2026-06-29T08:01:13Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/508102023-08-25T12:15:46Zcom_20.500.14352_14col_20.500.14352_15

Laser beam profiling with extended-image-range techniques Quiroga Mellado, Juan Antonio González Moreno, Ricardo Alonso Fernández, José Bernabeu Martínez, Eusebio 535 Optics Óptica (Física) 2209.19 Óptica Física © 2005 Society of Photo-Optical Instrumentation Engineers. This research was supported by the Comisión Interministerial de Ciencia y Technología under the projects DPI-2001/1369, DPI 2001/1238, and DPI2002-02104. A method to enlarge the dynamic range of a CCD-based laser beam profiler is presented. The method is based on extended-image-range techniques. The algorithm that generates the extended-irradiance-range image is described in detail. An equivalent dynamic range and number of bits are defined and computed for the new profiling system. To test the method, experimental measurements of the principal widths of the output beam from a single-mode optical fiber have been made, as well as the Fraunhofer diffraction pattern of a 200-μm m pinhole back-illuminated by a HeNe laser. Ministerio de Ciencia y Tecnología (MCYT) Depto. de Óptica Fac. de Ciencias Físicas TRUE pub 2023-06-20T10:37:28Z 2023-06-20T10:37:28Z 2005-02 journal article https://hdl.handle.net/20.500.14352/50810 0091-3286 10.1117/1.1840931 eng (DPI-2001/1369; DPI 2001/1238; DPI2002-02104) open access application/pdf Spie-Soc Photo-Optical Instrumentation Engineers