Polarization Limits in K-Rb Spin-Exchange Mixtures

TL;DR

This paper investigates the limits of polarization in K-Rb spin-exchange mixtures by measuring optical absorption in K vapor with high-pressure He gas, informing the maximum achievable polarization in hybrid optical pumping.

Contribution

It provides experimental measurements that establish polarization limits in K-Rb mixtures under high-pressure helium conditions, advancing understanding of spin-exchange optical pumping.

Findings

Set a polarization limit in hybrid spin-exchange optical pumping.

Measured optical absorption of K vapor at 795 nm with high-pressure He.

Identified constraints on polarization attainable in the system.

Abstract

We present measurements of the optical absorption of K vapor at 795 nm due to the presence of high pressure He gas. The results set a limit on the polarization attainable in hybrid spin-exchange optical pumping of He-3.