“…Moreover, the front design of the system is based on collimation optics, which does not facilitate the simultaneous detection of ±1 order light (see Section 2.3 for a detailed analysis). Furthermore, Beliaeva et al analyzed the feasibility of highly efficient tunable light source using a similar principle [ 22 ]. In conclusion, the previous AOTF system designs exhibit limitations in spectral imaging applications, including inconsistent spectral response, compressed real aperture angle, transmission stray light interference, and complex structure.…”