Anti-interference frequency stabilization algorithm with a large locking range based on compound differentiation

This is the authors' abstract. We don't add key points for this paper.

Stabilizing the frequency of free-running lasers is crucial for high-precision optical measurements. However, this process is susceptible to environmental interference and device power noise. In this study, we present a robust anti-interference algorithm based on compound differentiation. This algorithm effectively mitigates power noise from the light source, including noise arising from modulation and circuitry. The effectiveness of the algorithm is experimentally verified. Additionally, we introduce a frequency-deviation demodulation algorithm that leverages specific power-point combinations. The feasibility of this approach is supported by simulations. Furthermore, the algorithm is designed to be compatible with other frequency stabilization systems that do not require wavelength selectivity.