摘要
基于现场可编程门阵列技术(Field-Programmable Gate Array,FPGA),我们开发了采样速率、数据处理长度等多参数可调的快速傅立叶变换功能模块,用于灵活匹配实验测量中所要求的带宽和谱分辨率等参数要求。通过磁光法拉第自旋噪声谱在半导体的对比测量,我们验证了FPGA技术的数据处理速率是商业谱分析仪的600倍左右。
We have developed real-time fast Fourier transformation(FFT)of a tunable sampling rate and data length using a field-programmable gate array(FPGA),respectively,for a best match of the spectral bandwidth and spectral resolution required in a specific measurement.By performing spin noise measurements of Faraday rotation in n-GaAs,we have demonstrated that the rate of processing data by the developed FPGA-based FFT is higher by a factor of-600than that by a commercial spectrum analyzer.
出处
《量子光学学报》
北大核心
2017年第3期228-231,共4页
Journal of Quantum Optics
基金
国家自然科学基金(61574087)
山西省基础研究优秀青年基金(2015021002)
山西省回国留学人员科研资助项目(2015-009)
关键词
自旋噪声谱
快速傅里叶变换
现场可编程门阵列
spin noise spectroscopy
fast Fourier Transform
field-programmable gate array