Phase-Locked, Low-Noise, Frequency Agile Titanium: Sapphire Lasers for Simultaneous Atom Interferometers
Atomic Physics
2009-11-11 v2 Optics
Abstract
We demonstrate phase lock of two >1.6W Titanium:sapphire lasers with a phase noise of -138dBc/Hz at 1MHz from the carrier, using an intra-cavity electro-optic phase modulator. The residual phase variance is 2.5 10^(-8)rad^2 integrated from 1Hz to 10kHz. Instantaneous offset frequency steps of up to 4MHz are achieved within 200ns. Simultaneous atom interferometers can make full use of this ultra-low phase noise in differential measurements by suppressing common influences from vibration of optics.
Cite
@article{arxiv.physics/0507187,
title = {Phase-Locked, Low-Noise, Frequency Agile Titanium: Sapphire Lasers for Simultaneous Atom Interferometers},
author = {Holger Mueller and Sheng-wey Chiow and Quan Long and Steven Chu},
journal= {arXiv preprint arXiv:physics/0507187},
year = {2009}
}
Comments
Additional phase-noise data and references; to appear in Optics Letters. 3 pages, 4 figures