We report a compact, high-power, fiber-based source for ultrahigh-resolution optical coherence tomography (OCT) near 1 µm. The practical source is based on a short-pulse, ytterbium-doped fiber laser and on generation of a continuum spectrum in a photonic crystal fiber. The broadband emission has an average power of 140 mW and offers an axial resolution of 2.1 µm in air (<1.6 µm in biological tissue). The generation of a broad bandwidth is robust and efficient. We demonstrate ultrahigh-resolution, time-domain OCT imaging of in vitro and in vivo biological tissues.
© 2005 Optical Society of America
Hyungsik Lim, Yi Jiang, Yimin Wang, Yu-Chih Huang, Zhongping Chen, and Frank W. Wise, "Ultrahigh-resolution optical coherence tomography with a fiber laser source at 1 µm," Opt. Lett. 30, 1171-1173 (2005)