Ultrahigh scanning speed optical coherence tomography using optical frequency comb generators

A novel optical coherence tomography system without any moving part.,, for depth scanning was proposed and demonstrated. It was accomplished using two optical frequency comb generators, as broad-band spectrum generators, instead of moving part,, for depth scanning. A high scanning speed of more than 12,5 km/s and also a high repetition rate of 500 kHz were achieved in a long scan range of 25 mm. The resolution was about 100 mum.