用583 nm半导体倍频激光器获得了碘分子R67（15-1）跃迁的超精细分量调制转移谱（MTS）。针对超冷铒原子实验中冷却光的频率稳定，利用Pound-Drever-Hall（PDH）稳频技术作为前级反馈将激光器稳定在法布里-珀罗腔，用碘分子MTS稳频作为后级反馈，以克服光学参考腔不可避免的长期漂移。稳频后4 h的监测结果表明，相比仅用PDH稳频的漂移量（205 kHz），双系统稳频时的最大频率起伏为±12 kHz，满足超冷铒原子实验系统长时间稳定运转的需求。本方案拓展了碘分子光谱在583 nm激光稳频的应用，也为激光冷却铕、铥等元素中冷却光的频率锁定提供了参考。

In this paper, a modulation transfer spectroscopy (MTS) of the hyperfine components at R67(15-1) transition of the iodine molecule is obtained with a 583 nm semiconductor frequency-doubling laser. For frequency stabilization of cooling laser in ultracold erbium experiment, the Pound-Drever-Hall (PDH) technique is used as the prefeedback to stabilize the laser to a Fabry-Perot cavity, and the MTS of iodine molecular is used as the secondary feedback to overcome the inevitable long-term drift of the optical reference cavity. The long-term drift data during 4 h show that, compared with the drift in frequency stabilization using only PDH technique (205 kHz), the maximum frequency fluctuation is within ±12 kHz for the two-stage laser stabilization. This meets the long-term stable operation requirements of the ultracold erbium atomic experimental system. The scheme expands the application of iodine molecular spectroscopy in 583 nm laser frequency stabilization, and provides a strategy for laser stabilization of cooling light in cold atom experiment with elements such as europium and thulium.