Fig. 1. Schematic diagram of measuring light path for laser phase shift polarization interference tomography

Fig. 2. Schematic diagram of rotation of measuring area

Fig. 3. Physical diagram of experimental system. (a) Measuring optical path system; (b) temperature field calibration device

Fig. 4. Interference patterns at different rotation angles of polarizer. (a) -π/2; (b) -π/4; (c) 0; (d) π/4; (e) π/2

Fig. 5. Reduction slice diagram of three-dimensional temperature field

Fig. 6. Comparison of measurement results