The working principle of a depolarizer is mainly based on the decomposition and recombination of polarized light, which converts polarized light into unpolarized light. A quartz depolarizer consists of two quartz optical wedges. When linearly polarized light is incident on the wedge surface of a wedge‑type depolarizer, its polarization state undergoes spatial variation, generating random polarization. Wedge‑type depolarizers deliver excellent depolarization performance for both monochromatic and broadband light sources.