Laser system for high accuracy alignment and positioning

Autor:	V. Vasiliu, L. Bursanescu
Rok vydání:	1994
Předmět:	Physics Signal processing Analogue electronics business.industry Detector Photometer Laser law.invention Optics Band-pass filter law Laser beam quality Electric current business Instrumentation
Zdroj:	Review of Scientific Instruments. 65:1686-1690
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1144860
Popis:	A laser system for high accuracy positioning, either on‐axis or off‐axis, over distances up to 50 m along the beam path is described. A beam delivery system with four degrees of freedom is used for initial alignment to an accuracy of 1 μm. Proper processing of the signals from a semiconductor quadrant detector reduces the measurement uncertainties and provides real‐time response. Theoretical consideration of the beam propagation characteristics is included. Laboratory and field test results show the system gives uncertainties of less than 1% for off‐axis positions up to 1 mm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c52bc5936cd199a990f0cab3c15afacd https://doi.org/10.1063/1.1144860 Zobrazit plný text záznamu