We investigate confocal enhanced optical coherence tomography as a nondestructive evaluation tool for imaging with improved image contrast and depth resolution through a highly scattering paint layer. The depth responses provided by confocal microscopy, optical coherence tomography, and confocal enhanced optical coherence tomography for imaging through paint are investigated. We demonstrate that a new combination of confocal microscopy and optical coherence tomography provides significantly improved resolution and contrast for coherence gated imaging of substrate structures under the paint.
© 1999 Optical Society of America
Faming Xu, Haridas E. Pudavar, Paras N. Prasad, and David Dickensheets, "Confocal enhanced optical coherence tomography for nondestructive evaluation of paints and coatings," Opt. Lett. 24, 1808-1810 (1999)