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Proceedings Paper

Improved rubidium frequency standards using diode lasers with AM and FM noise control
Author(s): Csaba Szekely; R. E. Drullinger
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Paper Abstract

Diode-laser-pumped, rubidium cell frequency standards have potential short-term stability that is vastly better than their lamp-pumped counterparts. However, AM and FM noise in monolithic laser diodes limit their performance. With extended-cavity, grating-feedback diode lasers, the AM and FM noise can be controlled. In the preliminary work reported here, we have used such a laser to make measurements in two different rubidium cell systems. Measured line Q and signal-to-noise ratios corresponding to (sigma) y((tau) ) equals 4 X 10-13 (tau) -1/2 in a commercial, buffer gas type standard and (sigma) y((tau) ) equals 2 X 10-13 (tau) -1/2 in an evacuated, wall-coated cell are demonstrated. We believe both of these numbers can be improved significantly in a fully engineered and optimized standard.

Paper Details

Date Published: 30 April 1993
PDF: 7 pages
Proc. SPIE 1837, Frequency-Stabilized Lasers and Their Applications, (30 April 1993); doi: 10.1117/12.143682
Show Author Affiliations
Csaba Szekely, National Institute of Standards and Technology (United States)
R. E. Drullinger, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 1837:
Frequency-Stabilized Lasers and Their Applications
Y. C. Chung, Editor(s)

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