Two kinds of high-contrast optical filters for the detection of Stokes and anti-Stokes photons from cesium ensemble
Two kinds of high-contrast optical filters for the detection of Stokes and anti-Stokes photons from cesium ensemble
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DOI：
10.1117/12.999891
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发表时间：
2012-11
影响因子：
1.8
通讯作者：
Tingting Liu;Q. Liang;Jun He;Junmin Wang
中科院分区：
文献类型：
--
作者：
Tingting Liu;Q. Liang;Jun He;Junmin Wang
根据探测Λ型三能级原子系综中量子关联Stokes和反Stokes光子对的需要，分别利用激光抽运原子蒸气和适当设计的Fabry-Perot标准具，对两种高对比度光学滤波器进行了实验研究.在47.15°C下，激光泵浦铯原子滤波器的峰值透过率约为74.3%，激发通道与9.19GHz频率失谐信号通道的分辨比约为26.7dB。透射峰可以在Cs D2线的多普勒线宽范围内调谐。实现了具有几十GHz谐振传输可调谐性的温度稳定窄带标准具滤波器，典型峰值传输率~ 91.7%，泵浦与信号通道区分比~27.5 dB。这些技术对于原子-光子相互作用实验，特别是基于Cs原子系综集体拉曼激发的Stokes和反Stokes光子对产生实验是有用的。
We report experimental investigations of two kinds of high-contrast optical filters by utilizing a laser-pumped atomic vapor and properly-designed Fabry-Perot bulk etalon, which are based on the demand of the detection of quantum correlated Stokes and anti-Stokes photon pairs in a Λ-type three-level atomic ensemble, respectively. Laser-pumped cesium (Cs) atomic filter achieves typical peak transmission ~ 74.3% and the distinction ratio between excitation channel and 9.19GHz- frequency-detuned signal channel is ~ 26.7 dB at 47.15°C. The transmission peak can be tuned within the range of Doppler line-width of Cs D2 line. The temperature-stabilized narrow-band etalon filter with dozens of GHz resonant transmission tunability is realized with typical peak transmission of ~ 91.7% and the distinction ratio between pump and signal channel of ~27.5 dB. These techniques are useful for atom-photon interaction experiments, especially for Stokes and anti-Stokes photon pairs generation experiments based on collective Raman excitation of Cs atomic ensemble.