Professor Jon Marangos

Leeuwenburgh J, Cooper B, Averbukh V, Marangos JP, Ivanov Met al., 2014, Reconstruction of correlation-driven electron-hole dynamics by high-harmonic-generation spectroscopy, Physical Review A, Vol: 90, ISSN: 1094-1622

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Wyatt AS, Matia-Hernando P, Johnson AS, Alexander O, Chapman R, Cacho C, Austin DR, Tisch JWG, Marangos JP, Springate Eet al., 2014, Compression and amplification of SWIR single-cycle pulses for water window attosecond pulse generation

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Wyatt AS, Matia-Hernando P, Johnson AS, Alexander O, Chapman R, Cacho C, Austin DR, Tisch JWG, Marangos JP, Springate Eet al., 2014, Compression and amplification of SWIR single-cycle pulses for water window attosecond pulse generation

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Johnson AS, Miseikis L, Wood DA, Austin DR, Brahms C, Jarosch S, Struber CS, Ye P, Marangos JPet al., 2014, HHG generated soft X-ray supercontinuum for absorption spectroscopy

We report the generation of a soft X-ray supercontinuum in the 150-450 eV photon energy range using HHG from a 1.5 cycle CEP stable intense laser pulse at 1800 nm which was used to measure XANES spectra of a 200 nm polythiophene (P3HT) film.

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Oppermann M, Weber SJ, Morales F, Richter M, Patchkovskii S, Csehi A, Vibok A, Ivanov M, Smirnova O, Marangos JPet al., 2014, Control and identification of strong field dissociative channels in CO<SUP>+</SUP>₂ via molecular alignment, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, Vol: 47, ISSN: 0953-4075

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• Citations: 3

Lopez-Quintas I, Oujja M, Sanz M, Benitez-Canete A, Hutchison C, de Nalda R, Martin M, Ganeev RA, Marangos JP, Castillejo Met al., 2014, Characterization of laser-induced plasmas of nucleobases: Uracil and thymine, 5th European-Materials-Research-Society Symposium on Laser Material Interactions for Micro- and Nano- Applications, Publisher: ELSEVIER, Pages: 299-302, ISSN: 0169-4332

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• Citations: 8

Haessler S, Balciunas T, Fan G, Andriukaitis G, Pugzlys A, Baltuska A, Witting T, Squibb R, Zair A, Tisch JWG, Marangos JP, Chipperfield LEet al., 2014, Optimization of quantum trajectories driven by strong-field waveforms, Physical Review X, Vol: 4, ISSN: 2160-3308

Quasifree field-driven electron trajectories are a key element of strong-field dynamics. Upon recollision with the parent ion, the energy transferred from the field to the electron may be released as attosecond-duration extreme ultaviolet emission in the process of high-harmonic generation. The conventional sinusoidal driver fields set limitations on the maximum value of this energy transfer and the efficient return of the launched electron trajectories. It has been predicted that these limits can be significantly exceeded by an appropriately ramped-up cycle shape [L. E. Chipperfield et al., Phys. Rev. Lett. 102, 063003 (2009)]. Here, we present an experimental realization of similar cycle-shaped waveforms and demonstrate control of the high-harmonic generation process on the single-atom quantum level via attosecond steering of the electron trajectories. With our improved optical cycles, we boost the field ionization launching the electron trajectories, increase the subsequent field-to-electron energy transfer, and reduce the trajectory duration. We demonstrate, in realistic experimental conditions, 2 orders of magnitude enhancement of the generated extreme ultraviolet flux together with an increased spectral extension. This application, which is only one example of what can be achieved with cycle-shaped high-field light waves, has significant implications for attosecond spectroscopy and molecular self-probing.

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Hutchison C, Houver S, Lin N, Hoffmann DJ, McGrath F, Siegel T, Austin DR, Zair A, Salieres P, Marangos JPet al., 2014, Electron trajectory control of odd and even order harmonics in high harmonic generation using an orthogonally polarised second harmonic field, JOURNAL OF MODERN OPTICS, Vol: 61, Pages: 608-614, ISSN: 0950-0340

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• Citations: 8

Hoffmann DJ, Hutchison C, Zair A, Marangos JPet al., 2014, Control of temporal mapping and harmonic intensity modulation using two-color orthogonally polarized fields, PHYSICAL REVIEW A, Vol: 89, ISSN: 1050-2947

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• Citations: 16

McGrath F, Siegel T, Austin D, Marangos Jet al., 2014, High-harmonic-generation spectroscopy is extended to new types of molecules, LASER FOCUS WORLD, Vol: 50, Pages: 29-+, ISSN: 1043-8092

