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Physics & Astronomy Colloquium

September 28, 2016 @ 3:45 pm - 5:00 pm


Speaker:  Andrew Lemmon    (ECE, University of Alabama)

Title: Atomic Clocks & Precision Timing: Applications and Opportunities

Atomic clocks are a critical part of the technology infrastructure which modern society depends on.  The role of precision timing in the proper operation of this infrastructure does not normally receive much press.  However, without atomic clocks and precise timing synchronization, many components of this infrastructure would not function reliably or at all.  For example, atomic clocks play an important role in establishing the reliability and consistency of telecommunications and IT networks, the electric power grid, Global Navigation and Satellite Systems (GNSS), and electronic financial transaction systems, among others.

This talk will provide an overview of the role which atomic clocks play in the support of modern technology infrastructure.  Specific example applications will be cited, along with the specific timing requirements of each.  In addition, a brief history of precise timing and atomic clock development will be presented, along with the current research trends and the anticipated needs for the next-generation of atomic clocks.  Finally, a more detailed treatment of the Active Hydrogen Maser (AHM) will be presented as an example of one important category of atomic clock which is in widespread use today.  This treatment will include a description of the modeling and simulation work currently underway at UA regarding the performance enhancement of one specific commercial AHM.

The colloquia will be preceded by light refreshments in GL227 from 3:30 – 3:45p.m.

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September 28, 2016
3:45 pm - 5:00 pm
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227 Gallalee Hall
514 University Blvd.
Tuscaloosa, AL 35401 United States
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