FDML swept source at 1060 nm using a tapered amplifier
S. Marschalla, T. Kleinb, W. Wieserb, B. Biedermannb, K. Hsuc, B. Sumpfd, K.-H. Haslerd, G. Erbertd, O.B. Jensena, Ch. Pedersena, R. Huberb, P.E. Andersena
Published in:
Proc. SPIE, vol. 7554, no. 75541H (2010).
Abstract:
We present a novel frequency-swept light source working at 1060 nm that utilizes a tapered amplifier as gain medium. These devices feature significantly higher saturation power than conventional semiconductor optical amplifiers and can thus improve the limited output power of swept sources in this wavelength range. We demonstrate that a tapered amplifier can be integrated into a fiber-based swept source and allows for high-speed FDML operation. The developed light source operates at a sweep rate of 116 kHz with an effective average output power in excess of 30 mW. With a total sweep range of 70 nm an axial resolution of 15 µm in air (~11 µm in tissue) for OCT applications can be achieved.
a DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Frederiksborgvej 399, 4000 Roskilde, Denmark
b Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität München, Oettingenstr. 67, 80538 München, Germany
c Micron Optics, Inc., 1852 Century Place NE, Atlanta, GA30345 USA
d Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Strasse 4, 12489 Berlin, Germany
Keywords:
optical coherence tomography, swept source, tunable laser, tapered amplifier, fourier domain mode-locking.
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