We present a multiwavelength phase imaging method for terahertz (THz) reflective focal-plane imaging. The phase of the THz pulse at each pixel is linearly fitted within the effective frequency range to reconstruct the ranging profile of the object. The results show that the multiwavelength method significantly improves the ranging resolution and imaging quality in THz reflective imaging applications.
© 2009 Optical Society of America
Original Manuscript: November 18, 2008
Revised Manuscript: February 27, 2009
Manuscript Accepted: March 11, 2009
Published: April 14, 2009
Liangliang Zhang, Hua Zhong, Yan Zhang, Nick Karpowicz, Cunlin Zhang, Yuejin Zhao, and Xi-Cheng Zhang, "Terahertz wave focal-plane multiwavelength phase imaging," J. Opt. Soc. Am. A 26, 1187-1190 (2009)