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  Ellipticity dependence of higher-order harmonics in solids: Unraveling the interplay between intraband and interband dynamics

Klemke, N., Di Sciacca, G., Yang, Y., Rossi, G. M., Mainz, R. E., Tancogne-Dejean, N., et al. (2017). Ellipticity dependence of higher-order harmonics in solids: Unraveling the interplay between intraband and interband dynamics. In 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). NEW YORK, NY 10017 USA: IEEE. doi:10.1109/CLEOE-EQEC.2017.8087842.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-9965-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9966-0
Genre: Conference Paper

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08087842.pdf (Publisher version), 2MB
 
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 Creators:
Klemke, N.1, 2, Author
Di Sciacca, G.1, Author
Yang, Y.1, 2, Author
Rossi, G. M.1, 2, Author
Mainz, R . E.1, 2, Author
Tancogne-Dejean, N.3, 4, Author              
Rubio, A.3, 4, Author              
Kärtner, F. X.1, 2, 5, Author
Mücke, O. D.1, 5, Author
Affiliations:
1Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, ou_persistent22              
2Physics Department, University of Hamburg, ou_persistent22              
3Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
4European Theoretical Spectroscopy Facility (ETSF), ou_persistent22              
5The Hamburg Center for Ultrafast Imaging, ou_persistent22              

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Free keywords: Harmonic analysis, Polarization, Silicon, Solid modeling, Europe, Spectroscopy
 Abstract: Recently, we introduced an ab-initio time-dependent density-functional theory (TDDFT) framework that allows us to investigate the coupled interplay between the interband and intraband mechanisms of high-harmonic generation (HHG) from solids [1] without making a-priori model assumptions or strong approximations. Here, using HHG experiments on bulk silicon samples combined with TDDFT simulations, we study the complex physics underlying anisotropic harmonic emission, as reported by You et al. [2] for the strongly anisotropic ellipticity dependence of the 19th harmonic (HH19) generated in bulk MgO. In [2], the observed anisotropy was explained with real-space trajectories in a 2D one-band model including scattering from neighboring atomic sites. Our TDDFT simulations [3] and HHG experiments reveal that the various higher-harmonic orders generated in solids exhibit qualitatively different sensitivity to driver-pulse ellipticity ε (not displayed here), resulting from a different response of intraband and interband dynamics [3], in contradiction with the model proposed in [2]. In fact, band-structure and joint-density-of-states (JDOS) effects become important [1].

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Language(s): eng - English
 Dates: 2017-10-302017
 Publication Status: Published in print
 Pages: -
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 Rev. Method: Internal
 Identifiers: DOI: 10.1109/CLEOE-EQEC.2017.8087842
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Title: Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC)
Place of Event: Munich, GERMANY
Start-/End Date: 2017-06-25 - 2017-06-29

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Title: 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Source Genre: Proceedings
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Publ. Info: NEW YORK, NY 10017 USA : IEEE
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISBN: 978-1-5090-6736-7