论文标题
气相甲烷中的振动式极化子
Rovibrational Polaritons in Gas-Phase Methane
论文作者
论文摘要
当分子集合的明亮光学转变与光腔模式频率匹配时，就会出现偏振状态。在这里，我们通过建立一个新的平台来研究气相分子中振动强耦合的新平台，从而研究偏振子在干净，孤立的系统中的行为。我们在优化的腔内低温缓冲燃气电池中访问了强烈的耦合方案，该电池可同时制备冷和致密的集合，并报告气相甲烷中的原则证明。我们强烈地进行了腔体的单个旋转振动过渡，并探测了一系列耦合强度和引诱。在存在强大的腔内吸收器的情况下，我们通过经典的空腔传输模拟来重现我们的发现。该基础设施为改变腔体化学的基准研究提供了新的测试床。
Polaritonic states arise when a bright optical transition of a molecular ensemble is resonantly matched to an optical cavity mode frequency. Here, we lay the groundwork to study the behavior of polaritons in clean, isolated systems by establishing a new platform for vibrational strong coupling in gas-phase molecules. We access the strong coupling regime in an intracavity cryogenic buffer gas cell optimized for the preparation of simultaneously cold and dense ensembles, and report a proof-of-principle demonstration in gas-phase methane. We strongly cavity-couple individual rovibrational transitions and probe a range of coupling strengths and detunings. We reproduce our findings with classical cavity transmission simulations in the presence of strong intracavity absorbers. This infrastructure provides a new testbed for benchmark studies of cavity-altered chemistry.
