DOI: 10.3390/photonics10080934 ISSN:

A 1083 nm Narrow-Linewidth DFB Semiconductor Laser for Quantum Magnetometry

Mengying Wu, Haiyang Yu, Wenyu Wang, Shaojie Li, Yulian Cao, Jianguo Liu
  • Radiology, Nuclear Medicine and imaging
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

A 1083 nm laser, corresponding to a characteristic spectral line of 3He 23S1-23P, is the core light source for spin-exchange optical pumping-free technology, and thus has important developmental significance. In this paper, precise wavelength 1083.34 nm semiconductor lasers with 285 mW output power, −144.73 dBc/Hz RIN noise and 30.9952 kHz linewidth have been successfully achieved via reasonable chips design, high-quality epitaxial growth process and ultra-low reflectivity coating fabrication. All the results show the highest output power and ultra-narrow linewidth of the single-frequency 1083 nm DFB semiconductor laser achieved in this paper, which can fully satisfy the requirement of quantum magnetometers.

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