Phys. Rev. Lett. 76, 4500–4503 (1996)Laser Spectroscopy of Atoms Guided by Evanescent Waves in Micron-Sized Hollow Optical FibersReceived 26 January 1996; revised 10 April 1996; published in the issue dated 10 June 1996 We report the first laser spectroscopic experiments on the Rb beam guided by blue-detuned evanescent waves in micron-sized hollow fibers. The two-step photoionization spectra show the long-range dispersive properties of dipole interaction between guided atoms and evanescent waves. A large enhancement factor of 20 in in the transmitted atomic flux is obtained at optimal conditions and the total guidance efficiency is estimated to be above 40%. The state- and species-selective guide with proper frequency detunings of the guide laser realizes in-line spatial separation of two stable Rb isotopes. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.76.4500
DOI:
10.1103/PhysRevLett.76.4500
PACS:
32.80.Lg, 32.80.Pj, 39.10.+j, 39.30.+w
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