Ultrahigh-resolution optical coherence tomography using continuum generation in an air-silica microstructure optical fiber

We,demonstrate ultrahigh-resolution optical coherence tomography (OCT) using continuum generation in an air-silica microstructure fiber as a low-coherence light source. A broadband OCT system was developed and imaging was performed with a bandwidth of 370 nm at a 1.3-mum center wavelength. Longitudinal resolutions of 2.5 mum in air and similar to2 mum in tissue were achieved. Ultrahigh-resolution imaging in biological tissue in vivo was demonstrated. (C) 2001 Optical Society of America.