Long-term wavelength stabilisation of widely modulated lasers

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dc.contributor.authorWiseman, Kieran B.
dc.contributor.authorKissinger, Thomas
dc.contributor.authorTatam, Ralph P.
dc.date.accessioned2023-09-08T10:38:40Z
dc.date.available2023-09-08T10:38:40Z
dc.date.issued2023-08-15
dc.description.abstractIn this paper, we present a novel technique for stabilisation of widely wavelength modulated lasers (>100pm) over long time scales, where modulation depths exceed the spectral width of standard reference features, such as gas absorption lines, by over an order of magnitude. The technique operates by controlling the temporal separation between successive appearances of a gas absorption line on the up and down sweeps of a sinusoidal laser wavelength modulation waveform. The influence of the signal distortions introduced by the laser intensity modulation that are associated with laser diode injection current modulation are also addressed. The technique is applied to a range-resolved interferometric system interrogating a Mach-Zehnder interferometer operating in thermally stable conditions, using an absorption feature from a fibre-coupled gas cell as a reference. Proof-of-principle measurement results achieved using this technique are presented, demonstrating a notional fractional stability of 3.9×10−7 without further correction.en_UK
dc.description.sponsorshipEngineering and Physical Sciences Research Council (EPSRC): EP/N509450/1; EP/N002520/1; EP/M020401/1 Royal Society Paul Instrument Fund: grant PI150046en_UK
dc.identifier.citationWiseman KB, Kissinger T, Tatam RP. (2023) Long-term wavelength stabilisation of widely modulated lasers, Proceedings of SPIE, Volume 12618, 2023, pp. 289-296en_UK
dc.identifier.issn0277-786X
dc.identifier.urihttps://doi.org/10.1117/12.2673684
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20192
dc.language.isoenen_UK
dc.publisherSPIEen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectFrequencyen_UK
dc.subjectWavelengthen_UK
dc.subjectStabilisationen_UK
dc.subjectModulationen_UK
dc.subjectInterferometryen_UK
dc.titleLong-term wavelength stabilisation of widely modulated lasersen_UK
dc.typeConference paperen_UK

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