High resolution optical spectroscopy in hollow core fibre for use in atomic clocks

Christopher Perrella, P. S. Light, Fetah Benabid, Thomas M. Stace, Andre Nicholas Luiten

Published Aug 1, 2011• 0 citations

Abstract

We present high resolution measurements of Doppler free features within Rubidium (Rb) filled photonic crystal hollow core fibre (HC-PCF). Measurements within a Rb filled fibre with core diameter of 35μm show broadening of only 1 MHz associated with the transit time effect. This low level of additional broadening opens the door to compact frequency standards. We present initial spectroscopy of the narrow Rb 5S→5D two-photon transition within the fibre which we will use to create a compact frequency standard.

DOI: 10.1109/iqec-cleo.2011.6193971

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