论文标题
热RB蒸气中的定向性THZ兴奋至Rydberg状态
Directional THz generation in hot Rb vapor excited to a Rydberg state
论文作者
论文摘要
我们在加热的蒸气单元格中光学上激发了$^{85} $ rb原子，向低洼的rydberg state 10d $ _ {5/2} $，并观察3.3 thz和7.8 thz的方向性terahertz（thz）光束。这些THZ字段是通过从10d $ _ {5/2} $状态到11p $ _ {3/2} $和8F $ _ {7/2} $状态的11p $ _ {5/2} $状态生成的。此外，我们观察到由光泵激光器和3.3 THz场的四波混合产生的紫外线（UV）光。我们表征了对泵激光器的失沟和功率产生的THZ功率，并分别确定有利于THZ和UV产生的实验条件。我们的方案铺平了一种新的途径，可以产生高功率窄带THZ辐射。
We optically excite $^{85}$Rb atoms in a heated vapor cell to a low-lying Rydberg state 10D$_{5/2}$ and observe directional terahertz (THz) beams at 3.3 THz and 7.8 THz. These THz fields are generated by amplified spontaneous emission from the 10D$_{5/2}$ state to the 11P$_{3/2}$ and 8F$_{7/2}$ states, respectively. In addition, we observe ultraviolet (UV) light produced by four-wave mixing of optical pump lasers and the 3.3 THz field. We characterize the generated THz power over the detuning and power of pump lasers, and identify experimental conditions favoring THz and UV generation, respectively. Our scheme paves a new pathway towards generating high-power narrow-band THz radiation.
