Precision angle sensor using an optical lever inside a Sagnac interferometer

Autor:	David S. Johnson, Mark A. Kasevich, Jason M. Hogan, Susannah Dickerson, Tim Kovachy, J. Hammer, Alex Sugarbaker, Sheng-wey Chiow
Rok vydání:	2011
Předmět:	Physics Sagnac effect Stray light business.industry Optical instrument FOS: Physical sciences Optical lever Noise floor Atomic and Molecular Physics and Optics Metrology law.invention Interferometry Optics law business Sensitivity (electronics) Physics - Optics Optics (physics.optics)
Zdroj:	Optics letters. 36(9)
ISSN:	1539-4794
Popis:	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^(1/2) 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 sub-picoradian / Hz^(1/2) sensitivities with an optimized design. Comment: 3 pages, 4 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b542cf7c15d02466eec82410b123ef9 https://pubmed.ncbi.nlm.nih.gov/21540973 Zobrazit plný text záznamu