Journal
OPTICS LETTERS
Volume 31, Issue 24, Pages 3668-3670Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.31.003668
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We present a terahertz phase imaging method with multiwavelengths. This novel approach can image an object with a larger optical length compared with using the largest wavelength in the terahertz spectrum and does not involve the usual phase unwrapping in the detection of phase discontinuity. Furthermore, this technique can effectively reduce the noise background. We present two examples to demonstrate the validity of this new method. Both measurements show that multiwavelength phase imaging is a straightforward and efficient phase data processing method in terahertz imaging applications. (c) 2006 Optical Society of America.
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