一种用于CPT原子频标的高性能解调电路

介绍了同步积分器和相敏检波器级联的解调电路及该电路在相干布居囚禁（CPT）原子频标中的应用。通过理论计算和先进设计系统软件进行的仿真表明，该解调电路具有很高的Q值和很好的抑制噪声能力，是一种可应用于CPT原子频标的解调电路。对电路的测试结果证实，该电路能够从光检测信号中解调出高性能的用于激光频率稳频的多普勒吸收谱线的微分曲线和用于微波频率稳频的CPT谱线的微分曲线。

A High-performance Demodulation Circuit for CPT Frequency Standard

A demodulation circuit that cascading the synchronous integrator and the phase sensitive detector and its application in the Coherent Population Trapping (CPT) atomic frequency standard is introduced. By theoretical calculation and the advanced design system software simulation, it is found that the demodulation circuit has high Q value and a good noise suppression capability and can be applied to CPT atomic frequency standard. By testing of the circuit, it’s confirmed that the circuit can demodulate the light detection signal and provide high-performance differential curve of the Doppler absorption spectrum used to lock the laser frequency and the differential curve of the CPT spectrum used to lock the microwave.