Fig. 1. Experimental setup of PT-OCT

Fig. 2. Experimental results of imaging phantom. (a) Raw tomogram of OCT; (b) tomogram of PT-OCT obtained by phase difference algorithm; (c) tomogram of PT-OCT obtained by average amplitude algorithm; (d)-(f) gray-level curves corresponding to dashed lines in Fig. 2(a)-(c)

Fig. 3. Experimental results of imaging mouse ear. (a) Three-dimensional image of OCT; (b) three-dimensional top view of OCT; (c) three-dimensional top view of PT-OCT obtained by phase difference algorithm; (d) three-dimensional top view of PT-OCT obtained by average amplitude algorithm

Fig. 4. Tomograms of mouse ear. (a) Raw tomogram of OCT; (b) tomogram of PT-OCT obtained by phase difference algorithm; (c) tomogram of PT-OCT obtained by average amplitude algorithm; (d)-(f) average values of gray values corresponding to same position in middle of Fig. 4(a)-(c)

Fig. 5. Photograph of actual sample using in experiment

Fig. 6. PT-OCT images of tumor site. (a) Three-dimensional image of PT-OCT; (b) top view of PT-OCT; (c) side view of PT-OCT marked with pseudo-color photothermal signal; (d) three-dimensional image of PT-OCT marked with pseudo-color photothermal signal

Fig. 7. Specific-depth images of tumor site. (a) Top view of PT-OCT of tumor site; (b)-(i) sectional views at 0.5, 1, 1.5, 2, 2.5, 3, 3.5, and 4 mm from top surface of tumor, respectively