K
Keith A. Nelson
Researcher at Massachusetts Institute of Technology
Publications - 750
Citations - 30478
Keith A. Nelson is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Terahertz radiation & Femtosecond. The author has an hindex of 85, co-authored 727 publications receiving 26755 citations. Previous affiliations of Keith A. Nelson include Harvard University & Philips.
Papers
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Journal ArticleDOI
Cooperative photoinduced metastable phase control in strained manganite films
Jingdi Zhang,Jingdi Zhang,Xuelian Tan,Mengkun Liu,Mengkun Liu,Samuel W. Teitelbaum,Kirk Post,Feng Jin,Keith A. Nelson,Dimitri Basov,Wenbin Wu,Richard D. Averitt,Richard D. Averitt +12 more
TL;DR: In this paper, the authors demonstrate strain-engineered tuning of La2/3Ca1/3MnO3 into an emergent charge-ordered insulating phase with extreme photo-susceptibility where even a single optical pulse can initiate a transition to a long-lived hidden metallic phase.
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Direct measurement of polariton–polariton interaction strength
Yongbao Sun,Yoseob Yoon,Mark Steger,Gangqiang Liu,Loren Pfeiffer,Ken W. West,David W. Snoke,Keith A. Nelson +7 more
TL;DR: In this article, a direct measure of the polariton-polariton interaction is obtained, which is used as a means to access macroscopic displays of quantum phenomena such as Bose-Einstein condensation and superfluidity.
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Irreversible Organic Crystalline Chemistry Monitored in Real Time
Peter R. Poulin,Keith A. Nelson +1 more
TL;DR: This work monitors the photolysis of the triiodide anion, I3−, and subsequent recombination or relaxation of its reaction products, in three very different pure organic molecular crystals using a two-dimensional spatial delay gradient across the profile of a femtosecond probe pulse to monitor organic crystalline reaction dynamics.
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Coherently controlled ultrafast four-wave mixing spectroscopy.
TL;DR: A novel approach to coherent nonlinear optical spectroscopy based on two-dimensional femtosecond pulse shaping is introduced, yielding an unprecedented level of control over the interacting fields in nonlinear spectroscopic experiments.
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Onset of nondiffusive phonon transport in transient thermal grating decay
TL;DR: In this article, the authors investigated the thermal relaxation of a spatially sinusoidal temperature perturbation in a dielectric crystal at a temperature comparable to or higher than the Debye temperature.