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  Optimal control of high-harmonic generation by intense few-cycle pulses

Solanpää, J., Budagosky, J. A., Shvetsov-Shilovski, N. I., Castro, A., Rubio, A., & Räsänen, E. (2014). Optimal control of high-harmonic generation by intense few-cycle pulses. Physical Review A, 90(5): 053402. doi:10.1103/PhysRevA.90.053402.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B303-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-2D8D-C
Genre: Journal Article

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PhysRevA.90.053402.pdf (Publisher version), 639KB
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PhysRevA.90.053402.pdf
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http://dx.doi.org/10.1103/PhysRevA.90.053402 (Publisher version)
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Locator:
http://arxiv.org/abs/1406.5893 (Preprint)
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 Creators:
Solanpää, J.1, Author
Budagosky, J. A.2, Author
Shvetsov-Shilovski, N. I.1, Author
Castro, A.2, 3, Author
Rubio, A.4, 5, Author              
Räsänen, E.1, Author
Affiliations:
1Department of Physics, Tampere University of Technology, Tampere FI-33101, Finland, ou_persistent22              
2Institute for Biocomputation and Physics of Complex Systems (BIFI) and Zaragoza Center for Advanced Modeling (ZCAM), University of Zaragoza, E-50009 Zaragoza, Spain, ou_persistent22              
3ARAID Foundation, María de Luna 11, Edificio CEEI Aragón, Zaragoza E-50018, Spain, ou_persistent22              
4Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2074320              
5Nano-Bio Spectroscopy Group and ETSF, Departamento de Física de Materiales, CFM CSIC-UPV/EHU-MPC and DIPC, Universidad del País Vasco, E-20018 San Sebastián, Spain, ou_persistent22              

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Free keywords: PACS numbers: 32.80.Rm, 42.65.Ky, 42.65.Re, 42.79.Nv
 Abstract: At the core of attosecond science lies the ability to generate laser pulses of subfemtosecond duration. In tabletop devices the process relies on high-harmonic generation, where a major challenge is to obtain high yields and high cutoff energies required for the generation of attosecond pulses. We develop a computational method that can simultaneously resolve these issues by optimizing the driving pulses using quantum optimal control theory. Our target functional, an integral over the harmonic yield over a desired energy range, leads to a remarkable cutoff extension and yield enhancement for a one-dimensional model H atom. The physical enhancement process is shown to be twofold: the cutoff extension is of classical origin, whereas the yield enhancement arises from increased tunneling probability. The scheme is directly applicable to more realistic models and, within straightforward refinements, also to experimental verification.

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Language(s): eng - English
 Dates: 2014-06-232014-11-032014-11
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevA.90.053402
BibTex Citekey: PhysRevA.90.053402
arXiv: 1406.5893
 Degree: -

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Title: Physical Review A
  Other : Phys. Rev. A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 90 (5) Sequence Number: 053402 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: /journals/resource/954925225012_2