Interference spectroscopy with advanced comb sources

光频梳是产生非常短且稳定的光脉冲的激光器。通过在光学和电学可测量频率之间提供精确而简单的联系，他们在2000年引发了频率计量学的革命，测量振荡和时间的科学。计时很重要，因为大多数测量单位都与时间直接相关，因为这是我们人类可以最精确测量的物理量。因此，当你为汽车购买一定量的汽油或支付水电费时，你依赖于国家实验室维护的国际时间标准。精确时间标准的更直接应用包括使用类似GPS的系统进行地理定位和在全球范围内同步所有金融交易。

Optical frequency combs are lasers that produce very short and stable light pulses. By providing a precise and simple link between optical and electrically measurable frequencies they ignited in 2000 a revolution in frequency metrology, the science of measuring oscillations and time. Time keeping is important because most measurement units are directly linked to time, as this is the physical quantity that we humans can measure most precisely. Hence, when you buy a volume of gas for your car or when you pay your utility bill, you rely on the international time standard maintained by national laboratories. More direct applications of a precise time standard include geo-localization using GPS-like systems and synchronizing all financial transactions on a global scale.