High-Speed Optical Coherence Tomography System Using a 200-kHz Swept Light Source with a KTN Deflector


We demonstrate a high-speed swept-source optical coherence tomography (SS-OCT) system, which is based on a high-speed swept light source and a Mach-Zehnder interferometer with a high-speed photodetector. The light source is an external-cavity laser tuned by a KTN electro-optic deflector, which exhibits a very fast response and large deflection. The scanning wavelength range is almost 80 nm up to 200 kHz with a ±400-V deflector driving voltage. The system acquires 1 mm × 1 mm images consisting of 200 × 200 pixels within few milliseconds. We present preliminary SS-OCT images of an in-vitro human nail and an in-vivo finger pad.

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Y. Okabe, Y. Sasaki, M. Ueno, T. Sakamoto, S. Toyoda, J. Kobayashi and M. Ohmi, "High-Speed Optical Coherence Tomography System Using a 200-kHz Swept Light Source with a KTN Deflector," Optics and Photonics Journal, Vol. 3 No. 2, 2013, pp. 190-193. doi: 10.4236/opj.2013.32031.

Conflicts of Interest

The authors declare no conflicts of interest.


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