Observation of nonlinear optical interactions of ultralow levels of light in a tapered optical nanofiber embedded in a hot rubidium vapor

S. M. Spillane, G. S. Pati, K. Salit, M. Hall, Prem Kumar, R. G. Beausoleil, Selim M Shahriar

Research output: Contribution to journalArticlepeer-review

131 Scopus citations

Abstract

We report the observation of low-light level optical interactions in a tapered optical nanofiber (TNF) embedded in a hot rubidium vapor. The small optical mode area plays a significant role in the optical properties of the hot vapor Rb-TNF system, allowing nonlinear optical interactions with nW level powers even in the presence of transit-time dephasing rates much larger than the intrinsic linewidth. We demonstrate nonlinear absorption and V-type electromagnetically induced transparency with cw powers below 10 nW, comparable to the best results in any Rb-optical waveguide system. The good performance and flexibility of the Rb-TNF system makes it a very promising candidate for ultralow power resonant nonlinear optical applications.

Original languageEnglish (US)
Article number233602
JournalPhysical Review Letters
Volume100
Issue number23
DOIs
StatePublished - Jun 11 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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