Shot-Noise-Limited Laser Frequency Stabilization Using a High-Resolution Wavelength Meter

2025/06/25 by Gan, Mengde, Zhang, Haoyi, Xiaodong Tan +5
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Advanced Optical Sensing Technologies #FOS: Physical sciences #Laser Design and Applications #Optics (physics.optics)

paper · pdf · doi:10.48550/arxiv.2506.20894

openalex publication_date 2025/06/25 · openalex created_date 2025/10/15 · openalex updated_date 2026/07/28

Abstract

We present a compact laser frequency stabilization method by locking a 556 nm laser to a high-precision wavelength meter. Unlike traditional schemes that rely on optical cavities or atomic references, we stabilize the laser frequency via a closed-loop feedback system referenced to a wavelength meter. This configuration effectively suppresses long-term frequency drifts, achieving frequency stability to the wavelength meter's shot-noise-limited resolution. The system enables sub-hundred-kilohertz stability without complex optical components, making it suitable for compact or field-deployable applications. Our results demonstrate that, with proper feedback design, wavelength meter-based locking can offer a practical and scalable solution for precision optical experiments requiring long-term frequency stability.

Citations

• Observation of quantum-classical transition behavior of LGI in a dissipative quantum gas
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