The SS-OCT system was constructed using a swept laser source and a compact Michelson interferometer. Theoutputs of sweep source include laser signal and k-trigger signal. The laser signal realizes spectral interference and thek-trigger signal realizes acquisition interferometer signal with uniformly wavenumber interval. However, there are twoproblems. The first one is that the output wavenumber of the source changes non-linear with time. To solve thisproblem, a wavenumber phase equalization algorithm is proposed. The second problem is that the unfixed delaybetween the spectral calibration signal k-trigger and the OCT signal, which makes the result of spectral calibrationincorrectly. Aiming at the asynchronization between the acquire OCT signal and the k-trigger signal, an algorithm ofk-clock delay correction based on cross correlation is adopted to correct the delay. The SS-OCT system could be usedfor accurate measurement the curvature of the laser focusing lens due to its excellent advantages such asnon-destructive, high resolution and high inspection speed. The 2D tomography maps of a laser focusing lens aremeasured by this system and real-time images are obtained.
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