Optically active mechanical modes of tapered optical fibers

Author(s): C. Wuttke, G. D. Cole, A. Rauschenbeutel

Journal: Phys. Rev. A

Volume: 88

Page(s): 061801

Year: 2013

DOI Number: 10.1103/PhysRevA.88.061801

Link: Link to publication


Tapered optical fibers with a nanofiber waist are widely used tools for efficient coupling of light to photonic devices or quantum emitters via the nanofiber's evanescent field. In order to ensure well-controlled coupling, the phase and polarization of the nanofiber guided light field have to be stable. Here, we show that in typical tapered optical fibers these quantities exhibit high-frequency thermal fluctuations. They originate from high-Q torsional oscillations that opto-mechanically couple to the nanofiber-guided light. We present a simple ab-initio theoretical model that quantitatively explains the torsional mode spectrum and that can be used to design tapered optical fibers with tailored mechanical properties.

Note: http://arxiv.org/abs/1311.0916

Aspelmeyer Group Aspelmeyer Group , Rauschenbeutel Group