Publications
315 results found
Marangos JP, 2011, HIGH-HARMONIC GENERATION Solid progress, NATURE PHYSICS, Vol: 7, Pages: 97-98, ISSN: 1745-2473
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- Citations: 12
Ganeev RA, Hutchison C, Siegel T, et al., 2011, High-order harmonic generation from metal plasmas using 1 kHz laser pulses, JOURNAL OF MODERN OPTICS, Vol: 58, Pages: 819-824, ISSN: 0950-0340
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- Citations: 13
Marangos JP, 2011, Introduction to the new science with X-ray free electron lasers, CONTEMPORARY PHYSICS, Vol: 52, Pages: 551-569, ISSN: 0010-7514
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- Citations: 38
Vozzi C, Torres R, Negro M, et al., 2010, High harmonic generation spectroscopy of hydrocarbons, APPLIED PHYSICS LETTERS, Vol: 97, ISSN: 0003-6951
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- Citations: 44
Walker RP, Bartolini R, Bonner P, et al., 2010, Progress with the design of the UK's new light source facility, Pages: 2269-2271
Recent progress with the design of the UK's proposed New Light Source facility is presented, together with an update on the current status.
Brugnera L, Frank F, Hoffmann DJ, et al., 2010, Enhancement of high harmonics generated by field steering of electrons in a two-color orthogonally polarized laser field, OPTICS LETTERS, Vol: 35, Pages: 3994-3996, ISSN: 0146-9592
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- Citations: 45
Chipperfield LE, Robinson JS, Knight PL, et al., 2010, The generation and utilization of half-cycle cut-offs in high harmonic spectra, LASER & PHOTONICS REVIEWS, Vol: 4, Pages: 697-719, ISSN: 1863-8880
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- Citations: 12
Cryan JP, Glownia JM, Andreasson J, et al., 2010, Auger Electron Angular Distribution of Double Core-Hole States in the Molecular Reference Frame, PHYSICAL REVIEW LETTERS, Vol: 105, ISSN: 0031-9007
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- Citations: 153
Glownia JM, Cryan J, Andreasson J, et al., 2010, Time-resolved pump-probe experiments at the LCLS, OPTICS EXPRESS, Vol: 18, Pages: 17620-17630, ISSN: 1094-4087
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- Citations: 152
Marangos JP, 2010, New Light Source CDR
Conceptual Design Report for a New Light Source based on a Free Electron Laser
Skopalova E, El-Taha YC, Zair A, et al., 2010, Pulse-Length Dependence of the Anisotropy of Laser-Driven Cluster Explosions: Transition to the Impulsive Regime for Pulses Approaching the Few-Cycle Limit, PHYSICAL REVIEW LETTERS, Vol: 104, ISSN: 0031-9007
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- Citations: 39
Oujja M, de Nalda R, Lopez-Arias M, et al., 2010, CaF<sub>2</sub> ablation plumes as a source of CaF molecules for harmonic generation, PHYSICAL REVIEW A, Vol: 81, ISSN: 1050-2947
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- Citations: 31
Siegel T, Torres R, Hoffmann DJ, et al., 2010, High harmonic emission from a superposition of multiple unrelated frequency fields, OPTICS EXPRESS, Vol: 18, Pages: 6853-6862, ISSN: 1094-4087
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- Citations: 39
Torres R, Siegel T, Brugnera L, et al., 2010, Extension of high harmonic spectroscopy in molecules by a 1300 nm laser field, OPTICS EXPRESS, Vol: 18, Pages: 3174-3180, ISSN: 1094-4087
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- Citations: 59
Torres R, Siegel T, Brugnera L, et al., 2010, Revealing molecular structure and dynamics through high-order harmonic generation driven by mid-IR fields, PHYSICAL REVIEW A, Vol: 81, ISSN: 1050-2947
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 CO2 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.
Murray R, Ruiz C, Marangos JP, et al., 2010, Control of diffraction of electron wave packets on diatomic molecules using two-colour fields, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, Vol: 43, ISSN: 0953-4075
We examine the effect of two perpendicularly polarized fields of different colour on the photoelectron spectrum from an aligned diatomic molecule. We present a comparison of ab inito and S-matrix calculations of laser-induced electron diffraction. Two control schemes are examined, each intended to produce a single recollision event. The parameter space of each control scheme is explored and optimal parameters are found, and we confirm that a single recollision can be achieved.
