Nanofiber-induced losses inside an optical cavity

TL;DR

This paper investigates how nanofibers with sub-wavelength diameters affect the optical properties of high-finesse cavities, focusing on mode shape and finesse alterations caused by fiber positioning.

Contribution

It provides a detailed analysis of nanofiber-induced losses and mode modifications inside optical cavities, advancing understanding for emitter positioning in cavity QED systems.

Findings

Nanofiber diameter significantly impacts cavity finesse.

Fiber position alters mode shape and losses.

Optimal fiber placement minimizes cavity degradation.

Abstract

Optical high-finesse cavities are a well-known mean to enhance light-matter interactions. Despite large progress in the realization of strongly coupled light-matter systems, the controlled positioning of single solid emitters in cavity modes remains a challenge. We pursue the idea to use nanofibers with sub-wavelength diameter as a substrate for such emitters. This paper addresses the question how strongly optical nanofibers influence the cavity modes. We analyze the influence of the fiber position for various fiber diameters on the finesse of the cavity and on the shape of the modes.