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  Role of intraband dynamics in the generation of circularly polarized high harmonics from solids

Klemke, N., Mücke, O. D., Rubio, A., Kärtner, F. X., & Tancogne-Dejean, N. (2020). Role of intraband dynamics in the generation of circularly polarized high harmonics from solids. Physical Review B, 102(10): 104308. doi:10.1103/PhysRevB.102.104308.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-ADA7-B Version Permalink: http://hdl.handle.net/21.11116/0000-0007-30A8-5
Genre: Journal Article

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PhysRevB.102.104308.pdf (Publisher version), 3MB
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© American Physical Society

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https://arxiv.org/abs/2007.03944 (Preprint)
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https://dx.doi.org/10.1103/PhysRevB.102.104308 (Publisher version)
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 Creators:
Klemke, N.1, 2, 3, Author
Mücke, O. D.1, 2, Author
Rubio, A.1, 4, Author              
Kärtner, F. X.1, 2, 3, 5, Author
Tancogne-Dejean, N.1, 4, Author              
Affiliations:
1Center for Free-Electron Laser Science CFEL, ou_persistent22              
2Deutsches Elektronen-Synchrotron DESY, ou_persistent22              
3Physics Department, University of Hamburg, ou_persistent22              
4Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
5Hamburg Centre for Ultrafast Imaging, ou_persistent22              

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 Abstract: Recent studies have demonstrated that the polarization states of high harmonics from solids can differ from those of the driving pulses. To gain insights on the microscopic origin of this behavior, we perform one-particle intraband-only calculations and reproduce some of the most striking observations. For instance, our calculations yield circularly polarized harmonics from elliptically polarized pulses that sensitively depend on the driving conditions. Furthermore, we perform experiments on ZnS and find characteristics partly similar to those reported from silicon. Comparison to our intraband-only calculations shows reasonable qualitative agreement for a below-band-gap harmonic. We show that intraband dynamics predict depolarization effects that gain significance with higher field strengths and we observe such effects in the experimental data. For harmonics above the band gap, interband dynamics become important and the high-harmonic response to elliptical excitation looks systematically different. Our work proposes a method to distinguish between different high-harmonic generation mechanisms and it could pave the way to compact solid-state high-harmonic sources with controllable polarization states.

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Language(s): eng - English
 Dates: 2020-08-282020-07-062020-08-312020-09-282020-09-01
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: arXiv: 2007.03944
DOI: 10.1103/PhysRevB.102.104308
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 102 (10) Sequence Number: 104308 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008