Yukang Shu, Chao Zhao, Xiaoyu Du, Xiang He, Hang Zhao, Xiaofeng Shi, Jun Ma. Depth extension technique of spectral domain optical coherence tomography[J]. Infrared and Laser Engineering, 2024, 53(4): 20230720
- Infrared and Laser Engineering
- Vol. 53, Issue 4, 20230720 (2024)
Fig. 1. Schematic diagram of beam offset
Fig. 2. Schematic diagram of focal plane fusion
Fig. 3. Schematic of the SD-OCT system
Fig. 4. Full range SD-OCT image. (a) Zero delay set outside the sample; (b) Zero delay set inside the sample
Fig. 5. Removing conjugate mirror at different offset distances. （a） −0.8 mm; （b） 0.4 mm; （c） 0.8 mm
Fig. 6. Schemaic of image weighted superposition
Fig. 7. OCT scanning images of removing complex conjugate images by focusing the beam at different depths of the sample . （a） 0 mm; （b） 0.8 mm; （c） 1.6 mm; （d） Weighted superposition of beam focusing at different depth focal planes
Fig. 8. (a)-(b) Original images of colon tissue at different positions; (c)-(d) Colon tissue image after extended depth
Fig. 9. One-dimensional depth spectral data of colon tissue
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