Zentile Mark A, Whiting Daniel J, Keaveney James, Adams Charles S, Hughes Ifan G
Opt Lett. 2015 May 1;40(9):2000-3. doi: 10.1364/OL.40.002000.
We demonstrate an atomic bandpass optical filter with an equivalent noise bandwidth less than 1 GHz using the D1 line in a cesium vapor. We use the ElecSus computer program to find optimal experimental parameters and find that, for important quantities, the cesium D1 line clearly outperforms other alkali metals on either D-lines. The filter simultaneously achieves a peak transmission of 77%, a passband of 310 MHz, and an equivalent noise bandwidth of 0.96 GHz, for a magnetic field of 45.3 G and a temperature of 68.0°C. Experimentally, the prediction from the model is verified. The experiment and theoretical predictions show excellent agreement.
我们展示了一种原子带通光学滤波器，其在铯蒸汽中使用D1线，等效噪声带宽小于1 GHz。我们使用ElecSus计算机程序来寻找最佳实验参数，并发现，对于重要参数而言，铯D1线在D线方面明显优于其他碱金属。对于45.3 G的磁场和68.0°C的温度，该滤波器同时实现了77%的峰值透射率、310 MHz的通带和0.96 GHz的等效噪声带宽。通过实验验证了模型的预测。实验与理论预测显示出极佳的一致性。
