Active optomechanics is a subfield of optomechanics that focuses on the use of light to actively control the motion of mechanical systems. Optomechanical systems consist of optical and mechanical components that are coupled in such a way that light can affect the motion of the mechanical components and vice versa. In active optomechanics, this interaction is actively controlled, making it possible to use light to manipulate the motion of the mechanical components.
The basic principle of active optomechanics is to use the radiation pressure of light to exert a force on a mechanical system. The force is proportional to the intensity of the light and the size of the mechanical system. By controlling the intensity and phase of the light, it is possible to control the motion of the mechanical system.
Active optomechanics has a wide range of applications, including precision sensing, quantum information processing, and precision metrology. In precision sensing, active optomechanics is used to measure small displacements, forces, and temperatures with high precision. In quantum information processing, active optomechanics is used to create and manipulate quantum states of mechanical systems, such as mechanical resonators and nanomechanical cantilevers. In precision metrology, active optomechanics is used to make high-precision measurements of fundamental physical constants, such as the Planck constant and the gravitational constant.
Active optomechanics is a rapidly growing field that is advancing our understanding of the interactions between light and matter, and it holds promise for a wide range of new applications in science and technology.
