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arXiv 2008.01104physics.atom-phphysics.optics
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40 W,780 nm laser原子干涉仪

A 40 W, 780 nm laser system with compensated dual beam splitters for atom interferometry

Minjeong Kim, Remy Notermans, Chris Overstreet, Joseph Curti, Peter Asenbaum, Mark A. Kasevich

摘要:

我们展示了一个窄线宽780 nm的激光系统,高达40 W的功率和230 MHz的频率调制带宽。非线性光学元件上的有效重叠将两对锁相频率分量组合成单个光束。使用具有高质量锯齿波波形的Serrodyne调制在数十MHz范围内以> 96.5%的效率执行频移。该系统通过同时提供斯塔克位移补偿的双分束器,同时最大限度地减少自发发射,实现了下一代原子干涉测量。

英文摘要:

We demonstrate a narrow-linewidth 780 nm laser system with up to 40 W power and a frequency modulation bandwidth of 230 MHz. Efficient overlap on nonlinear optical elements combines two pairs of phase-locked frequency components into a single beam. Serrodyne modulation with a high-quality sawtooth waveform is used to perform frequency shifts with > 96.5 % efficiency over tens of MHz. This system enables next-generation atom interferometry by delivering simultaneous, Stark-shift-compensated dual beam splitters while minimizing spontaneous emission.

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