Frequency-stabilized Faraday laser with 10⁻¹⁴ short-term instability for atomic clocks

In this Letter, stabilizing a Faraday laser frequency to the atomic transition is proposed and experimentally demonstrated, where can work at single- or dual-frequency modes. High-resolution spectroscopy of cesium atom induced by obtained. By with spectroscopy, fluctuations are suppressed without need high-cost Pound–Drever–Hall system. The fractional Allan deviation residual error signal 3 × 10−14/τ single-frequency mode. While mode, linewidth beat-note spectra between two modes after locking narrowed be 85 Hz, which an order magnitude better than free-running linewidth. It used for microwave clocks may have potential in application optical generation when performance further improved.