期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 86, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4938282
关键词
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资金
- Defense Advanced Research Projects Agency (DARPA)
- Office of Naval Research (ONR)
- Office of the Director of National Intelligence (ODNI) Intelligence Advanced Research Projects Activity (IARPA)
We describe a general purpose digital servo optimized for feedback control of lasers in atomic, molecular, and optical physics experiments. The servo is capable of feedback bandwidths up to roughly 1 MHz (limited by the 320 ns total latency); loop filter shapes up to fifth order; multiple-input, multiple-output control; and automatic lock acquisition. The configuration of the servo is controlled via a graphical user interface, which also provides a rudimentary software oscilloscope and tools for measurement of system transfer functions. We illustrate the functionality of the digital servo by describing its use in two example scenarios: frequency control of the laser used to probe the narrow clock transition of Al-27(+) in an optical atomic clock, and length control of a cavity used for resonant frequency doubling of a laser.
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