Affiliation:
1. The James Franck Institute, and The Pritzker School of Molecular Engineering, The University of Chicago
Abstract
Optical cavities have found widespread use in interfacing to quantum
emitters. Concerns about backreflection and resulting loss, however,
have largely prevented the placement of optics such as lenses or
modulators within high-finesse cavities. In this work, we demonstrate
a million-fold suppression of backreflections from lenses within a
twisted optical cavity. We achieve this by quantitatively exploring
backscatter in Fabry–Perot resonators, separating the effect into
three physical sectors: polarization, mode envelope, and transverse
mode profile. We describe the impact of each of these sectors and
demonstrate how to minimize backreflections within each. This
culminates in measured effective reflectivities below the
part-per-billion level for the fundamental mode. Additionally, we show
that beams carrying orbital angular momentum experience up to
10
4
times additional suppression, limited
only by the density of states of other cavity modes. The understanding
and techniques described in this work could expand the utility of
optical resonators in topics ranging from quantum optics and cavity
quantum electrodynamics to ring resonators and laser gyroscopes.
Funder
Air Force Office of Scientific
Research
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献