Revealing molecular structure and dynamics through high-order harmonic generation driven by mid-IR fields

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.051802· OSTI ID:21408766

Torres, R; Siegel, T; Brugnera, L; Ivanov, M Yu; Marangos, J P ^[1]; Procino, I ^[2]; Underwood, Jonathan G ^[2]; Altucci, C; Velotta, R ^[3]; Springate, E; Froud, C; Turcu, I C. E. ^[4]; Patchkovskii, S ^[5]; Smirnova, O ^[6]

---

1. Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW (United Kingdom)
2. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)
3. Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia and Dipartimento di Scienze Fisiche, Universita di Napoli 'Federico II', Naples (Italy)
4. Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom)
5. Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6 (Canada)
6. Max-Born-Institute, 2a Max-Born-Strasse, Berlin D-12489 (Germany)

High-order harmonic generation (HHG) from molecules produces spectra that are modulated by interferences that encode both the static structure and the electron dynamics initiated by interaction with the laser field. Using a midinfrared (mid-IR) laser at 1300 nm, we are able to study the region of the harmonic spectrum containing such interferences in CO{sub 2} over a wide range of intensities. This allows for isolation and characterization of interference minima arising due to subcycle electronic dynamics triggered by the laser field, which had previously been identified but not systematically separated. Our experimental and theoretical results demonstrate important steps toward combining attosecond temporal and angstrom-scale spatial resolution in molecular HHG imaging.

• OSTI ID: 21408766
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.051802; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON DIOXIDE
ELECTRONS
HARMONIC GENERATION
INTERACTIONS
INTERFERENCE
LASER RADIATION
MOLECULAR STRUCTURE
SPATIAL RESOLUTION
SPECTRA
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
FREQUENCY MIXING
LEPTONS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
RESOLUTION