Abstract
We present a low cost radio-frequency (RF) generator suitable for experiments with cold atoms. The RF source achieves a sub-hertz frequency with tunable resolution from 0 MHz to 400 MHz and a maximum output power of 33 dBm. Based on a direct digital synthesizer (DDS) chip, we implement a ramping capability for frequency, amplitude and phase. The system can also operate as an arbitrary waveform generator. By measuring the stability in a duration of 600 s, we find the presented device performs comparably as Agilent33522A in terms of short-term stability. Due to its excellent performance, the RF generator has been already applied to cold atom trapping experiments.
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This work has been supported by the National Natural Science Foundation of China (No.51275523), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (No.20134307110009).
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Wei, Ch., Yan, Sh. Multifunctional radio-frequency generator for cold atom experiments. Optoelectron. Lett. 12, 173–177 (2016). https://doi.org/10.1007/s11801-016-6050-1
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DOI: https://doi.org/10.1007/s11801-016-6050-1