PPLN波导晶体二次谐波激发铷里德伯态的laser系统
A laser system for the excitation of rubidium Rydberg states using second harmonic generation in a PPLN waveguide crystal
摘要：
本文报道了一个波长为495 nm的激光系统，它适合于铷原子低里德堡态的激发。该系统是基于在周期性极化波导晶体中的种子二极管激光器的倍频。利用铷原子14D_5/2和14D_3/2态的直接双光子激光光谱，获得了高达35 mW的输出功率，并证明了单频特性。测量的精细结构分裂与量子亏损理论计算一致。
英文摘要：
We report on a laser system at a wavelength of 495 nm which is suitable for the excitations of low lying Rydberg states of rubidium atoms. The system is based on frequency doubling of a seeded diode laser in a periodically poled waveguide crystal. We achieve an output power of up to 35 mW and prove the single frequency performance by direct two photon laser spectroscopy of the rubidium 14D_5/2 and 14D_3/2 states. The measured fine structure splitting is consistent with quantum defect theory calculations.
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