304 citations · 2.8k across the 76 of their papers we have counts for
5 papers · 2 filters
Extraction of optical Bloch modes in a photonic-crystal waveguide
S. R. Huisman, G. Ctistis, S. Stobbe +4
We perform phase-sensitive near-field scanning optical microscopy on photonic-crystal waveguides. The observed intricate field patterns are analyzed by spatial Fourier transformati…
Observation of sub-Bragg diffraction of waves in crystals
Simon R. Huisman, Rajesh V. Nair, Alex Hartsuiker +3
We investigate the diffraction conditions and associated formation of stopgaps for waves in crystals with different Bravais lattices. We identify a prominent stopgap in high-symmet…
Controlling the quality factor of a tuning-fork resonance between 9 K and 300 K for scanning-probe microscopy
Georgios Ctistis, Eric Frater, Simon R. Huisman +4
We study the dynamic response of a mechanical quartz tuning fork in the temperature range from 9 K to 300 K. Since the quality factor Q of the resonance strongly depends on tempera…
Ultimate fast optical switching of a planar microcavity in the telecom wavelength range
Georgios Ctistis, Emre Yüce, Alex Hartsuiker +4
We have studied a GaAs-AlAs planar microcavity with a resonance near 1300 nm in the telecom range by ultrafast pump-probe reflectivity. By the judicious choice of pump frequency, w…
Scattering Lens Resolves sub-100 nm Structures with Visible Light
E. G. van Putten, D. Akbulut, J. Bertolotti +3
The smallest structures that conventional lenses are able to optically resolve are of the order of 200 nm. We introduce a new type of lens that exploits multiple scattering of ligh…