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Proceedings Paper

Absolute speckle interferometry with an angular-spectrum-tunable source
Author(s): Zhihui Duan; Dong Wei; Akinori Yamada; Yoko Miyamoto; Mitsuo Takeda
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Paper Abstract

Based on the fringe formation in the k-vector space, we proposed an angular spectrum scanning technique for absolute interferometry. Instead of sweeping the optical frequency over a wide range of spectrum, we tune the angular spectrum by changing the incident angle of a monochromatic plane wave with a spatial light modulator (SLM). In the experiment, we built an equivalent spatially incoherent "ring source" to realize the angular spectrum scanning, and applied an algorithm to compensate the offset fluctuation of the fringe intensity.

Paper Details

Date Published: 15 September 2006
PDF: 5 pages
Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 634118 (15 September 2006);
Show Author Affiliations
Zhihui Duan, The Univ. of Electro-Communications (Japan)
Dong Wei, The Univ. of Electro-Communications (Japan)
Akinori Yamada, The Univ. of Electro-Communications (Japan)
Yoko Miyamoto, The Univ. of Electro-Communications (Japan)
Mitsuo Takeda, The Univ. of Electro-Communications (Japan)

Published in SPIE Proceedings Vol. 6341:
Speckle06: Speckles, From Grains to Flowers
Pierre Slangen; Christine Cerruti, Editor(s)

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