Axial resolution and depth range of high-resolution spectral domain optical coherence tomography at 1.3 µm

Sang-Won Lee; Hyun-Woo Jeong; Yeh-Chan Ahn; Woonggyu Jung; Zhongping Chen; Beop-Min Kim

doi:10.1117/12.809939

24 February 2009 Axial resolution and depth range of high-resolution spectral domain optical coherence tomography at 1.3 μm

Sang-Won Lee, Hyun-Woo Jeong, Yeh-Chan Ahn, Woonggyu Jung, Zhongping Chen, Beop-Min Kim

Author Affiliations +

Proceedings Volume 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII; 71682L (2009) https://doi.org/10.1117/12.809939
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

We built a high-speed, real-time spectral domain optical coherence tomography (SD-OCT) system at the 1.3 μm region using an InGaAs line-scan camera with 1024 pixels and 46.99 klines/s. In SD-OCT, the actual spatial resolution can be different from the theoretical one due to the large bandwidth of the light source and the finite number of detector pixels, especially for a long center wavelength. We calculated and compared the axial resolutions obtained from the point spread function and the physical pixel size of the OCT image. We found that the axial resolution of the SD-OCT system could be limited in the 1.3 μm region if the depth range becomes large.

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Sang-Won Lee, Hyun-Woo Jeong, Yeh-Chan Ahn, Woonggyu Jung, Zhongping Chen, and Beop-Min Kim "Axial resolution and depth range of high-resolution spectral domain optical coherence tomography at 1.3 μm", Proc. SPIE 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII, 71682L (24 February 2009); https://doi.org/10.1117/12.809939

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