Precision generation and measurements of small static and dynamic forces by means of radiation pressure of multipass laser beam

利用多道激光束的辐射压力精确生成和测量微小的静态和动态力

基本信息

批准号：
409476492
负责人：
Dr.-Ing. Suren Vasilyan
金额：
--
依托单位：
Institut für Prozessmess- und Sensortechnik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2018
资助国家：
德国
起止时间：
2017-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/409476492?language=en
关键词：
Precision generation measurements small static

项目摘要

The force sensing, optomechanics, and variety of quantum motion experiments require accurate and precise measurements of the acting forces. Using the momentum of absorbed and re-emitted photons of the laser field it is possible to generate calibration forces directly traceable to the International System of Units (SI). In this project we propose a method of extending the effective use of the momentum of the photon by utilization of the power of the multi-pass laser beam. We provide a comparison of the basic theoretical computations with the confirming initial experimental measurements focusing on a particular example of geometrical and experimental settings by which the augmentation of the forces produced by the momentum of the photon is extended from several hundreds of pN up to sub-μN range. We aim to provide new perspectives, ideas and strategies of harnessing the quantum mechanics with the principles well defined in the classical mechanics. The objective is a systematic theoretical and experimental investigation of the possibilities to use quantum mechanical approach to generate forces and their measurements using classical mechanical systems. Also the opportunities to take into account the fundamental physical limits associated with this method and other competing contributing effects which in metrological tasks might be considered as error sources, to be investigated in details. Besides of the practical perspectives in applying this method in precision force calibration tasks, it is also proposed to use the method for calibration measurements of the power of the laser sources.

力传感器，光学力学和各种量子运动实验需要对作用力进行准确，精确的测量。利用激光场的吸收和重新发射照片的动量，可以生成可直接追溯到国际单位系统（SI）的校准力。在这个项目中，我们提出了一种通过利用多通激光束的功率来扩展光子动量的方法。我们提供了基本理论计算的比较，并确认了最初的实验测量，重点是几何和实验环境的特定示例，通过该示例，光子动量产生的力的增强将从数百个PN扩展到亚基范围。我们旨在提供新的观点，思想和策略，以通过经典力学中定义的原则来利用量子力学。该目标是对使用量子机械方法的可能性进行系统的理论和实验研究，使用经典的机械系统来产生力及其测量。同样，有机会考虑到与该方法相关的基本物理限制以及其他竞争性贡献效应，这些效果在计量学任务中可能被视为错误源，并详细研究。除了在精确的力校准任务中应用此方法的实际观点外，还建议使用该方法来校准激光源功能。