Compact portable 795nm DFB diode laser system for atom interferometer

Yuan Zhao; Jun Gao; Jie Guo; Yuan Yao; Hongwei Song

doi:10.1117/12.2585442

4 December 2020 Compact portable 795nm DFB diode laser system for atom interferometer

Yuan Zhao, Jun Gao, Jie Guo, Yuan Yao, Hongwei Song

Proceedings Volume 11617, International Conference on Optoelectronic and Microelectronic Technology and Application; 116173A (2020) https://doi.org/10.1117/12.2585442
Event: International Conference on Optoelectronic and Microelectronic Technology and Application, 2020, Nanjing, China

Abstract

Here, we demonstrate a homemade compact portable 795nm DFB laser system for atom interferometer. The whole laser system including the control unit is integrated in a module with a dimension of 345 mm×275 mm×70 mm . The laser frequency is respect to ⁸⁷Rb D₁ line F=2→F’=2 transition by modulation transfer spectroscopy (MTS) technique. The short-term linewidth is less than 700kHz@1.68ms, and the short-term stability of frequency is less than 157.4 kHz@1.5min (standard deviation). The output power after a single mode polarization maintaining fiber is about 30 mW, and the laser power instability is better than 0.23%@11 h (RMS) and 2.4%@11 h (peak-to-peak value). The polarization extinction ratio (PER) for output fiber is specified to be greater than 25.9 dB, and the mode-hop-free tuning range is greater than15 GHz. The compact laser system has been applied in the state selection process of our atom interferometer and achieves about 90% state preparation efficiency.

Citation Download Citation

Yuan Zhao, Jun Gao, Jie Guo, Yuan Yao, and Hongwei Song "Compact portable 795nm DFB diode laser system for atom interferometer", Proc. SPIE 11617, International Conference on Optoelectronic and Microelectronic Technology and Application, 116173A (4 December 2020); https://doi.org/10.1117/12.2585442

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