Abstract
We describe a dispersion-free high-speed scanning optical delay line that is suitable for real-time optical coherence tomography, in particular, when an ultrabroadband light source is used. The delay line is based on all-reflective optics consisting of two flat and one curved mirrors. We achieve optical path-length scanning by oscillating one of the two flat mirrors with a resonant galvanometer. The delay line is compact and easy to implement. A total scanning depth of 1.50 mm with an 89% duty ratio, a maximal scanning speed of , and a 4.1-kHz repetition rate has been demonstrated.
© 2004 Optical Society of America
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Xiumei Liu, Michael J. Cobb, and Xingde Li, "Rapid scanning all-reflective optical delay line for real-time optical coherence tomography: erratum," Opt. Lett. 30, 1744-1744 (2005)https://opg.optica.org/ol/abstract.cfm?uri=ol-30-13-1744
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