Chipperfield LE, Tisch JWG, Marangos JP, 2010, Derivation of the perfect wave for optimising the strong-field driven electron recollision energy, JOURNAL OF MODERN OPTICS, Vol: 57, Pages: 992-998, ISSN: 0950-0340
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- Citations: 6
Cryan JP, Glownia J, Berrah N, et al., 2010, Xray-Induced Multiple Core Vacancies in Impulsively Aligned Molecules, Conference on Lasers and Electro-Optics (CLEO)/Quantum Electronics and Laser Science Conference (QELS), Publisher: IEEE
Marangos JP, 2010, <i>Journal of Modern Optics</i> celebrates 50 years of the laser, JOURNAL OF MODERN OPTICS, Vol: 57, Pages: 827-829, ISSN: 0950-0340
Smith RA, Skopalová E, El-Taha YC, et al., 2010, Anomalous Anisotropy in the Explosion of Rare-Gas Clusters Irradiated with Intense Few-Cycle Laser Pulses, International Conference on Ultrafast Phenomena, Publisher: Optical Society of America
We report anomalous anisotropy in short pulse driven cluster explosions, with more energetic ions emitted in the direction perpendicular to the laser polarization. This anisotropy decreases and eventually reverts as the pulse length is increased.
Altucci C, Velotta R, Marangos JP, 2010, Ultra-fast dynamic imaging: an overview of current techniques, their capabilities and future prospects, JOURNAL OF MODERN OPTICS, Vol: 57, Pages: 916-952, ISSN: 0950-0340
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- Citations: 20
Turcu ICE, Springate E, Froud CA, et al., 2010, Ultrafast science and development at the Artemis facility, 9th Conference on Optics - Micro- to Nanophotonics II, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 9
Ruiz C, Hoffmann DJ, Torres R, et al., 2009, Control of the polarization of attosecond pulses using a two-color field, NEW JOURNAL OF PHYSICS, Vol: 11, ISSN: 1367-2630
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- Citations: 32
Mercer IP, El-Taha YC, Kajumba N, et al., 2009, Quantum dimension of photosynthetic energy transfer revealed by powerful new laser technique, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 238, ISSN: 0065-7727
Perez-Hernandez JAPH, Hoffmann DJH, Zair AZ, et al., 2009, Extension of the cut-off in high-harmonic generation using two delayed pulses of the same colour, Pages: 1-9, ISSN: 0953-4075
We demonstrate a novel technique for an extension of the cut-off frequency in high-harmonic generation using a shaped field, consisting of two delayed pulses, identical in all parameters except a carrier envelope phase shift of pi. We obtain high harmonics up to an energy of 5.5U(p) + I(p), surpassing the conventional limit of 3.17U(p) + I(p). For high intensities approaching the threshold for barrier suppression ionization, beyond which no harmonics are generated, this mechanism acquires practical importance as a means to overcome the limit imposed by saturation. We analyse the underlying mechanism using both classical and quantum approaches, and highlight the role of the shaped field in modifying the electron trajectories in the continuum to enhance the collection of kinetic energy from the driving field. Of greatest importance are the trajectories describing electrons ionized across the first peak of the laser field which receive the enhanced kinetic energies responsible for the cut-off extension above the conventional limit. Interestingly, the most energetic trajectories do not contribute to the harmonic cut-off in the single pulse case. We conclude with a discussion of the sub-cycle structure of the emitted harmonic radiation and possible applications of the technique.
Camiolo G, Castiglia G, Corso PP, et al., 2009, Two-electron systems in strong laser fields, PHYSICAL REVIEW A, Vol: 79, ISSN: 1050-2947
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- Citations: 15
Chipperfield LE, Robinson JS, Tisch JWG, et al., 2009, Ideal Waveform to Generate the Maximum Possible Electron Recollision Energy for Any Given Oscillation Period, PHYSICAL REVIEW LETTERS, Vol: 102, ISSN: 0031-9007
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- Citations: 185
Mercer IP, El-Taha YC, Kajumba N, et al., 2009, Instantaneous Mapping of Coherently Coupled Electronic Transitions and Energy Transfers in a Photosynthetic Complex Using Angle-Resolved Coherent Optical Wave-Mixing, PHYSICAL REVIEW LETTERS, Vol: 102, ISSN: 0031-9007
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- Citations: 80
El-Taha YC, Springate E, Carley R, et al., 2008, Electron emission from atomic clusters irradiated with few cycle laser pulses
We present the first study of atomic clusters irradiated by ultra-short pulses. A weak prepulse has been shown to allow energetic coupling with the clusters enhancing the electron yield. © 2008 Optical Society of America.
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