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首页> 外文期刊>Applied optics >Detailed study of an efficient blue laser source by second-harmonic generation in a semimonolithic cavity for the cooling of strontium atoms
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Detailed study of an efficient blue laser source by second-harmonic generation in a semimonolithic cavity for the cooling of strontium atoms

机译：在半整体腔中通过第二谐波产生有效的蓝色激光源的详细研究，用于冷却锶原子

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摘要

We have constructed a blue laser source consisting of an amplified, grating tuned diode laser that is frequency doubled by a KNbO_(3) crystal in a compact standing wave cavity and produces as much as 200 mW of internal second-harmonic power. We have analyzed the unusual characteristics of this standing wave cavity to clarify the advantages and disadvantages of this configuration as an alternative to a ring cavity for second-harmonic generation. We emphasize its efficiency and stability and the fact that it has an inherent walk-off compensation, similar to twin crystal configurations. We demonstrate its utility for laser cooling and trapping of earth alkalis by stabilizing the laser to the 461-nm transition of strontium, using a heat pipe, and then forming a magneto-optic trap of strontium from a Zeeman-slowed atomic beam.
机译：我们构建了一个蓝色激光源，该蓝色激光源由放大的光栅调谐二极管激光器组成，该二极管激光器在紧凑的驻波腔中被KNbO_（3）晶体倍频，并产生高达200 mW的内部二次谐波功率。我们已经分析了这种驻波腔的不寻常特性，以阐明这种配置作为二次谐波产生的环形腔的替代方案的优缺点。我们强调它的效率和稳定性，以及它具有固有的偏移补偿（类似于双晶晶体配置）这一事实。我们通过使用热管将激光稳定到锶的461 nm跃迁，然后从Zeeman减慢的原子束中形成锶的磁光阱，证明了其在冷却和捕获碱土金属中的实用性。

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