37 citations · 131 across the 13 of their papers we have counts for
4 papers · 1 filter
Hypericin: Single molecule spectroscopy of an active natural ingredient
Quan Liu, Frank Wackenhut, Otto Hauler +4
Hypericin can be found in nature in Hypericum perforatum (St. John's Wort) and has become subject of intense biochemical research. Studies report of antidepressive, antineoplastic,…
Direct phase mapping of the light scattered by single plasmonic nanoparticles
Otto Hauler, Frank Wackenhut, Lukas A. Jakob +5
In this work, we present a novel technique to directly measure the phase shift of the optical signal scattered by single plasmonic nanoparticles in a diffraction-limited laser focu…
Tunable strong coupling of two adjacent optical λ/2 Fabry-Pérot microresonators
Achim Junginger, Frank Wackenhut, Alexander Stuhl +3
Optical half-wave microresonators enable to control the optical mode density around a quantum system and thus to modify the temporal emission properties. If the coupling rate excee…
A Dye-Sensitized CdSe Nanocrystal Optical Transistor with High ON/OFF Ratio in the First Telecom Window with 74 ns Rise Time
Krishan Kumar, Quan Liu, Jonas Hiller +5
We report an optically gated transistor composed of CdSe nanocrystals (NCs), sensitized with the dye Zinc beta-tetraaminophthalocyanine for operation in the first telecom window. T…