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"Wavelength swept amplified spontaneous emission source for high speed retinal optical coherence tomography at 1060 nm" Christoph M. Eigenwillig, Thomas Klein, Wolfgang Wieser, Benjamin R. Biedermann and Robert HuberJournal of Biophotonics, 4, No. 7-8, p. 552-558 (2011) Abstract: The wavelength swept amplified spontaneous emission (ASE) source presented in this paper is an alternative approach to realize a light source for high speed swept source optical coherence tomography (OCT). ASE alternately passes a cascade of different optical gain elements and tunable optical bandpass filters. In this work we show for the first time a wavelength swept ASE source in the 1060 nm wavelength range, enabling high speed retinal OCT imaging. We demonstrate ultra-rapid retinal OCT at a line rate of 170 kHz, a record sweep rate at 1060 nm of 340 kHz with 70 nm full sweep width, enabling an axial resolution of 11 μm. Two different implementations of the source are characterized and compared to each other. The last gain element is either a semiconductor optical amplifier or an Ytterbium-doped fibre amplifier enabling high average output power of >40 mW. Various biophotonic imaging examples provide a wide range of quality benchmarks achievable with such sources. BMO authors (in alphabetic order): Benjamin Biedermann Christoph Eigenwillig Robert Huber Thomas Klein Wolfgang Wieser Assoziierte Projekte: Optical Coherent Ranging and Optical Coherence Tomography (OCT): Imaging and profilometry with rapidly frequency swept laser sources  WWW-Version |
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Letzte Änderung: 2016-09-14 13:34
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