Instrumentation, Techniques, and Measurement

Substructured Ronchi gratings from the linear combination of classical gratings

[+] Author Affiliations
Daniel Aguirre-Aguirre

Instituto Nacional de Astrofísica, Óptica y Electrónica, Departamento de Óptica, INAOE, Apdo. Postal 51 and 216, C. P. 72000, Puebla, México

Brenda Villalobos-Mendoza

Instituto Nacional de Astrofísica, Óptica y Electrónica, Departamento de Óptica, INAOE, Apdo. Postal 51 and 216, C. P. 72000, Puebla, México

Fermín S. Granados-Agustín

Instituto Nacional de Astrofísica, Óptica y Electrónica, Departamento de Óptica, INAOE, Apdo. Postal 51 and 216, C. P. 72000, Puebla, México

Rafael Izazaga-Pérez

Instituto Nacional de Astrofísica, Óptica y Electrónica, Departamento de Óptica, INAOE, Apdo. Postal 51 and 216, C. P. 72000, Puebla, México

Manuel Campos-García

Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Apdo. Postal 70-186, 04510 D. F. México, México

María Elizabeth Percino-Zacarías

Instituto Nacional de Astrofísica, Óptica y Electrónica, Departamento de Óptica, INAOE, Apdo. Postal 51 and 216, C. P. 72000, Puebla, México

Alejandro Cornejo-Rodríguez

Instituto Nacional de Astrofísica, Óptica y Electrónica, Departamento de Óptica, INAOE, Apdo. Postal 51 and 216, C. P. 72000, Puebla, México

Opt. Eng. 53(11), 114111 (Nov 21, 2014). doi:10.1117/1.OE.53.11.114111
History: Received July 13, 2014; Accepted October 24, 2014
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Abstract.  Substructured Ronchi gratings are used to sharpen and increase the number of fringes in Ronchigrams, thereby increasing their spatial resolution and allowing greater accuracy in the evaluation of a surface under test. This work presents a simple method for generating substructured Ronchi gratings and for calculating the intensity pattern produced by this type of grating. For this, we propose the generation of this kind of grating from the linear combination of classical gratings; the pattern of irradiance produced by these Ronchi gratings will be a linear combination of the intensity patterns produced by each combined classical grating. A comparison between theoretical and experimental Ronchigrams was obtained by analyzing a parabolic mirror.

Figures in this Article
© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Daniel Aguirre-Aguirre ; Brenda Villalobos-Mendoza ; Fermín S. Granados-Agustín ; Rafael Izazaga-Pérez ; Manuel Campos-García, et al.
"Substructured Ronchi gratings from the linear combination of classical gratings", Opt. Eng. 53(11), 114111 (Nov 21, 2014). ; http://dx.doi.org/10.1117/1.OE.53.11.114111


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