-Attosecond-MURI Annual Meeting
12/22/2014 Graduate Student Yan Cheng Receives Northrop Grumman Scholarship

Published in Nature Communications: "High-harmonic generation in amorphous solids"

A paper by Professor Zenghu Chang, Dr. Michael Chini and others titledĀ "High-harmonic generation in amorphous solids" has been published in Nature Communications.

High-harmonic generation in isolated atoms and molecules has been widely utilized in extreme ultraviolet photonics and attosecond pulse metrology. Recently, high-harmonic generation has been observed in solids, which could lead to important applications such as all-optical methods to image valance charge density and reconstruct electronic band structures, as well as compact extreme ultraviolet light sources. So far these studies are confined to crystalline solids; therefore, decoupling the respective roles of long-range periodicity and high density has been challenging. Here we report the observation of high-harmonic generation from amorphous fused silica. We decouple the role of long-range periodicity by comparing harmonics generated from fused silica and crystalline quartz, which contain the same atomic constituents but differ in long-range periodicity. Our results advance current understanding of the strong-field processes leading to high-harmonic generation in solids with implications for the development of robust and compact extreme ultraviolet light sources.

Posted Tuesday, October 24, 2017

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