Comparison of spatial self-filtering using numerical, photorefractive, and nonphotorefractive techniques

Ernst Ulrich Wagemann; Hans J. Tiziani

doi:10.1117/12.281169

17 September 1997 Comparison of spatial self-filtering using numerical, photorefractive, and nonphotorefractive techniques

Ernst Ulrich Wagemann, Hans J. Tiziani

Author Affiliations +

Proceedings Volume 3098, Optical Inspection and Micromeasurements II; (1997) https://doi.org/10.1117/12.281169
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

Abstract

In periodic structures the Fourier peaks have to be removed in order to enhance defects. This can be done by digital image processing or by optical means. Recently we presented some new developments in microscopic defect enhancement by spatial self-filtering using B₁₂SiO₂₀ (BSO) in the Fourier plane of an optical processor. In this paper we summarize spatial filtering using photorefractive, non- linear devices and equivalent numerical techniques. We sue BSO as photorefractive medium and two different optically addressed spatial light modulators as nonlinear devices.

Citation Download Citation

Ernst Ulrich Wagemann and Hans J. Tiziani "Comparison of spatial self-filtering using numerical, photorefractive, and nonphotorefractive techniques", Proc. SPIE 3098, Optical Inspection and Micromeasurements II, (17 September 1997); https://doi.org/10.1117/12.281169

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available