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Dual-wavelength slightly off-axis digital holographic microscopy |
Applied Optics, Vol. 51, Issue 2, pp. 191-196 (2012)
http://dx.doi.org/10.1364/AO.51.000191
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Abstract
We propose dual-wavelength digital holographic microscopy with a slightly off-axis configuration. The axial measurement range without phase ambiguity is extended to the micrometer range by synthesizing a beat wavelength between the two wavelengths with separation of 157 nm. Real-time measurement of the specimen is made possible by virtue of the high wavelength selectivity of the Bayer mosaic filtered color CCD camera. The principle of the method is exposed, and the practicability of the proposed configuration is demonstrated by the experimental results on a vortex phase plate and a rectangular phase step.
© 2012 Optical Society of America
OCIS Codes
(120.2880) Instrumentation, measurement, and metrology : Holographic interferometry
(180.3170) Microscopy : Interference microscopy
(090.1705) Holography : Color holography
(090.5694) Holography : Real-time holography
ToC Category:
Microscopy
History
Original Manuscript: July 11, 2011
Revised Manuscript: September 21, 2011
Manuscript Accepted: September 22, 2011
Published: January 10, 2012
Virtual Issues
Vol. 7, Iss. 3 Virtual Journal for Biomedical Optics
Citation
Junwei Min, Baoli Yao, Peng Gao, Rongli Guo, Baiheng Ma, Juanjuan Zheng, Ming Lei, Shaohui Yan, Dan Dan, Tao Duan, Yanlong Yang, and Tong Ye, "Dual-wavelength slightly off-axis digital holographic microscopy," Appl. Opt. 51, 191-196 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-51-2-191
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