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Atomic line vs. lens cavity filters : a comparison of their merits.

Higgins, Clare R. and Pizzey, Danielle and Mathew, Renju S. and Hughes, Ifan G. (2020) 'Atomic line vs. lens cavity filters : a comparison of their merits.', OSA continuum., 3 (4). pp. 961-970.

Abstract

We present a comparison between lens cavity filters and atomic line filters, discussing their relative merits for applications in quantum optics. We describe the design, characterization, and stabilization procedure of a lens cavity filter, which consists of a high-reflection coated commercially available plano-convex lens, and compare it to an ultra-narrow atomic band-pass filter utilizing the D2 absorption line in atomic rubidium vapor. We find that the cavity filter peak transmission frequency and bandwidth can be chosen arbitrarily but the transmission frequency is subject to thermal drift and the cavity needs stabilization to better than a few mK, while the atomic filter is intrinsically stable and tied to an atomic resonance frequency such that it can be used in a non-laboratory environment.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1364/OSAC.390604
Publisher statement:Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Date accepted:27 March 2020
Date deposited:21 April 2020
Date of first online publication:07 April 2020
Date first made open access:21 April 2020

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