论文标题
使用电声调制的偏移锁具有440 GHz范围
Offset Lock with 440 GHz Range using Electro-Optic Modulation
论文作者
论文摘要
偏移锁定是稳定激光频率的流行方法，这对于许多物理实验至关重要。宽范围的偏移锁是可取的，因为它们在实验中增加了可用频率的跨度。在这里，我们在实验上使用Beat-Note设置与电声相调制相结合，在实验上实现了广泛的偏移锁。通过使用节拍音符的频率下转换并锁定由电声调制产生的边带，我们实现了$ \ pm $ \ pm $ 220.1 GHz的偏移范围，偏移频率波动在0.1 Hz以下，实现了具有最大的锁定范围的光学杂项偏移锁。我们的设置的相对简单性提供了一种令人信服的方法，可以在数百GHz范围内锁定锁定。
Offset locking is a popular method for stabilizing laser frequency, which is crucial to many physics experiments. Wide range offset locks are desirable, as they increase the span of usable frequencies in an experiment. Here, we experimentally realize a wide-range offset lock using a beat-note setup combined with electro-optic phase modulation. By using frequency down-conversion of the beat note and locking to sidebands generated by electro-optic modulation, we achieve an offset range of $\pm$ 220.1 GHz with offset frequency fluctuations under 0.1 Hz, enabling an optical heterodyne offset lock with the largest known range of any such lock. The relative simplicity of our setup provides a compelling method for locking at offsets in the hundreds of GHz range.
