Ultra-narrow linewidth laser
- Details
- Published on 10 February 2025

The SLIM LINER is a single-frequency, ultra-narrow linewidth laser, based on a Self-Adaptive Photonic Oscillator (SAPO) technology developed by the Institut Foton at Université de Rennes in France.
A pump laser is optically locked onto a cavity using stimulated Brillouin scattering that offers an extremely narrow gain bandwidth, naturally favoring a high spectral purity without mode-hops. The frequency noise is better than 0.0005 Hz2/Hz at 200kHz offset frequency and limited by the measurement !