Cs Faraday optical filter with a single transmission peak resonant with the atomic transition at 455 nm.
Cs Faraday optical filter with a single transmission peak resonant with the atomic transition at 455 nm.
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DOI：
10.1364/oe.20.025817
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发表时间：
2012-11
期刊：
影响因子：
3.8
通讯作者：
Yanfei Wang;Xiaogang Zhang;Dongying Wang;Zhiming Tao;W. Zhuang;Jingbiao Chen
中科院分区：
文献类型：
--
作者：
Yanfei Wang;Xiaogang Zhang;Dongying Wang;Zhiming Tao;W. Zhuang;Jingbiao Chen
我们在455 nm处发现了一个与6S（1/2），F = 4 → 7 P（3/2），F' = 3，4，5跃迁共振的单透射峰Cs FADOF（法拉第反常色散滤光器）。该滤波器实现了86%的单峰透射率。利用饱和吸收谱技术，得到了该晶体的单峰带宽，为1.5GHz。虽然大多数其他FADOFs工作在远离吸收的频率，但我们实现的滤波器可以提供与原子跃迁完全共振的光，具有高透射率。我们还发现，在一定温度下，通过改变磁场强度，可以得到一个单一的透射峰，而不是许多远离吸收的峰。这种技术也可以应用于其他碱金属原子。
We demonstrate a Cs FADOF (Faraday anomalous dispersion optical filter) with a single transmission peak resonant with the 6S(1/2), F = 4 → 7P(3/2), F' = 3, 4, 5 transition at 455 nm. The filter achieves a single peak transmission of 86%. With the technique of saturated absorption spectra, we obtain the bandwidth of the single peak, which is 1.5 GHz. While most of other FADOFs operate at frequencies far from absorption, the filter we have realized can provide light exactly resonant with atomic transitions with a high transmission. We also find that, at a particular temperature, we can achieve a single transmission peak rather than many peaks far from absorption by changing the strength of magnetic field. This technique can also be applied to other alkali atoms.