High-performance frequency stabilization of ultraviolet diode lasers by using dichroic atomic vapor spectroscopy and transfer cavity

• 作者: Chenhao Zhu Danna Shen Liangyu Ding Qiuxin Zhang Wei Zhang Xiang Zhang Yuxin Wang
• 来源期刊: 中国物理B（英文版）
• 关键词: frequency stabilization ultraviolet diode laser dichroic atomic vapor spectroscopy transfer cavity
• 年，卷（期）: 2020,（7）
• 页码范围: 406-413
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/ab8c41

摘要

We develop a high-performance ultraviolet (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 measured frequency standard deviations of approximately 200 kHz and 300 kHz for 399 nm and 370 nm diode lasers in 20 min.We achieve a long-term frequency drift of no more than 1 MHz for the target 370 nm laser within an hour,which is further verified with fluorescence count rates of a single trapped 171yb+ ion.We also find strong linear correlations between lock points and environmental factors such as temperature and atmospheric pressure.Our approach provides a simple and stable solution at a relatively low cost,and features flexible control,high feedback bandwidth and minimal power consumption of the target UV laser.