Frequency stabilisation of a fibre-laser comb using a novel microstructured fibre
Locke, C. R., Ivanov, E. N., Light, P. S., Benabid, F. and Luiten, A. N., 2009. Frequency stabilisation of a fibre-laser comb using a novel microstructured fibre. Optics Express, 17 (7), pp. 5897-5904.
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There is great interest in developing high performance optical frequency metrology based around mode-locked fibre lasers because of their low cost, small size and long-term turnkey operation when compared to the solid-state alternative. We present a method for stabilising the offset frequency of a fibre-based laser comb using a 2f - 3f technique based around a unique fibre that exhibits strong resonant dispersive wave emission. This fibre requires lower power than conventional highly non-linear fibre to generate a suitable signal for offset frequency stabilisation and this in turn avoids the complexity of additional nonlinear steps. We generate an offset frequency signal from the mixing of a wavelength-shifted second harmonic comb with a third harmonic of the comb. Additionally, we have stabilised the repetition rate of the laser to a level better than 10(-14)/root tau, limited by the measurement system noise floor. We present the means for complete and precise measurement of the transfer function of the laser frequency controls.
|Creators||Locke, C. R., Ivanov, E. N., Light, P. S., Benabid, F. and Luiten, A. N.|
|Departments||Faculty of Science > Physics|
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