Ultrafast nanooptics

Physics and applications of a novel nanometer-sized femtosecond electron source (Lienau, Ropers)

The aim of this project is to explore the microscopic physical properties and possible applications of a novel ultrafast electron source based on field enhancement at the apex of sharp metal tips. We have recently demonstrated that a fairly intense and spatially highly localized beam of electrons can be generated when focusing sub-10 fs laser pulses from a Ti:Sapphire oscillator to the apex of gold or tungsten tips. This source carries significant potential for applications in ultrafast electron microscopy and/or diffraction.


Optical field emission from resonant gold nanorods driven by femtosecond mid-infrared pulses
F. Kusa, K. E. Echternkamp, G. Herink, C. Ropers, and S. Ashihara
AIP Advances 5 (2015) 077138
Strong-Field Photoemission from Metallic Nanotips
G. Herink, D.R. Solli, M. Gulde, R. Bormann, C. Ropers.
eds.S. Sakabe, C. Lienau, R. GrundwaldProgress in Nonlinear Nano-OpticsSpringer (2015)
Highly nonlinear and ultrafast electronic phenomena in metallic nanostructures
L. Wimmer, M. Sivis, G. Herink, S. V. Yalunin, K. E. Echternkamp, C. Ropers
eds.M. Kitzler, S. GräfeUltrafast Dynamics Driven by Intense Light PulsesSpringer (2015)
Terahertz control of nanotip photoemission
L. Wimmer, G. Herink, D. R. Solli, S. V. Yalunin, K. E. Echternkamp, and C. Ropers
Nature Phys. 10 (2014) 432
Field emission at terahertz frequencies: AC-tunneling and ultrafast carrier dynamics
G. Herink, L. Wimmer and C. Ropers
New J. Phys. 16 (2014) 123005
Field localization and rescattering in tip-enhanced photoemission
S. V. Yalunin, G. Herink, D. R. Solli, M. Krüger, P. Hommelhoff, M. Diehn, A. Munk and C. Ropers
Ann. Phys. 525 (2013) L12
Field-driven photoemission from nanostructures quenches the quiver motion
G. Herink, D. R. Solli, M. Gulde, and C. Ropers
Nature 483 (2012) 190
Strong-field photoemission from surfaces: Theoretical approaches
S. V. Yalunin, M. Gulde, and C. Ropers
Phys. Rev. B 84 (2011) 195426
Ultrasmall bullets of light – Focusing few-cycle light pulses to the diffraction limit
B. Piglosiewicz, D. Sadiq, M. Maschek, S. Schmidt, P. Vasa, and C. Lienau
Optics Express 19 (2011) 14451
Adiabatic Nanofocusing Scattering-Type Optical Nanoscopy of Individual Gold Nanoparticles
D. Sadiq, J. Shirdel, J. S. Lee, E. Selishcheva, N. Park, and C. Lienau
Nano Letters 11 (2011) 1609
Superfocusing of electric or magnetic fields using conical metal tips: effect of mode symmetry on the plasmon excitation method
J. S. Lee, S. Han, J. Shirdel, S. Koo, D. Sadiq, C. Lienau, and N. Park
Optics Express 19 (2011) 12347
Tip-enhanced strong-field photoemission
R. Bormann, M. Gulde, A. Weismann, S. Y. Yalunin, and C. Ropers
Phys. Rev. Lett. 105 (2010) 147601
Ultrafast Nano-Optics
P.Vasa, C. Ropers, R. Pomraenke and C. Lienau
Laser & Photon. Rev. 3 (2009) 1
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