Towards a monolithic optical cavity for atom detection and manipulation
S\'ebastien Gleyzes (LCFIO), Abdelkrim El Amili (LCFIO), Ronald, Cornelussen (LCFIO), Philippe Lalanne (LCFIO), Christoph I Westbrook (LCFIO),, Alain Aspect (LCFIO), J\'er\^ome Est\`eve (LPN), Gauthier Moreau (LPN),, Antony Martinez (LPN), Xavier Lafosse (LPN)
TL;DR
This paper explores the design and analysis of a monolithic Fabry-Perot optical cavity on an AlGaAs substrate for atom detection and manipulation, focusing on loss estimation and cavity finesse.
Contribution
It provides experimental loss measurements and theoretical estimates for a monolithic cavity suitable for cold atom interactions, advancing integrated quantum optics.
Findings
Intrinsic finesse of the gapped cavity is approximately 30.
Estimated cooperativity parameter for atom-cavity interaction is around 1.
Loss analysis suggests feasible cavity performance for atom detection.
Abstract
We study a Fabry-Perot cavity formed from a ridge waveguide on a AlGaAs substrate. We experimentally determined the propagation losses in the waveguide at 780 nm, the wavelength of Rb atoms. We have also made a numerical and analytical estimate of the losses induced by the presence of the gap which would allow the interaction of cold atoms with the cavity field. We found that the intrinsic finesse of the gapped cavity can be on the order of F ~ 30, which, when one takes into account the losses due to mirror transmission, corresponds to a cooperativity parameter for our system C ~ 1.
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