中文摘要：

我们报导 420 nm 有一个干扰过滤器的外部洞二极管激光(如果) 狭窄带宽的 0.5 nm 和 79% 高传播，它首先为 Rb 被使用光频率标准。IF 和猫眼睛反射镜被用于分别地选择波长和轻反馈。当二极管激光是免费的跑时，测量激光线宽是 24 kHz。用这狭窄线宽如果蓝二极管激光，没有一个复杂准同步数字系列系统，我们认识到一个紧缩的 Rb 光频率标准。Rb 光频率标准的初步的稳定性在 1 s 并且减少到在 1000 s。狭窄线宽的特征为紧缩的 Rb 光频率标准使 IF 蓝二极管激光成为一个很好适合的候选人。

英文摘要：

We report a 42Ohm external cavity diode laser with an interference filter （IF） of 0.5am narrow-bandwidth and 79% high transmission, which is first used for Rb optical frequency standard. The IF and the cat-eye reflector are used for selecting wavelength and light feedback, respectively. The measured laser linewidth is 24 kHz when the diode laser is free running. Using this narrow-linewidth IF blue diode laser, we realize a compact Rb optical frequency standard without a complicated PDH system. The preliminary stability of the Rb optical frequency standard is 2 × 10^-13 at I s and decreases to 1.9 ×10^-14 at 1000s. The narrow-linewidth characteristic makes the IF blue diode laser a well suited candidate for the compact Rb optical frequency standard.