Jonathan Bass

University of Birmingham

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David C. Morris

George Washington University

Yeshpal Singh

University of Birmingham

Kai Bongs

University of Birmingham

Matthew Aldous

Defence Science and Technology Laboratory

Markus Gellesch

University of Birmingham

Jonathan Jones

University of Birmingham

Ian R. Hill

National Physical Laboratory

P. Gill

National Physical Laboratory

Ross Williams

University of Melbourne

Paul Gaynor

National Physical Laboratory

Cooperative Institutions

University of Birmingham

National Physical Laboratory

The Edgbaston Hospital

Imperial College London

BT Group (United Kingdom)

Goddard Space Flight Center

Defence Science and Technology Laboratory

Joint Quantum Institute

National Institute of Standards and Technology

The King's College

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Development of a Portable Optical Clock

David C. Morris Ian R. Hill Richard Hendricks Paul Gaynor P. Gill

The development of a portable strontium lattice clock is discussed. Solutions to many of the engineering challenges required to build the next generation of portable and ultraprecise clocks will be presented. In particular, a) the realisation of a compact laser module which produces multiple stable laser frequencies required for the experiment and b) the progress made in the development of the atomics module.

Realisation

10.1109/fcs.2019.8856051

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A Novel Laser Activated Atom Source for Portable Strontium Optical Lattice Atomic Clocks

Jonathan Bass Matthew Aldous David C. Morris Yeshpal Singh Jonathan Jones

Atomic clocks have been in common use since the 1950s and over this period the clock community has had two main goals: increasing the performance of the clocks and increasing their portability. At Birmingham we aim to compress a strontium optical lattice clock, a clock with an extremely high accuracy, into a portable package. Many novel approaches need to be employed to allow such a clock to operate with a favorable SWaP while maintaining the low instability and uncertainty that makes optical clocks a desirable frequency standard. The focus of this work is to use laser activation of a strontium compound as the atomic source for the clock. Previously work published by this group [1] demonstrated that it is possible to release the strontium atoms from strontium oxide successfully load a magneto-optical trap (MOT).

Optical lattice

Atom optics

Strontium oxide

10.1109/fcs.2019.8856084

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Route to a Portable Optical Clock

Matthew Aldous S. Viswam Jonathan Bass Marco Menchetti Qasim Hassan Ubaid

We report on progress in the development of subsystem-level devices which serve as building blocks for the next generation of portable atomic clocks. Specifically, we discuss the engineering of small, low-power, low-temperature strontium vapour dispensers and a compact optical resonator useful for the stabilisation of multiple lasers.

10.1109/fcs.2018.8597579

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