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SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 23: Optomechanics I & Optovibronics

Q 23.2: Vortrag

Mittwoch, 8. März 2023, 11:15–11:30, A320

Optoacoustic active phonon cooling in waveguides — •Laura Blázquez Martínez1, Philipp Wiedemann1, Andreas Geilen1, Changlong Zhu1, and Birgit Stiller1,21Max Planck Institute for the Science of Light, Staudtstrasse 2, 91058, Erlangen, Germany — 2Physics department office, FAU Erlangen-Nürnberg, Staudtstr. 7 / B2, 91058, Erlangen, Germany

Optomechanical cooling is usually observed in resonator-based setups. In waveguides, active cooling via optomechanical or optoacoustic interactions is still largely unexplored. Here, we demonstrate experimentally active optoacoustic phonon cooling using the nonlinear effect of Brillouin-Mandelstam scattering in a chalcogenide glass photonic crystal fibre (PCF). The regime of height saturation for the anti-Stokes peak is demonstrated experimentally. Based on the Brillouin resonance behaviour, we show cooling by a temperature difference of ΔT ≈ 190 K from room temperature at 7.53 GHz, exceeding 3 times previously reported values.

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