Rapid scanning all-reflective optical delay line for real-time optical coherence tomography
- 1 January 2004
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 29 (1), 80-82
- https://doi.org/10.1364/ol.29.000080
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.
Keywords
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