Fig. 1. Schematic of emitting light state changing through the depolarizer

Fig. 2. Four common depolarizers. (a) LYOT depolarizer; (b) cornu depolarizer; (c) double wedge H-V depolarizer; (d) double Babinet depolarizer

Fig. 3. Optical path of the spectrometer

Fig. 4. Relationship between the polarization and crystal thickness or wedge angle for different wavelengths. (a) 290 nm; (b) 500 nm; (c) 750 nm

Fig. 5. Variation curves of polarization with crystal thicknesses for wedge angle of 2 degree

Fig. 6. Relationship between polarization and crystal thickness for different wavelengths

Fig. 7. Variations of polarization with wavelength when the spectral resolution is 1.4 nm. (a) When the angle between the vibration direction of the incident light and X-axis is 30°; (b) when the angle between the vibration direction of the incident light and X-axis is 45°

Fig. 8. Diffraction patterns at different crystal wedge angles