使用商用波长计实现Laser频率稳定
Laser frequency stabilization using a commercial wavelength meter
摘要：
我们提出了一种激光频率稳定方案的表征使用一个国家的最先进的波长计固体斐索干涉仪的基础上。对于工作在461 nm的倍频钛蓝宝石激光器，在10 μ h内，绝对Allan偏差小于$10^{-9}$，标准偏差为$1$ MHz。利用该激光器冷却和俘获锶原子，波长计方案在单通道操作中提供了优异的稳定性。多模光纤开关的多通道操作导致与激光器的剩余频率偏移相关的原子荧光的波动。基于波长计的稳频方案可以应用于广泛的原子和分子的激光光谱学，冷却和捕获。
英文摘要：
We present the characterization of a laser frequency stabilization scheme using a state-of-the-art wavelength meter based on solid Fizeau interferometers. For a frequency-doubled Ti-sapphire laser operated at 461 nm, an absolute Allan deviation below $10^{-9}$ with a standard deviation of $1$ MHz over 10\,h is achieved. Using this laser for cooling and trapping of strontium atoms, the wavemeter scheme provides excellent stability in single-channel operation. Multi-channel operation with a multimode fiber switch results in fluctuations of the atomic fluorescence correlated to residual frequency excursions of the laser. The wavemeter-based frequency stabilization scheme can be applied to a wide range of atoms and molecules for laser spectroscopy, cooling and trapping.
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