Dual-wavelength Digital Holography Microscope for BGA Measurement Using Partial Coherence Sources
Journal of the Optical Society of Korea, Vol. 15, Issue 4, pp. 352-356 (2011)
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Abstract
Dual-wavelength holography has a better axial range than single-wavelength holography, allowing unambiguous phase imaging. Partial coherence sources reduce coherent noise, resulting in improved reconstructed images. We measured a ball-grid array using dual-wavelength holography with partial coherence sources. This holography method is useful for measurement samples that exhibit coherence noise and have a step height larger than the single wavelength used in holography.
© 2011 Optical Society of Korea
OCIS Codes
(090.0090) Holography : Holography
(090.4220) Holography : Multiplex holography
(090.1995) Holography : Digital holography
History
Original Manuscript: July 11, 2011
Revised Manuscript: September 27, 2011
Manuscript Accepted: September 27, 2011
Published: December 25, 2011
Citation
Hyung-Jun Cho, Doo-Cheol Kim, Young-Hun Yu, Won-Ki Jung, and Sang-Hoon Shin, "Dual-wavelength Digital Holography Microscope for BGA Measurement Using Partial Coherence Sources," J. Opt. Soc. Korea 15, 352-356 (2011)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-15-4-352
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