标题： 一种超慢光离心机。 一。 通过光谱聚焦实现零旋转加速度 显示英文标题

标题： An ultra-slow optical centrifuge. I. Zero rotational acceleration by spectral focusing

摘要： 光学离心机是一种激光脉冲，能够实现分子的可控旋转激发。 以明确的角频率旋转的离心分子是研究纳米尺度多体量子系统的理想候选者。 由于与量子环境的相互作用增加了嵌入分子探针的有效转动惯量，光学离心机所需的旋转加速度必须降低以适应绝热旋转。 我们展示了一种基于光谱聚焦方法的新设计的光学离心机，该方法能够实现极低甚至零的旋转加速度。 我们讨论了使用这种恒定频率离心机来研究氦纳米液滴内分子旋转的潜力。 显示英文摘要

摘要： An optical centrifuge is a laser pulse which enables controlled rotational excitation of molecules. Centrifuged molecules rotating with well-defined angular frequencies are ideal candidates to probe many-body quantum systems at the nanoscale. Because the interaction with the quantum environment increases the effective moment of inertia of the embedded molecular probes, the required rotational acceleration of the optical centrifuge must be lowered to accommodate adiabatic spinning. We demonstrate a new design of an optical centrifuge, based on the method of spectral focusing, which enables extremely low, down to zero, rotational accelerations. We discuss the potential of using such constant frequency centrifuge to investigate molecular rotation inside helium nanodroplets.