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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 2 — Jan. 18, 2010
  • pp: 1177–1190

Frequency-wavelet domain deconvolution for terahertz reflection imaging and spectroscopy

Yang Chen, Shengyang Huang, and Emma Pickwell-MacPherson  »View Author Affiliations


Optics Express, Vol. 18, Issue 2, pp. 1177-1190 (2010)
http://dx.doi.org/10.1364/OE.18.001177


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Abstract

In terahertz reflection imaging, a deconvolution process is often employed to extract the impulse function of the sample of interest. A band-pass filter such as a double Gaussian filter is typically incorporated into the inverse filtering to suppress the noise, but this can result in over-smoothing due to the loss of useful information. In this paper, with a view to improving the calculation of terahertz impulse response functions for systems with a low signal to noise ratio, we propose a hybrid Frequency-Wavelet Domain Deconvolution (FWDD) for terahertz reflection imaging. Our approach works well; it retrieves more accurate impulse response functions than existing approaches and these impulse functions can then also be used to better extract the terahertz spectroscopic properties of the sample.

© 2010 OSA

OCIS Codes
(000.1430) General : Biology and medicine
(120.4825) Instrumentation, measurement, and metrology : Optical time domain reflectometry
(300.6495) Spectroscopy : Spectroscopy, teraherz
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

History
Original Manuscript: November 16, 2009
Revised Manuscript: December 23, 2009
Manuscript Accepted: January 4, 2010
Published: January 8, 2010

Citation
Yang Chen, Shengyang Huang, and Emma Pickwell-MacPherson, "Frequency-wavelet domain deconvolution for terahertz reflection imaging and spectroscopy," Opt. Express 18, 1177-1190 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-2-1177


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