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• Citations: 1

Ganeev RA, Abdelrahman Z, Frank F, Witting T, Okell WA, Fabris D, Hutchison C, Marangos JP, Tisch JWGet al., 2014, Spatial coherence measurements of non-resonant and resonant high harmonics generated in laser ablation plumes, APPLIED PHYSICS LETTERS, Vol: 104, ISSN: 0003-6951

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• Citations: 15

Okell WA, Witting T, Fabris D, Austin DR, Bacoum M, Ricci A, Jullien A, Walke D, Marangos JP, Lopez-Martens R, Tisch JWGet al., 2014, Carrier-envelope phase performance of hollow-fiber pulse compression for high-energy, single-cycle pulse generation

We investigate the performance and carrier-envelope phase (CEP) stability of hollowfiber pulse compression for high-energy, close to single-cycle duration pulses. We find the onset of an ionization-induced CEP instability, which saturates above 1.25mJ.

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Buades B, Okell WA, Sonnefraud Y, Hengster J, Lei DY, Uphues T, Maier SA, Marangos JP, Tisch JWGet al., 2014, Determining changes in metallic nanoparticles due to sputter cleaning

Photoelectron studies in attoscience could be used to characterise plasmons excited in nanoparticles using few-cycle femtosecond pulses. We have used ion bombardment to sputter clean gold nanoparticles without significantly modifying their morphology. © OSA 2014.

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Okell WA, Fabris D, Rahmani M, Sonnefraud Y, Hengster J, Walke D, Lei DY, Maier SA, Uphues T, Witting T, Marangos JP, Tisch JWGet al., 2014, Attosecond streaking on gold films

We demonstrate attosecond streaking on thin Au films. This is the first streaking measurement on Au, and also the first demonstration of streaking on a non-crystalline, non-UHVprepared sample. © OSA 2014.

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Buades B, Okell WA, Sonnefraud Y, Hengster J, Lei DY, Uphues T, Maier SA, Marangos JP, Tisch JWGet al., 2014, Determining changes in metallic nanoparticles due to sputter cleaning

Photoelectron studies in attoscience could be used to characterise plasmons excited in nanoparticles using few-cycle femtosecond pulses. We have used ion bombardment to sputter clean gold nanoparticles without significantly modifying their morphology. © OSA 2014.

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Buades B, Okell WA, Sonnefraud Y, Hengster J, Lei DY, Uphues T, Maier SA, Marangos JP, Tisch JWGet al., 2014, Determining changes in metallic nanoparticles due to sputter cleaning

Photoelectron studies in attoscience could be used to characterise plasmons excited in nanoparticles using few-cycle femtosecond pulses. We have used ion bombardment to sputter clean gold nanoparticles without significantly modifying their morphology. © OSA 2014.

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Austin DR, Weber SJ, Matía-Hernando P, Witting T, Siegel T, Tisch JWG, Marangos JPet al., 2014, Generation and characterization of few-cycle phase-controlled 1.7μm pulses

We generate 9 fs 1.7 μm 360 μJ pulses by hollow fiber compression. Complete 3D simulations show good agreement across a range of fiber pressures and elucidate the role of shock formation and Kerr effect saturation.

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McGrath F, Hawkins P, Simpson E, Siegel T, Diveki Z, Austin D, Zair A, Castillejo M, Marangos JPet al., 2014, Extending HHG Spectroscopy to New Molecular Species, Conference on Ultrafast Phenomena and Nanophotonics XVIII, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X

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• Citations: 3

Weber SJ, Oppermann M, Marangos JP, 2013, Role of Rotational Wave Packets in Strong Field Experiments, PHYSICAL REVIEW LETTERS, Vol: 111, ISSN: 0031-9007

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• Citations: 25

Wyatt AS, Witting T, Schiavi A, Fabris D, Marangos JP, Tisch JWG, Walmsley IAet al., 2013, Attosecond sampling of arbitrary optical waveforms

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Oppermann M, Weber SJ, Frasinski LJ, Ivanov MY, Marangos JPet al., 2013, Multichannel contributions in the nonsequential double ionization of CO₂, PHYSICAL REVIEW A, Vol: 88, ISSN: 1050-2947

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• Citations: 21

Weber SJ, Oppermann M, Ivanov MY, Marangos JPet al., 2013, Ellipticity dependence of strong field electron recollision for molecular structural imaging, JOURNAL OF MODERN OPTICS, Vol: 60, Pages: 1379-1387, ISSN: 0950-0340

