L
Liang Luo
Researcher at Iowa State University
Publications - 58
Citations - 1485
Liang Luo is an academic researcher from Iowa State University. The author has contributed to research in topics: Terahertz radiation & Topological insulator. The author has an hindex of 17, co-authored 48 publications receiving 1073 citations. Previous affiliations of Liang Luo include Ames Laboratory & United States Department of Energy.
Papers
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Journal ArticleDOI
Femtosecond population inversion and stimulated emission of dense Dirac fermions in graphene.
Tianqi Li,Liang Luo,Myron Hupalo,Jian Zhang,Jian Zhang,Michael C. Tringides,Joerg Schmalian,Joerg Schmalian,Jigang Wang +8 more
TL;DR: It is shown that strongly photoexcited graphene monolayers with 35 fs pulses quasi-instantaneously build up a broadband, inverted Dirac fermion population, revealing the evolution of the transient state from a hot classical gas to a dense quantum fluid with increasing the photoexcitation.
PatentDOI
Broadband terahertz generation of metamaterials
TL;DR: In this paper, the authors proposed a method to generate single-cycle THz pulses from a few tens of nanometers thin layer of split ring resonators via optical rectification of femtosecond laser pulses.
Journal Article
Broadband Terahertz Generation from Metamaterials
Liang Luo,Ioannis Chatzakis,Jigang Wang,F. B. P. Niesler,Martin Wegener,Thomas Koschny,Costas M. Soukoulis +6 more
TL;DR: This work demonstrates efficient single-cycle broadband terahertz generation from a thin layer of split-ring resonators with few tens of nanometers thickness by pumping at the telecommunications wavelength of 1.5 μm (200 THz) and identifies the role of optically induced nonlinear currents in split- ring resonators.
Journal ArticleDOI
Lightwave-driven gapless superconductivity and forbidden quantum beats by terahertz symmetry breaking
Xu Yang,Chirag Vaswani,C. Sundahl,M. Mootz,Liang Luo,Jong-Hoon Kang,Ilias E. Perakis,Chang-Beom Eom,Jigang Wang +8 more
TL;DR: In this paper, a subcycle dynamical symmetry breaking achieved with nonlinear oscillating terahertz photocurrents is proposed to drive moving condensate states via subcycle dynamic symmetry breaking, which can manifest via high harmonic modes beyond those allowed by equilibrium symmetries.
Journal ArticleDOI
Ultrafast terahertz snapshots of excitonic Rydberg states and electronic coherence in an organometal halide perovskite
Liang Luo,Long Men,Zhaoyu Liu,Yaroslav Mudryk,Xin Zhao,Yongxin Yao,Joong M. Park,Ruth Shinar,Joseph Shinar,Kai-Ming Ho,Ilias E. Perakis,Javier Vela,Jigang Wang +12 more
TL;DR: Exitonic Rydberg states with distinct formation pathways are revealed by observing the multiple resonant, internal quantum transitions using ultrafast terahertz quasi-particle transport in the hybrid perovskite system.