Static and optical field enhancement in metallic nanotips studied by two-photon photoemission microscopy and spectroscopy excited by picosecond laser pulses

Tsujino, S.; le Pimpec, F.; Raabe, J.; Buess, M.; Dehler, M.; Kirk, E.; Gobrecht, J.; Wrulich, A.
March 2009
Applied Physics Letters;3/2/2009, Vol. 94 Issue 9, pN.PAG
Academic Journal
The authors studied the photoemission from molybdenum nanotip arrays with controlled apex curvatures by photoelectron microscopy and spectroscopy excited by 10 ps visible laser pulses under dc electric field. While two-photon photoemission microscopy demonstrates the enhancement of photoabsorption at the sharp tip apex, spatially resolved analysis of the photoelectron energy revealed anomalous energy distribution that is ascribed to the dc field enhancement and resultant barrier reduction at the tip apex. The results show the applicability of photoelectron microscopy and spectroscopy to study the distribution of dc and optical electric field enhancement in field-emitter arrays.


Related Articles

  • Angular distribution of superfluorescence energy of drops for the two-photon absorption of nano-and femtosecond laser pulses. Donchenko, V.; Zemlyanov, A.; Krasilov, M.; Panamarev, N. // Russian Physics Journal;Jan2008, Vol. 51 Issue 1, p1 

    Results of investigations into the spectral, energy, and spatial characteristics of rhodamin 6G fluorescence of a liquid drop are presented for the two-photon absorption of nano-and femtosecond laser pulses. It is demonstrated that the characteristics of stimulated radiation from different...

  • Versatile apparatus for attosecond metrology and spectroscopy. Fieß, M.; Schultze, M.; Goulielmakis, E.; Dennhardt, B.; Gagnon, J.; Hofstetter, M.; Kienberger, R.; Krausz, F. // Review of Scientific Instruments;Sep2010, Vol. 81 Issue 9, p093103 

    We present the AS-2 Attosecond Beamline at the Joint Laboratory for Attosecond Physics of the Max-Planck-Institut für Quantenoptik and Ludwig-Maximilians-Universität for time resolved pump/probe experiments with attosecond resolution. High harmonic generation and subsequent filtering of...

  • The Influence of the Surface Electron Layer on the Energy Spectrum of Photoelectrons. Yakovlev, M. A.; Fedorov, M. V. // Journal of Experimental & Theoretical Physics;Oct2002, Vol. 95 Issue 4, p705 

    The influence of the self-consistent electric field of a surface electron layer on the energy spectrum of photoelectrons emitted under the action of a picosecond laser pulse on a metallic target was determined.

  • Si–LiNbO3–air–metal structure for concentrated terahertz emission from ultrashort laser pulses. Bakunov, M. I.; Bodrov, S. B. // Applied Physics B: Lasers & Optics;Jan2010, Vol. 98 Issue 1, p1 

    A planar Si–LiNbO3–air–metal structure is proposed as a further development of the highly efficient optical-to-terahertz conversion scheme in sandwich structures that was recently demonstrated. The new structure allows one to collect the terahertz emission into one spatial...

  • Angle-resolved photoemission spectroscopy with a femtosecond high harmonic light source using a two-dimensional imaging electron analyzer. Mathias, S.; Miaja-Avila, L.; Murnane, M. M.; Kapteyn, H.; Aeschlimann, M.; Bauer, M. // Review of Scientific Instruments;Aug2007, Vol. 78 Issue 8, p083105 

    An experimental setup for time- and angle-resolved photoemission spectroscopy using a femtosecond 1 kHz high harmonic light source and a two-dimensional electron analyzer for parallel energy and momentum detection is presented. A selection of the 27th harmonic (41.85 eV) from the harmonic...

  • Absolute energy distribution of hard x rays produced in the interaction of a kilohertz femtosecond laser with tantalum targets. Gobet, F.; Hannachi, F.; Aléonard, M. M.; Chemin, J. F.; Claverie, G.; Gerbaux, M.; Malka, G.; Scheurer, J. N.; Tarisien, M.; Blasco, F.; Descamps, D.; Dorchies, F.; Fedosejevs, R.; Fourment, C.; Petit, S.; Méot, V.; Morel, P.; Hanvey, S.; Robson, L.; Liesfeld, B. // Review of Scientific Instruments;Sep2006, Vol. 77 Issue 9, p093302 

    Previous reports have indicated the anomalous excitation rate for the 6.2 keV nuclear level of 181Ta in a plasma produced with a femtosecond laser. A detailed characterization of the electrons and x-ray sources produced in such a plasma is required to interpret these results. In a preliminary...

  • Formation of an electron beam with a duration shorter than 100 fs during photoemission of electrons by femtosecond laser pulses. Mironov, B. N.; Assev, S. A.; Minogin, V. G.; Chekalin, S. V. // Journal of Experimental & Theoretical Physics;Jun2008, Vol. 106 Issue 6, p1007 

    Irradiation of a thin metal target by 38-fs laser pulses at a wavelength of 800 nm is shown to generate a beam of photoelectrons that contains a component whose duration is shorter than 100 fs. The ensemble of photoelectrons is formed by photoemission of a gold film about 10 nm thick sputtered...

  • Field-driven photoemission from nanostructures quenches the quiver motion. Herink, G.; Solli, D. R.; Gulde, M.; Ropers, C. // Nature;3/8/2012, Vol. 483 Issue 7388, p190 

    Strong-field physics, an extreme limit of light-matter interaction, is expanding into the realm of surfaces and nanostructures from its origin in atomic and molecular science. The attraction of nanostructures lies in two intimately connected features: local intensity enhancement and...

  • Absolute-phase phenomena in photoionization with few-cycle laser pulses. Paulus, G.G.; Grasbon, F.; Walther, H.; Villoresi, P.; Nisoli, M.; Stagira, S.; Priori, E.; De Silvestri, S. // Nature;11/8/2001, Vol. 414 Issue 6860, p182 

    Focuses on the effect of short laser pulse on the emission of photoelectrons. Dependence of the variation of electric field on the phase of carrier frequency; Significance of absolute phase for nonlinear processes; Ionization of atoms by a short laser pulse.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics