Fig. 1. Schematic illustrating relationship between physical quantity q and wave number

Fig. 2. Schematic of SDOCT imaging system

Fig. 3. Results of Doppler shift. (a) Two-dimensional spectrum; (b) structural diagram of imaged plane mirror; (c) component map of Doppler shift

Fig. 4. Structural diagram of imaged plane mirror

Fig. 5. Comparison chart of PSF. (a) After calibration via Doppler shift method; (b) after calibration via traditional method

Fig. 6. Imaging results of esophageal tract. (a) Traditional histological staining microscopy; (b) three-dimensional image of esophageal tract obtained by proposed system; (c) image calibrated by traditional method; (d) image calibrated by proposed Doppler shift method