Abstract

A novel, compact, user friendly fiber laser with a broad emission bandwidth (MenloSystems, λ<sub>c</sub>=1375nm, Δλ=470nm, <i>P</i><sub>out</sub>=4mW) was used to achieve unprecedented sub-2-μm axial resolution optical coherence tomography (OCT) in nontransparent biological tissue in the 1300-nm wavelength region. Fresh human skin and arterial biopsies were imaged <i>ex vivo</i> with ~1.4-μm axial and ~3-μm lateral resolution and 95-dB sensitivity, demonstrating the great potential for clinical OCT applications of this stable, low-cost, and turn-on-key fiber laser.

© 2003 Optical Society of America

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