L
Luis Plaja
Researcher at University of Salamanca
Publications - 187
Citations - 5226
Luis Plaja is an academic researcher from University of Salamanca. The author has contributed to research in topics: High harmonic generation & Attosecond. The author has an hindex of 30, co-authored 176 publications receiving 4403 citations. Previous affiliations of Luis Plaja include Bielefeld University & Polish Academy of Sciences.
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Journal ArticleDOI
Bright Coherent Ultrahigh Harmonics in the keV X-ray Regime from Mid-Infrared Femtosecond Lasers
Tenio Popmintchev,Ming-Chang Chen,Dimitar Popmintchev,Paul Arpin,Susannah Brown,Skirmantas Alisauskas,Giedrius Andriukaitis,Tadas Balciunas,Oliver D. Mücke,Audrius Pugzlys,Andrius Baltuška,Bonggu Shim,Samuel E. Schrauth,Alexander L. Gaeta,Carlos Hernandez-Garcia,Luis Plaja,Andreas Becker,Agnieszka Jaron-Becker,Margaret M. Murnane,Henry C. Kapteyn +19 more
TL;DR: By guiding a mid-infrared femtosecond laser in a high-pressure gas, ultrahigh harmonics can be generated that emerge as a bright supercontinuum that spans the entire electromagnetic spectrum from the ultraviolet to more than 1.6 kilo–electron volts, allowing, in principle, the generation of pulses as short as 2.5 attoseconds.
Journal ArticleDOI
Bright circularly polarized soft x-ray high harmonics for x-ray magnetic circular dichroism
Tingting Fan,Patrik Gychtol,Ronny Knut,Carlos Hernandez-Garcia,Daniel D. Hickstein,Christian Gentry,Craig W. Hogle,Dmitriy Zusin,Kevin M. Dorney,Oleg Shpyrko,Oren Cohen,Ofer Kfir,Luis Plaja,Andreas Becker,Agnieszka Jaron-Becker,Margaret M. Murnane,Henry C. Kapteyn,Tenio Popmintchev +17 more
TL;DR: This work demonstrates the feasibility of manipulating the polarization, spectrum, and temporal shape of high harmonics in the soft X-ray region by manipulating the driving laser waveform and explains the single-atom and macroscopic physics.
Journal ArticleDOI
Generation of extreme-ultraviolet beams with time-varying orbital angular momentum
Laura Rego,Kevin M. Dorney,Nathan J. Brooks,Quynh Nguyen,Chen-Ting Liao,Julio San Roman,David E. Couch,Allison Liu,Emilio Pisanty,Maciej Lewenstein,Luis Plaja,Henry C. Kapteyn,Margaret M. Murnane,Carlos Hernandez-Garcia +13 more
TL;DR: In this article, the authors introduced a property of light beams, manifested as a temporal OAM variation along a pulse: the self-torque of light, which is found in diverse physical systems (i.e., electrodynamics and general relativity).
Journal ArticleDOI
Ultraviolet surprise: Efficient soft x-ray high-harmonic generation in multiply ionized plasmas
Dimitar Popmintchev,Carlos Hernandez-Garcia,Carlos Hernandez-Garcia,Franklin Dollar,Christopher A. Mancuso,Jose A. Pérez-Hernández,Ming-Chang Chen,Amelia Hankla,Xiaohui Gao,Bonggu Shim,Alexander L. Gaeta,Maryam Tarazkar,Dmitri Romanov,Robert J. Levis,Jim Gaffney,Mark Foord,Stephen B. Libby,Agnieszka Jaron-Becker,Andreas Becker,Luis Plaja,Margaret M. Murnane,Henry C. Kapteyn,Tenio Popmintchev +22 more
TL;DR: Surprisingly, the high ultraviolet refractive indices of both neutral atoms and ions enabled effective phase matching, even in a multiply ionized plasma, which could presage a more generally efficient means of creating x-ray pulses for fundamental dynamics studies as well as technological applications.
Journal ArticleDOI
Attosecond extreme ultraviolet vortices from high-order harmonic generation.
TL;DR: A theoretical study of high-order harmonic generation (HHG) and propagation driven by an infrared field carrying orbital angular momentum (OAM) and the possibility of combining OAM and HHG phase locking to produce attosecond pulses with helical pulse structure is shown.