Rubidium spectroscopy at 778–780 nm with a distributed feedback laser diode
Rubidium spectroscopy at 778–780 nm with a distributed feedback laser diode
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DOI：
10.1002/lapl.200410155
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发表时间：
2004-10
影响因子：
1.7
通讯作者：
S. Kraft;A. Deninger;C. Trück;J. Fortágh;F. Lison;C. Zimmermann
中科院分区：
文献类型：
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作者：
S. Kraft;A. Deninger;C. Trück;J. Fortágh;F. Lison;C. Zimmermann
我们用单模连续波分布反馈(DFB)激光二极管对Rb进行了高分辨光谱研究。用接近自然线宽的分辨率记录了85Rb和87Rb的D2谱线的饱和光谱。仅使用商用的伺服设备，发射频率就被积极地稳定到无多普勒的过渡，相对精度好于109的7等份。80 mW的输出功率足以实现87Rb的5S-5D跃迁的双光子光谱。此外，我们还报道了DFB二极管的光谱特性、调谐范围和频率调制特性。用高分辨率无多普勒双光子光谱仪测得半导体激光器的线宽为4 MHz，没有采用任何有源稳定技术。对于时间尺度低于5μ的S，线宽降至2 MHZ以下。
We have performed high resolution spectroscopy of rubidium with a single mode continuous wave distributed feedback (DFB) laser diode. The saturation spectrum of the D2-line of 85Rb and 87Rb was recorded with a resolution close to the natural line width. The emission frequency was actively stabilized to Doppler-free transitions with a relative accuracy of better than 7 parts in 109 using commercially available servo devices only. An output power of 80 mW was sufficient to allow for two-photon spectroscopy of the 5S-5D-transition of 87Rb. Further, we report on the spectral properties of the DFB diode, its tuning range and its frequency modulation properties. The line width of the diode laser, determined with high resolution Doppler free two photon spectroscopy, was 4 MHz without applying any active stabilization techniques. For time scales below 5 μs the line width drops below 2 MHz.