Thermal Noise in Fabry-Perot Cavities

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• Steven Johnson, Midlands Ultra cold Atoms Research Centre
• Friday 20 November 2009, 13:00-14:00
• Theory Library.

If you have a question about this talk, please contact Andrew Berridge.

Current Optical Frequency Atomic Clocks are limited by the linewidth of the laser probing the ‘clock’ transition. To enable the laser to be narrowed a very low expansion Fabry-Perot cavity is used to lock the laser to. The current limitation of this cavity is the thermal noise from the mirrors, in the form of Brownian thermal noise and thermoelastic noise. These noise sources can be calculated analytically and numerically, the choice of materials other ways to lower this noise will be discussed.

This talk is part of the Theoretical Physics Journal Club and Group Meeting series.

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• Theoretical Physics Journal Club and Group Meeting
• Theory Library

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