论文标题
高精度测量的高精度分裂和AC鲜明的变化$ 7D $ $^{2} d_ {3/2} $状态
High precision measurement of the hyperfine splitting and ac Stark shift of the $7d$ $^{2}D_{3/2}$ state in atomic cesium
论文作者
论文摘要
我们报告了在$ 7D $ $^{2} d_ {3/2} $ $^{133} $ cs中使用高分辨率多普勒双光谱光谱的$ 7D $^{2} d_ {3/2} $状态的测量值。我们确定超精细耦合常数$ a = 7.3509（9）$ MHz和$ b = -0.041（8）$ MHz，这代表了精确度的数量级提高。我们还获得了核磁性八极耦合常数$ c $的范围。此外，我们测量了$ 6S $ $ $^{2} s_ {1/2} \ rightArrow 7d $ $^{2} d_ {3/2} $在767.8 nm的过渡到$ -49 \ $ -49 \ pm 5 $ hz/（w/cm $^2 $），与the the Ortical计算一致。我们进一步报告了碰撞转移[$ -32.6 \ pm 2.0 $ kHz/mtorr]的测量，以及$ 6S $ $^{2} s_ {1/2} \ rightArrow 7d $ $ $^{2} d_ {2} d_ {3/2} d_ {3/2} $ truntion $ 6s $ $^{2} s_ {1/2} s_ {1/2} s_ {1/2} s_ {1/2} s_这些测量值提供了有价值的输入，用于基于Cesium $ 6S $ $ $^{2} s_ {1/2} \ rightArrow 7d $ $ $^{2} d_ {3/2} $ two-Twy-Photon Transtion $ 6S $ $^{2} S_ {1/2} s_ {1/2} s_ {1/2} $ twoton Tressition $ 6s $ $^{2} S_ {1/2} S_ {1/2}
We report the measurement of hyperfine splitting in the $7d$ $^{2}D_{3/2}$ state of $^{133}$Cs using high resolution Doppler-free two-photon spectroscopy in a Cs vapor cell. We determine the hyperfine coupling constants $A = 7.3509(9)$ MHz and $B = -0.041(8)$ MHz, which represent an order of magnitude improvement in the precision. We also obtain bounds on the magnitude of the nuclear magnetic octupole coupling constant $C$. Additionally, we measure the ac Stark shift of the $6s$ $^{2}S_{1/2} \rightarrow 7d$ $^{2}D_{3/2}$ transition at 767.8 nm to be $-49 \pm 5$ Hz/(W/cm$^2$), in agreement with theoretical calculations. We further report the measurement of collisional shift [$-32.6 \pm 2.0$ kHz/mTorr] and pressure broadening for the individual hyperfine levels of the $6s$ $^{2}S_{1/2} \rightarrow 7d$ $^{2}D_{3/2}$ transition. These measurements provide valuable inputs for analysis of systematic effects in optical frequency standards based on the cesium $6s$ $^{2}S_{1/2} \rightarrow 7d$ $^{2}D_{3/2}$ two-photon transition
