Hannover 2016 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 49: Optomechanics I

Q 49.3: Vortrag

Donnerstag, 3. März 2016, 11:30–11:45, f342

Optical trapping and control of nanoparticles inside hollow core photonic crystal fibers — •David Grass, Julian Fesel, Nikolai Kiesel, and Markus Aspelmeyer — University of Vienna

Optical levitation of nano-particles has attracted significant attention as ultra-high Q mechanical oscillators for room temperature quantum optomechanics, stochastic thermodynamics and force sensing applications. We report an optical conveyor belt for the transport of levitated nano-particles over several centimeters in air or vacuum inside a hollow-core photonic crystal fiber. Detection of the transmitted light field allows three-dimensional read-out of the particles' center of mass motion. An additional laser enables 1-dimensional radiation pressure based feedback cooling over the whole fiber length. Based on the particle motion we characterize the optical intensity distribution inside the HCPCF and measure the local pressure along the fiber when a pressure gradient is applied. A targeted application is the clean and controlled delivery of nanoparticles into a high-finesse optical cavity for levitated cavity optomechanics.