High-finesse nanofiber Fabry-P\'{e}rot resonator in a portable storage container

TL;DR

This paper introduces a portable nitrogen-filled container for storing high-finesse nanofiber Fabry-Pérot resonators, maintaining their optical quality and enabling flexible, location-independent quantum optics and sensing experiments.

Contribution

The authors develop a portable storage method that preserves nanofiber resonator quality, facilitating broader application and experimentation in various environments.

Findings

Optical loss increased by less than 0.08% over a week in storage.

Reflection spectroscopy effectively evaluates mirror transmittance and internal losses.

The storage method maintains resonator performance during transportation.

Abstract

We present characterization and storage methods for a high-finesse nanofiber Fabry-P\'{e}rot resonator. Reflection spectroscopy from both ends of the resonator allows for evaluation of the mirror transmittances and optical loss inside the resonator. To maintain the quality of the nanofiber resonator after the fabrication, we have developed a portable storage container. By filling the container with dry, clean nitrogen gas, we can prevent contamination of the nanofiber during storage. This approach allows us to minimize the additional optical loss to less than 0.08% over a week. The portable container facilitates both the fabrication and subsequent experimentation with the resonator in different locations. This flexibility expands the range of applications, including quantum optics, communication, and sensing.