Aperture area metrology using confocal laser beam scanning technique

Autor:	E. D. Thorvaldson, P J Manson, Maitreyee Roy, M. J. Ballico, E G Atkinson
Předmět:	Physics Laser scanning Aperture business.industry System of measurement Astrophysics::Instrumentation and Methods for Astrophysics Beam parameter product Metrology Optics Physics::Accelerator Physics Radiometry Light beam Laser beam quality business
Zdroj:	Scopus-Elsevier
Popis:	In precision optical radiometric and photometric measurements, one of the limiting factors is an accurate knowledge of the area of a beam limiting aperture. The world's most accurate radiometric measurements are currently realized with a relative standard uncertainty of order 10−4. To achieve this level of accuracy it is essential to measure apertures with the same relative standard uncertainty. We present a computer controlled absolute aperture-area measurement system based on a confocal laser beam scanning technique. In this system, a precision aperture is scanned utilizing a tightly focused beam and precision translation stages.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0e8ee103e9467d4a8ffec2f8c4ee513 http://www.scopus.com/inward/record.url?eid=2-s2.0-84893529436&partnerID=MN8TOARS Zobrazit plný text záznamu