Slow-light fourier transform interferometer |
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Authors: | Shi Zhimin Boyd Robert W Camacho Ryan M Vudyasetu Praveen K Howell John C |
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Institution: | The Institute of Optics, University of Rochester, Rochester, New York 14627 USA. zshi@optics.rochester.edu |
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Abstract: | We describe a new type of Fourier transform (FT) interferometer in which the tunable optical delay between the two arms is realized by using a continuously variable slow-light medium instead of a moving arm as in a conventional setup. The spectral resolution of such a FT interferometer exceeds that of a conventional setup of comparable size by a factor equal to the maximum group index of the slow-light medium. The scheme is experimentally demonstrated by using a rubidium atomic vapor cell as the tunable slow-light medium, and the spectral resolution is enhanced by a factor of approximately 100. |
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