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Proceedings Paper

Polarized point diffraction interferometer for fringe stabilization
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Paper Abstract

We propose a new point diffraction interferometer using a polarizer with a pinholed for qualitative optical analysis. Diffraction from a polarizer with a pinholed makes reference and measurement waves. Interference fringe between diffracted-undiffracted measurement wave and undiffracted-diffracted reference wave is stabilized by common-path configuration. We examined the pinhole size and divergence angle of the diffracted wave for test optics with various numerical aperture. Optical parts comprising the interferometer can be assembled into a small monolithic component and embedded into an imaging target for easy alignment. Optical systems evaluating imaging performances such as modulation transfer function would benefit in aligning target objects.

Paper Details

Date Published: 2 August 2010
PDF: 6 pages
Proc. SPIE 7790, Interferometry XV: Techniques and Analysis, 779013 (2 August 2010); doi: 10.1117/12.859805
Show Author Affiliations
Hagyong Kihm, Korea Research Institute of Standards and Science (Korea, Republic of)
Yun-Woo Lee, Korea Research Institute of Standards and Science (Korea, Republic of)

Published in SPIE Proceedings Vol. 7790:
Interferometry XV: Techniques and Analysis
Catherine E. Towers; Joanna Schmit; Katherine Creath, Editor(s)

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