The ability to create dynamic, tailored optical potentials has become important across fields ranging from biology to quantum science. We demonstrate a method for the creation of arbitrary optical tweezer potentials using the broadband spectral profile of a superluminescent diode combined with the chromatic aberration of a lens. A tunable filter, typically used for ultrafast laser pulse shaping, allows us to manipulate the broad spectral profile and therefore the optical tweezer potentials formed by focusing of this light. We characterize these potentials by measuring the Brownian motion of levitated nanoparticles in vacuum and also demonstrate interferometric detection and feedback cooling of the particle’s motion. This simple and cost-effective technique will enable wide application and allow rapid modulation of the optical potential landscape in excess of megahertz frequencies.

中文翻译：

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使用宽带光的悬浮

在从生物学到量子科学的各个领域，创造动态的，量身定制的光势的能力已经变得非常重要。我们演示了一种使用超发光二极管的宽带光谱轮廓结合透镜色差来创建任意光学镊子势的方法。通常用于超快激光脉冲整形的可调滤波器，使我们能够操纵宽光谱轮廓，因此可以操纵通过聚焦此光而形成的光镊势。我们通过测量真空中悬浮的纳米粒子的布朗运动来表征这些电势，并且还演示了干涉检测和粒子运动的反馈冷却。