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physics.optics2020★ 11 cited
Beyond intensity modulation: new approaches to pump-probe microscopy
Jun Jiang, David Grass, Yue Zhou +2
Pump-probe microscopy is an emerging nonlinear imaging technique based on high repetition rate lasers and fast intensity modulation. Here we present new methods for pump-probe micr…
physics.optics2019
Levitated cavity optomechanics in high vacuum
Uroš Delić, David Grass, Manuel Reisenbauer +4
We report dispersive coupling of an optically trapped silica nanoparticle (nm diameter) to the field of a driven Fabry-Perot cavity in high vacuum (mbar).…
physics.optics2016
Optical trapping and control of nanoparticles inside evacuated hollow core photonic crystal fibers
David Grass, Julian Fesel, Sebastian G. Hofer +2
We demonstrate an optical conveyor belt for levitated nano-particles over several centimeters inside both air-filled and evacuated hollow-core photonic crystal fibers (HCPCF). Dete…