Optical coherence tomography in the 2-µm wavelength regime for paint and other high opacity materials.

Optics letters

PubMedID: 25490506

Cheung CS, Daniel JM, Tokurakawa M, Clarkson WA, Liang H. Optical coherence tomography in the 2-µm wavelength regime for paint and other high opacity materials. Opt Lett. 2014;39(22):6509-6512.
An optical coherence tomography system using a compact fiber source emitting amplified spontaneous emission at central wavelength of 1960 nm with bandwidth of 40 nm is developed to enhance the probing depth in a highly scattering material with low water content. Examples of application to paint are used to demonstrate significantly improved penetration depth in high opacity materials in the 2-µm wavelength regime.