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Updated: May 21, 2026

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
Published on: March 13, 2013
Saturation spectroscopy of iodine in hollow-core optical fiber
Anna Lurie1, Philip S Light, James Anstie
1School of Physics, The University of Western Australia, Crawley, Western Australia 6009, Australia.
Abstract:
We present high-resolution spectroscopy of I(2) vapor that is loaded and trapped within the core of a hollow-core photonic crystal fiber (HC-PCF). We compare the observed spectroscopic features to those observed in a conventional iodine cell and show that the saturation characteristics differ significantly. Despite the confined geometry it was still possible to obtain sub-Doppler features with a spectral width of ~6 MHz with very high contrast. We provide a simple theory which closely reproduces all the key observations of the experiment.
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