Dynamical Backaction in an Ultrahigh-Finesse Fiber-Based Microcavity

Rochau, Felix; Arribas, Irene Sanchez; Brieussel, Alexandre; Stapfner, Sebastian; Hunger, David und Weig, Eva M. (2021): Dynamical Backaction in an Ultrahigh-Finesse Fiber-Based Microcavity. In: Physical Review Applied, Bd. 16, Nr. 1, 14013

Abstract

The use of low-dimensional objects in the field of cavity optomechanics is limited by their low scattering cross section compared with the size of the optical cavity mode. Fiber-based Fabry-Perot microcavities can feature tiny mode cross sections and still maintain a high finesse, boosting the light-matter interaction and thus enabling the sensitive detection of the displacement of minute objects. Here we present such an ultrasensitive microcavity setup with the highest finesse reported so far in loaded fiber cavities, F = 195 000. We are able to position-tune the static optomechanical coupling to a silicon nitride membrane stripe, reaching frequency pull parameters of up to vertical bar G/2 pi vertical bar = 1 GHz nm(-1). We also demonstrate radiation pressure backaction in the regime of an ultrahigh finesse up to F = 165 000.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 2331-7019
• Sprache: Englisch