Projects per year
Abstract
We study electromagnetically induced transparency (EIT) in a heated potassium vapor cell, using a simple optical setup with a single free-running diode laser and an acousto-optic modulator. Despite the fact that the Doppler width is comparable to the ground state hyperfine splitting, transparency windows with deeply sub-natural line widths and large group indices are obtained. A longitudinal magnetic field is used to split the EIT feature and induce magneto-optical anisotropy. Using the beat note between co-propagating coupling and probe beams, we perform a heterodyne measurement of the circular dichroism (and therefore birefringence) of the EIT medium. The observed spectra reveal that lin‖lin polarizations lead to greater anisotropy than lin⊥lin. A simplified ‖analytical model encompassing sixteen Zeeman states and eighteen Λ subsytems reproduces the experimental observations.
Original language | English |
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Pages (from-to) | 15494-15505 |
Journal | Optics Express |
Volume | 24 |
Issue number | 14 |
DOIs | |
Publication status | Published - 29 Jun 2016 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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Dive into the research topics of 'Coherent control of group index and magneto-optical anisotropy in a multilevel atomic vapor'. Together they form a unique fingerprint.Projects
- 2 Finished
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PhD Student Balazs Megyeri - Dispersion Controlled Cold Atom Ring Laser for Precision Timing and Sensing
Goldwin, J.
Defence and Science Technology Laboratory
1/10/14 → 30/09/18
Project: Other Government Departments
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Collective Strong Coupling of Light and Matter with Cold Atoms in a Ring Resonator
Goldwin, J.
Engineering & Physical Science Research Council
30/05/12 → 29/05/14
Project: Research
Datasets
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Coherent control of group index and magneto-optical anisotropy in a multilevel atomic vapor
Lampis, A. (Creator), Culver, R. (Creator), Megyeri, B. (Creator) & Goldwin, J. (Creator), University of Birmingham, 2016
DOI: 10.25500/eData.bham.00000046, http://epapers.bham.ac.uk/2130/
Dataset