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Low-Power chip-scale Rubidium plasma light source for miniature atomic clocks

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6 Author(s)
Venkatraman, V. ; Microsyst. for Space Technol. Lab., Ecole Polytech. Fed. de Lausanne (EPFL), Neuchatel, Switzerland ; Shea, H. ; Petremand, Y. ; de Rooij, N.
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We present the development, testing and characterization of a low-power chip-scale Rubidium (Rb) plasma light source designed to serve for optical pumping in miniature atomic clocks. The technique used is electrodeless capacitively coupled plasma (CCP) discharge, driven in a micro-fabricated Rb vapor cell. The device is electrically driven at frequencies between 1 and 36 MHz to emit 140 μW of stable optical power while coupling <; 6 mW of electrical power to the discharge cell. To our knowledge this is the first reported Rb plasma emitted from a chip-scale device.

Published in:

Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International

Date of Conference:

2-5 May 2011