论文标题
通过使用二分性原子蒸气和转移腔的紫外线激光器的高性能频率稳定
High-performance frequency stabilization of ultraviolet diode lasers by using dichroic atomic vapor spectroscopy and transfer cavity
论文作者
论文摘要
紫外线（UV）二极管激光器在许多光子应用中广泛使用。但是它们的频率稳定方案不像频率倍增激光器那样成熟，这主要是由于紫外光谱区域的某些局限性。在这里，我们开发了一种高性能的UV频率稳定技术，该技术通过组合二分法原子蒸气激光锁和谐振转移腔锁来直接在UV二极管激光器上实现。例如，我们在20分钟内证明了稳定的锁定稳定锁定频率标准偏差约为200 kHz和300 kHz，399nm和370nm二极管激光器。对于目标370nm激光器，我们在一个小时内实现了不超过1 MHz的长期频率漂移，并通过单个被困的$^{171} $ yb $^+$ ion的荧光计数进一步验证。我们还发现锁点和环境因素（例如温度和大气压）之间的线性相关性很强。
Ultraviolet (UV) diode lasers are widely used in many photonics applications. But their frequency stabilization schemes are not as mature as frequency-doubling lasers, mainly due to some limitations in the UV spectral region. Here we developed a high-performance UV frequency stabilization technique implemented directly on UV diode lasers by combining the dichroic atomic vapor laser lock and the resonant transfer cavity lock. As an example, we demonstrate a stable locking with frequency standard deviations of approximately 200 KHz and 300 KHz for 399nm and 370nm diode lasers in 20 minutes. We achieve a long-term frequency drift of no more than 1 MHz for the target 370nm laser within an hour, which was further verified with fluorescence counts rates of a single trapped $^{171}$Yb$^+$ ion. We also find strong linear correlations between lock points and environmental factors such as temperature and atmospheric pressure.
