Fig. 1. Optical properties of multilayer film and Al film. (a) Reflectance; (b) phase difference between s light and p light

Fig. 2. Cassegrain telescope

Fig. 3. M_dia of telescopic system coated with different films. (a)--(c) Al film; (d)--(f) multilayer film

Fig. 4. M_ret of telescopic system coated with different films. (a)--(c) Al film; (d)--(f) multilayer film

Fig. 5. Structural diagram of dual-channel polarization lidar system

Fig. 6. Relationship between relative error and field of view when d=0.3

Fig. 7. Relationship between relative error and wavelength in telescopic system coated with different films. (a) Al film; (b) multilayer film

Fig. 8. Relative errors of atmospheric depolarization parameters in telescopic system coated with different films