Demonstration of a tunable-bandwidth white-light interferometer using anomalous dispersion in atomic vapor

G. S. Pati*, M. Salit, K. Salit, M. S. Shahriar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

153 Scopus citations

Abstract

Recently, the design of a white-light cavity has been proposed using negative dispersion in an intracavity medium to make the cavity resonate over a large range of frequencies and still maintain a high cavity buildup. This Letter presents the first demonstration of this effect in a free-space cavity. The negative dispersion of the intracavity medium is caused by bifrequency Raman gain in an atomic vapor cell. A significantly broad cavity response over a bandwidth greater than 20 MHz has been observed. A key application of this device would be in enhancing the sensitivity-bandwidth product of the next generation gravitational wave detectors that make use of the so-called signal-recycling mirror.

Original languageEnglish (US)
Article number133601
JournalPhysical review letters
Volume99
Issue number13
DOIs
StatePublished - Sep 27 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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