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• Citations: 7

Okell WA, Witting T, Fabris D, Austin D, Bocoum M, Frank F, Ricci A, Jullien A, Walke D, Marangos JP, Lopez-Martens R, Tisch JWGet al., 2013, Carrier-envelope phase stability of hollow fibers used for high-energy few-cycle pulse generation, Optics Letters, Vol: 38, Pages: 3918-3921, ISSN: 1539-4794

We investigated the carrier-envelope phase (CEP) stability of hollow-fiber compression for high-energy few-cycle pulse generation. Saturation of the output pulse energy is observed at 0.6 mJ for a 260 μm inner-diameter, 1 m long fiber, statically filled with neon. The pressure is adjusted to achieve output spectra supporting sub-4-fs pulses. The maximum output pulse energy can be increased to 0.8 mJ by either differential pumping (DP) or circularly polarized input pulses. We observe the onset of an ionization-induced CEP instability, which saturates beyond input pulse energies of 1.25 mJ. There is no significant difference in the CEP stability with DP compared to static-fill.

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Ganeev RA, Witting T, Hutchison C, Strelkov VV, Frank F, Castillejo M, Lopez-Quintas I, Abdelrahman Z, Tisch JWG, Marangos JPet al., 2013, Comparative studies of resonance enhancement of harmonic radiation in indium plasma using multicycle and few-cycle pulses, PHYSICAL REVIEW A, Vol: 88, ISSN: 1050-2947

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• Citations: 35

Leeuwenburgh J, Cooper B, Averbukh V, Marangos JP, Ivanov Met al., 2013, High-Order Harmonic Generation Spectroscopy of Correlation-Driven Electron Hole Dynamics., Physical Review Letters, Vol: 111

We show how high-order harmonic generation spectroscopy can be used to follow correlation-driven electron hole dynamics with attosecond time resolution. The technique is applicable both to normal Auger transitions and to electron hole migration processes that do not lead to secondary electron emission. We theoretically simulate the proposed spectroscopy for M_{4,5}NN Auger decay in Kr and for correlation-driven inner-valence hole dynamics in trans-butadiene and propanal.

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Ganeev RA, Hutchison C, Lopez-Quintas I, McGrath F, Lei DY, Castillejo M, Marangos JPet al., 2013, Ablation of nanoparticles and efficient harmonic generation using a 1-kHz laser, PHYSICAL REVIEW A, Vol: 88, ISSN: 1050-2947

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• Citations: 26

Marangos JP, 2013, Ultrafast Nonlinear Optics, Ultrafast Nonlinear Optics, Editors: Thomson, Leburn, Reid, Publisher: Springer, ISBN: 9783319000169

This book covers a complete range of topics, both applied and fundamental in nature, in the area of ultrafast nonlinear optics. Covers generation and measurement of ultrashort pulses of light, and much more.

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Henkel J, Witting T, Fabris D, Lein M, Knight PL, Tisch JWG, Marangos JPet al., 2013, Prediction of attosecond light pulses in the VUV range in a high-order-harmonic-generation regime, PHYSICAL REVIEW A, Vol: 87, ISSN: 1050-2947

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• Citations: 38

Zair A, Siegel T, Sukiasyan S, Risoud F, Brugnera L, Hutchison C, Diveki Z, Auguste T, Tisch JWG, Salieres P, Ivanov MY, Marangos JPet al., 2013, Molecular internal dynamics studied by quantum path interferences in high order harmonic generation, CHEMICAL PHYSICS, Vol: 414, Pages: 184-191, ISSN: 0301-0104

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• Citations: 22

Wyatt AS, Witting T, Schiavi A, Fabris D, Marangos JP, Tisch JWG, Walmsley IAet al., 2013, Attosecond sampling of arbitrary optical waveforms

Arbitrary waveform synthesis [1] offers the possibility to study and control electronic and nuclear processes with attosecond temporal resolution [2], and to enable 'sub-cycle' pulses and optimize high harmonic generation (HHG) [3, 4]. Appropriate metrology is critical to ensure the correct waveform is generated at the location of the experiment. Solutions to this measurement problem must deliver (a) adequate bandwidth; (b) sufficient efficiency; (c) sensitivity to phase across well-separated spectral components; (d) sensitivity to carrier-envelope phase (CEP); (e) reliable calibration procedures that can account for propagation between the measurement instrument and the experiment itself. Here we describe an experimental demonstration of the first all-optical method to characterize in-situ the real electric field of an arbitrary optical waveform based on HHG. © 2013 IEEE.

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