Prof. Claus Ropers Profile

Prof. Claus Ropers

Professor at Georg August Univ Göttingen

SPIE Involvement:

Conference Program Committee | Author

Publications (17)

Proceedings Article | 4 October 2024 Presentation

Quantum effects in the interaction of low-energy electrons with optical fields

Adamantios Synanidis, P. André D. Gonçalves, Claus Ropers, F. Javier García de Abajo

Proceedings Volume 13117, 131170T (2024) https://doi.org/10.1117/12.3027933

KEYWORDS: Electrons, Near field optics, Quantum fields, Quantum effects, Quantum regime, Light absorption, Electron microscopy, Electron microscopes, Ultrafast phenomena, Reflection

Read Abstract +

Proceedings Article | 16 August 2024 Poster

Quantum coherent modulation of free electrons by integrated photonics

Jan-Wilke Henke, Arslan Raja, F. Jasmin Kappert, Yujia Yang, Armin Feist, Guanhao Huang, Germaine Arend, Rui Ning Wang, Zheru Qiu, Ofer Kfir, Aleksandr Tusnin, Alexey Tikan, Claus Ropers, Tobias Kippenberg

Proceedings Volume PC13106, PC1310616 (2024) https://doi.org/10.1117/12.3027160

KEYWORDS: Electrons, Quantum coherence, Modulation, Microresonators, Integrated photonics, Laser resonators, Electron beams, Quantum light, Quantum fields, Optical resonators

Read Abstract +

Proceedings Article | 2 August 2024 Presentation

Generating correlated pairs of free electrons and waveguide photons

Jan-Wilke Henke, Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, Arslan Raja, F. Jasmin Kappert, Jiahe Pan, Hugo Lourenco-Martins, Zheru Qiu, Junqiu Liu, Ofer Kfir, Tobias Kippenberg, Claus Ropers

Proceedings Volume PC13106, PC1310607 (2024) https://doi.org/10.1117/12.3027148

KEYWORDS: Photons, Electrons, Quantum correlations, Waveguides, Scattering, Quantum states, Quantum entanglement, Integrated optics, Tunable filters, Silicon photonics

Read Abstract +

Proceedings Article | 9 June 2023 Presentation

Free-electron-heralded single-photon generation in high-Q microresonators

Germaine Arend, Guanhao Huang, Armin Feist, Yujia Yang, Jan-Wilke Henke, Arslan Sajid Raja, F. Jasmin Kappert, Rui Wang, Hugo Lourenço-Martins, Zheru Qiu, Junqiu Liu, Ofer Kfir, Tobias Kippenberg, Claus Ropers

Proceedings Volume PC12570, PC1257008 (2023) https://doi.org/10.1117/12.2665502

KEYWORDS: Electrons, Microresonators, Single photon, Scattering, Quantum optics, Quantum information, Quantum communications, Phonons, Particles, Integrated photonics

Read Abstract +

Proceedings Article | 8 June 2023 Presentation

Probing nonlinear optical dynamics with free electrons

Jan-Wilke Henke, Yujia Yang, F. Jasmin Kappert, Arslan Raja, Germaine Arend, Guanhao Huang, Armin Feist, Zheru Qiu, Rui Wang, Tobias Kippenberg, Claus Ropers

Proceedings Volume PC12569, (2023) https://doi.org/10.1117/12.2665672

KEYWORDS: Electrons, Microresonators, Electron beams, Transmission electron microscopy, Silicon photonics, Resonators, Ultrafast phenomena, Spectroscopy, Spatial resolution, Solitons

Read Abstract +

Proceedings Article | 15 March 2023 Presentation

Coherent control of the phase transition in indium nanowires on silicon

Jan Gerrit Horstmann, Hannes Böckmann, Felix Kurtz, Gero Storeck, Bareld Wit, Stefan Wippermann, Claus Ropers

Proceedings Volume PC12419, (2023) https://doi.org/10.1117/12.2647512

KEYWORDS: Silicon, Nanowires, Indium, Solid state electronics, Vibration control, Ultrafast phenomena, Switching, Structural dynamics, Solids, Solid state lasers

Read Abstract +

Proceedings Article | 8 March 2023 Presentation + Paper

Electron-photon pair states generated at a silicon nitride integrated photonics microresonator

Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, Jan-Wilke Henke, Arslan Sajid Raja, F. Jasmin Kappert, Rui Ning Wang, Hugo Lourenço-Martins, Zheru Qiu, Junqiu Liu, Ofer Kfir, Tobias Kippenberg, Claus Ropers

Proceedings Volume 12446, 124460R (2023) https://doi.org/10.1117/12.2645997

KEYWORDS: Electrons, Photons, Microresonators, Quantum correlations, Quantum entanglement, Integrated photonics, Silicon nitride, Electron beams, Quantum optics, Quantum imaging, Single photon avalanche diodes, Electron microscopy

Read Abstract +

Proceedings Article | 7 March 2022 Presentation

Modulation of cathodoluminescence emission by interference with external light

Valerio Di Giulio, Ofer Kfir, Claus Ropers, F. Javier García de Abajo

Proceedings Volume PC11999, PC119990O (2022) https://doi.org/10.1117/12.2607364

KEYWORDS: Near field optics, Modulation, Charged particle optics, Near field, Electron microscopy, Ultrafast phenomena, Transmission electron microscopy, Spectral resolution, Spatial resolution, Quantum optics

