Ultrahigh-Resolution Optical Coherence Tomography in 1.7 mu m Region with Fiber Laser Supercontinuum in Low-Water-Absorption Samples

作者：Ishida Shutaro^*; Nishizawa Norihiko; Ohta Takefumi; Itoh Kazuyoshi

来源：Applied Physics Express, 2011, 4(5): 052501.

DOI：10.1143/APEX.4.052501

Ultrahigh-resolution, high-penetration-depth optical coherence tomography (OCT) by use of an all-fiber supercontinuum source at 1.7 mu m was demonstrated. A Gaussian-like supercontinuum with 358 nm bandwidth at a center wavelength of 1.7 mu m was generated by an ultrashort-pulse Er-doped fiber laser system. A longitudinal resolution of 3.3 mu m in tissue, with a sensitivity of 95 dB, was achieved. In vitro ultrahigh-resolution imaging of biological tissues was also demonstrated. To the best of our knowledge, this is the first demonstration of ultrahigh-resolution OCT in the 1.7 mu m-wavelength region.

• 出版日期2011-5