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. 2020 Jul 20;9:124. doi: 10.1038/s41377-020-00365-w

Fig. 3. Beam characterization.

Fig. 3

a Beam profiles (FWHM) obtained from the 3D printed OCT probe with the catheter, indicating negligible astigmatism (coordinates shown in Fig. 1). The x axis is the distance to the catheter surface. b Focal spot profile. c Spot profile from a plane ~1.15 mm from where the light exits the catheter surface