Point-to-point stabilized optical frequency transfer with active optics

Autor: Benjamin P. Dix-Matthews, Sascha W. Schediwy, David R. Gozzard, Etienne Savalle, François-Xavier Esnault, Thomas Lévèque, Charles Gravestock, Darlene D’Mello, Skevos Karpathakis, Michael Tobar, Peter Wolf

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)

Atomic clocks and their networks are useful tools for optical communications and frequency metrology. Here the authors use phase stabilization and active tip-tilt to suppress atmospheric effects and enable optical frequency transfer through free-spac

Externí odkaz: https://doaj.org/article/05fc4052970040a68e0158266aff628f

Sensitivity Characterisation of a Parametric Transducer for Gravitational Wave Detection Through Optical Spring Effect

Autor: Jeremy Bourhill, Odylio D Aguiar, Natália C. Carvalho, Michael Tobar, O.D. Aguiar

We present the characterisation of the most recent parametric transducers designed to enhance the Mario Schenberg Gravitational Wave Detector sensitivity. The transducer is composed of a microwave re-entrant cavity that attaches to the gravitational

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1aa8ae546511f2c410ef698ea077b651
http://arxiv.org/abs/1703.02179

Precision close-to-carrier phase noise simulation of BAW oscillators

Autor: Maxim Goryachev, Serge Galliou, Michael Tobar

Publikováno v: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2011, 58 (1), pp.6-9. ⟨10.1109/TUFFC.2011.1768⟩

International audience; Based on a commercial simulation tool, the influence of BAW resonator noise on the resulting oscillator phase noise is revisited. The parametric model of the resonator uses experimental data, and includes an f(-2) noise not of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97bc97fda3efb9a78b7a07e5d5e6e3a4
https://doi.org/10.1109/tuffc.2011.1768

Microwave cavity search for paraphotons

Autor: Rhys Povey, John Hartnett, Michael Tobar, J. G. Hartnett, P. C. Abbott

Publikováno v: AIP Conference Proceedings.

In this proceeding we report the first results of a microwave cavity search for hidden sector photons. Using a pair of isolated resonant cavities we look for ‘light shining through a wall’ from photon—hidden sector photon oscillations. Our prot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e5f9ad4f68426d12d1d3c57e39ad09e6
https://doi.org/10.1063/1.3460192

Long term operation, performance and applications of cryogenic sapphire oscillators

Autor: Michael Tobar, Ivanov, En, Locke, Cr, Stanwix, Pl, Hartnett, Jg, Luiten, An, Bize, S., Santarelli, G., Wolf, P., Clairon, A., Warrington, Rb, Fisk, Pth, Lawn, Ma, Wouters, Mj, Guillemot, P.

Publikováno v: ResearcherID

Cryogenic sapphire oscillators (CSO) developed at UWA have now been in operation around the world continuously for many years. Such oscillators are essential for interrogating atomic frequency standards at the quantum limit of projection noise; other

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a27e57770715a034baa30d91da071ee2
https://doi.org/10.1109/freq.2005.1573957