A robust and compact blue optical frequency reference within blue region was designed. A 40-mW tellurium-stabilized single-frequency blue diode laser in external cavity was designed with an absorption spectroscopy method based on tellurium molecular transitions. Furthermore, the uncertainty of the frequency stabilization can be pushed to 2 × 10⁻⁹ at a 10-s integration time. In addition, the correspondence frequency instability was 1.3 MHz when the laser wavelength was 445.75 nm. This study indicates that high-stability frequency reference within the blue region can be achieved with an external cavity diode laser as opposed to the diode-pumped frequency-doubled solid-state laser.

中文翻译：

---

碲稳定蓝色激光二极管

设计了一种在蓝色区域内稳健且紧凑的蓝色光学频率参考。采用基于碲分子跃迁的吸收光谱法设计了一种40 mW 稳定的外腔碲单频蓝光二极管激光器。此外，频率稳定的不确定性可以在 10 秒的积分时间内推到 2 × 10 ^{-9 。}此外，当激光波长为445.75 nm时，对应频率不稳定性为1.3 MHz。这项研究表明，相对于二极管泵浦倍频固态激光器，可以使用外腔二极管激光器实现蓝色区域内的高稳定性频率参考。