
Proceedings Paper
Digital holography system for topography measurementFormat | Member Price | Non-Member Price |
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Paper Abstract
The optical characteristics of Diffractive Optical Elements are determined by the properties of the photosensitive
film on which they are produced. When working with photoresist plates, the most important property is the
change in the plate's topography for different exposures. In this case, the required characterization involves a
topographic measurement that can be made using digital holography. This work presents a digital holography
system in which a hologram's phase map is obtained from a single recorded image. The phase map is calculated
by applying a phase-shifting algorithm to a set of images that are created using a digital phase-shifting/tilteliminating
procedure. Also, the curvatures, introduced by the imaging elements used in the experimental setup,
are digitally compensated for using a polynomial fitting-method. The object's topography is then obtained from
this modified phase map. To demonstrate the proposed procedure, the topography of patches exposed on a
Shipley 1818 photoresist plate by microlithography equipment-which is currently under construction-is shown.
Paper Details
Date Published: 2 November 2011
PDF: 6 pages
Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80117T (2 November 2011); doi: 10.1117/12.903311
Published in SPIE Proceedings Vol. 8011:
22nd Congress of the International Commission for Optics: Light for the Development of the World
Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Rufino Díaz-Uribe; Rufino Díaz-Uribe; Rufino Díaz-Uribe, Editor(s)
PDF: 6 pages
Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80117T (2 November 2011); doi: 10.1117/12.903311
Show Author Affiliations
R. Amezquita, Univ. Nacional de Colombia Sede Bogotá (Colombia)
Combustion Ingenieros LTDA (Colombia)
O. J. Rincon, Combustion Ingenieros LTDA (Colombia)
Combustion Ingenieros LTDA (Colombia)
O. J. Rincon, Combustion Ingenieros LTDA (Colombia)
Y. M. Torres, Combustion Ingenieros LTDA (Colombia)
S. Amezquita, Univ. Nacional de Colombia Sede Bogotá (Colombia)
Combustion Ingenieros LTDA (Colombia)
S. Amezquita, Univ. Nacional de Colombia Sede Bogotá (Colombia)
Combustion Ingenieros LTDA (Colombia)
Published in SPIE Proceedings Vol. 8011:
22nd Congress of the International Commission for Optics: Light for the Development of the World
Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Rufino Díaz-Uribe; Rufino Díaz-Uribe; Rufino Díaz-Uribe, Editor(s)
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