Open AccessMonitoring Raman emission through state population in cold atoms confined inside a hollow-core fiber
Author(s) -
Taehyun Yoon,
Zhenghao Ding,
Jeremy Flannery,
Fereshteh Rajabi,
Michal Bajcsy
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.017592
Subject(s) - raman spectroscopy , optics , materials science , core (optical fiber) , superradiance , photon , raman scattering , spontaneous emission , atomic physics , amplified spontaneous emission , laser , physics
We study the spontaneous Raman emission in an ensemble of laser-cooled three-level Λ-type atoms confined inside a hollow-core photonic-bandgap fiber using a novel approach to observe the process. Instead of detecting the emitted light, we measure the number of atoms in the ground state as a function of Raman pump time, which eliminates the need to suppress the pump photons with a high-resolution filter. We describe how this measurement can be used to detect superradiant emission from the atomic ensembles and estimate the number of atoms required to observe Raman superradiance in atomic clouds inside a hollow-core fiber.