Precision angle sensor using an optical lever inside a Sagnac interferometer

J. M. Hogan; J. Hammer; S. W. Chiow; S. Dickerson; D. M.S. Johnson; Timothy Light Kovachy; A. Sugarbaker; M. A. Kasevich

doi:10.1364/OL.36.001698

Precision angle sensor using an optical lever inside a Sagnac interferometer

J. M. Hogan, J. Hammer, S. W. Chiow, S. Dickerson, D. M.S. Johnson, Timothy Light Kovachy, A. Sugarbaker, M. A. Kasevich

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

We built an ultra-low-noise angle sensor by combining a folded optical lever and a Sagnac interferometer. The instrument has a measured noise floor of 1:3 prad/√Hz at 2:4 kHz. We achieve this record angle sensitivity using a proof-of-concept apparatus with a conservative N = 11 bounces in the optical lever. This technique could be extended to reach subpicoradian//√Hz sensitivities with an optimized design.

Original language	English (US)
Pages (from-to)	1698-1700
Number of pages	3
Journal	Optics Letters
Volume	36
Issue number	9
DOIs	https://doi.org/10.1364/OL.36.001698
State	Published - May 1 2011

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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AU - Hammer, J.

AU - Chiow, S. W.

AU - Dickerson, S.

AU - Johnson, D. M.S.

AU - Kovachy, Timothy Light

AU - Sugarbaker, A.

AU - Kasevich, M. A.

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Precision angle sensor using an optical lever inside a Sagnac interferometer

Abstract

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