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Proceedings Paper

Demonstration of interferometer sensitivity varying as the inverse of the group index
Author(s): M. S. Shahriar; G. S. Pati; M. Messal
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Paper Abstract

We have shown experimentally that dispersion due to an intra-cavity electromagnetically induced transparency or gain medium reduces the sensitivity of the cavity resonance frequency to a change in its length by a factor which is inversely proportional to the group index. Since the group index under atomic coherence can be made extremely large, the sensitivity of a long path length optical cavity can be reduced significantly. This can help in constructing highly frequency-stable cavities for various potential applications without taking additional measures for mechanical stability. The results also establish indirectly the opposite effect of increased sensitivity that can be realized for a negative dispersion corresponding to a group index close to a null value. These effects are discussed in the context of potential sensitivity enhancement of a rotation sensor.

Paper Details

Date Published: 8 February 2007
PDF: 9 pages
Proc. SPIE 6482, Advanced Optical and Quantum Memories and Computing IV, 64820L (8 February 2007);
Show Author Affiliations
M. S. Shahriar, Northwestern Univ. (United States)
G. S. Pati, Northwestern Univ. (United States)
M. Messal, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 6482:
Advanced Optical and Quantum Memories and Computing IV
Zameer U. Hasan; Alan E. Craig; Selim M. Shahriar; Hans J. Coufal, Editor(s)

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