Read Abstract +

Proceedings Article | 7 March 2022 Presentation

Photonic-chip based microresonators as a platform for efficient free-electron light interaction

Jan-Wilke Henke, Arslan Raja, Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, F. Jasmin Kappert, Rui Ning Wang, Marcel Möller, Jiahe Pan, Junqiu Liu, Ofer Kfir, Tobias Kippenberg, Claus Ropers

Proceedings Volume PC11999, PC1199903 (2022) https://doi.org/10.1117/12.2608161

KEYWORDS: Microresonators, Electrons, Photonic microstructures, Scattering, Laser scattering, Quantum optics, Electron beams, Continuous wave operation, Ultrafast phenomena, Single photon

Read Abstract +

Proceedings Article | 8 March 2021 Presentation

How to capture brilliant flashes of information

Bahram Jalali, Tianwei Jiang, Serge Bielawski, Daniel Solli, Claus Ropers, Georg Herink

Proceedings Volume 11671, 1167103 (2021) https://doi.org/10.1117/12.2578843

KEYWORDS: Vibrometry, Ultrafast laser spectroscopy, Terahertz radiation, Spectroscopes, Solitons, Molecules, Microscopy, Microscopes, Information theory, Diagnostics

Read Abstract +

Proceedings Article | 20 August 2020 Presentation

Ultrafast nano-imaging of the order parameter in a structural phase transition

Till Domröse, Thomas Danz, Claus Ropers

Proceedings Volume 11497, 114970K (2020) https://doi.org/10.1117/12.2570067

KEYWORDS: Nanoimaging, Ultrafast phenomena, Imaging spectroscopy, Spatial resolution, Ultrafast laser spectroscopy, Imaging systems, Laser spectroscopy, Femtosecond phenomena, Ultrafast imaging, Temporal resolution

Read Abstract +

Proceedings Article | 12 February 2018 Open Access

Real-time observation of hidden multi-soliton dynamics in a few-cycle Ti:Sapph oscillator (Conference Presentation) (Withdrawal Notice)

Georg Herink, Felix Kurtz, Daniel Solli, Bahram Jalali, Claus Ropers

Proceedings Volume 10089, 1008904 (2018) https://doi.org/10.1117/12.2255659

KEYWORDS: Solitons, Spectroscopy, Oscillators, Mode locking, Interferometry, Femtosecond phenomena, Pulsed laser operation, Complex systems, Laser beam characterization, Fourier transforms

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 12 February 2018 Open Access

Ultrafast nanoelectronics: steering electrons in infrared near-fields (Conference Presentation) (Withdrawal Notice)

Georg Herink, Claus Ropers

Proceedings Volume 9547, 95470D (2018) https://doi.org/10.1117/12.2190376

KEYWORDS: Ultrafast phenomena, Nanoelectronics, Electrons, Infrared radiation, Near field, Plasmonics, Nanostructures, Optical properties

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 14 March 2013 Paper

Photoemission at metallic nanostructures: multiphoton and strong-field dynamics

G. Herink, D. Solli, L. Wimmer, M. Gulde, K. Echternkamp, S. Yalunin, R. Bormann, C. Ropers

Proceedings Volume 8623, 862311 (2013) https://doi.org/10.1117/12.2004853

KEYWORDS: Nanostructures, Mid-IR, Ultrafast phenomena, Physics, Pulsed laser operation, Charged particle optics, Interferometry, Electro optics, Transition metals, Quantum optics

Read Abstract +

Proceedings Article | 5 June 2010 Paper

Optical rogue waves and stimulated supercontinuum generation

Daniel Solli, Claus Ropers, Bahram Jalali

Proceedings Volume 7728, 772810 (2010) https://doi.org/10.1117/12.854662

KEYWORDS: Ocean optics, Nonlinear optics, Picosecond phenomena, Solitons, Supercontinuum generation, Ultrafast phenomena, Complex systems, Spectrometers, Modulation, Signal processing

Read Abstract +

Proceedings Article | 2 March 2010 Paper

Confined electron emission with femtosecond timing: nonlinearity, localization, enhancement

Max Gulde, Reiner Bormann, Alexander Weismann, Sergey Yalunin, Claus Ropers

Proceedings Volume 7600, 76001I (2010) https://doi.org/10.1117/12.843110

KEYWORDS: Charged particle optics, Femtosecond phenomena, Metals, Gold, Scanning tunneling microscopy, Near field optics, Ultrafast phenomena, Pulsed laser operation, Laser scattering, Absorption

Read Abstract +

Proceedings Article | 3 June 2005 Paper

Ultrafast dynamics and near-field optics of light transmission through plasmonic crystals

C. Lienau, C. Ropers, G. Stibenz, G. Steinmeyer, R. Muller, D. Park, K Lee, J. Kim, Q. Park, D. Kim

Proceedings Volume 5825, (2005) https://doi.org/10.1117/12.604641

KEYWORDS: Near field, Plasmonics, Metals, Nanostructures, Ultrafast phenomena, Gold, Crystals, Near field scanning optical microscopy, Interferometry, Surface plasmons

Read Abstract +