Demonstration of interferometer sensitivity varying as the inverse of the group index

M. S. Shahriar; G. S. Pati; M. Messal

doi:10.1117/12.716399

8 February 2007 Demonstration of interferometer sensitivity varying as the inverse of the group index

M. S. Shahriar, G. S. Pati, M. Messal

Author Affiliations +

Proceedings Volume 6482, Advanced Optical and Quantum Memories and Computing IV; 64820L (2007) https://doi.org/10.1117/12.716399
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

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.

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M. S. Shahriar, G. S. Pati, and M. Messal "Demonstration of interferometer sensitivity varying as the inverse of the group index", Proc. SPIE 6482, Advanced Optical and Quantum Memories and Computing IV, 64820L (8 February 2007); https://doi.org/10.1117/12.716399

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