Laser Threshold Magnetometry with a Second Active Medium for High-Sensitivity Magnetic-Field Detection

Lukas Lindner, Yves Rottstaedt, Florian Schall, Janina Schindler, Takeshi Ohshima, Alexander M. Zaitsev, Roman Bek, Marcel Rattunde, Rüdiger Quay, Jan Jeske

Published Jan 1, 2026• 0 citations

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Abstract

We present two-media NV-diamond laser threshold magnetometry using a VECSEL gain medium which compensates cavity losses, demonstrating a magnetic-fielddependent laser threshold, and deriving a shot-noise-limited sensitivity of 49pT/√Hz through an improved shot-noise sensitivity formula.

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