Wavefront sensor with Fresnel zone plates for use in an undergraduate laboratory

Autor:	Łukasz Mazurek, Czesław Radzewicz, Piotr Migdał, Piotr Fita
Rok vydání:	2008
Předmět:	Wavefront Physics Optics Fresnel zone business.industry Measure (physics) General Physics and Astronomy Wavefront sensor Sensitivity (control systems) business Adaptive optics Deformable mirror Lens array
Zdroj:	American Journal of Physics. 76:229-235
ISSN:	1943-2909 0002-9505
Popis:	We propose a modification of the Shack–Hartmann wavefront sensor in which the lens array is made of Fresnel zone plates. The modification allows students to construct the sensor in an undergraduate laboratory at little cost. In spite of its simplicity the sensor has a sensitivity of λ∕50 in relative measurements, which is sufficient to measure a wavefront of a laser beam distorted by various optical elements as well as by a turbulent airflow. Such an experiment is an excellent supplement to a course in optics, gives students a deeper understanding of the wavefront concept, and demonstrates the wavefront measurement technique widely used in physics, astronomy, and medicine.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2f389320a7a2baeb165d21a6998ee978 https://doi.org/10.1119/1.2820390 Zobrazit plný text záznamu