Ultrahigh enhancement in absolute and relative rotation sensing using fast and slow light

Autor:	M. S. Shahriar, Renu Tripathi, G. S. Pati, K. Salit, M. Messall, V. Gopal
Rok vydání:	2007
Předmět:	Physics business.industry Gyroscope Slow light Rotation Electromagnetic radiation Atomic and Molecular Physics and Optics law.invention Interferometry Resonator Laser linewidth Optics law Dispersion (optics) business
Zdroj:	Physical Review A. 75
ISSN:	1094-1622 1050-2947
DOI:	10.1103/physreva.75.053807
Popis:	We describe a resonator-based optical gyroscope whose sensitivity for measuring absolute rotation is enhanced via use of the anomalous dispersion characteristic of superluminal light propagation. The enhancement is given by the inverse of the group index, saturating to a bound determined by the group velocity dispersion. We also show how the offsetting effect of the concomitant broadening of the resonator linewidth may be circumvented by using an active cavity. For realistic conditions, the enhancement factor is as high as ${10}^{6}$. We also show how normal dispersion used for slow light can enhance relative rotation sensing in a specially designed Sagnac interferometer, with the enhancement given by the slowing factor.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eb749d14fd39d80dff54ff9345f65c82 https://doi.org/10.1103/physreva.75.053807 Zobrazit plný text záznamu