Active, controlled circular, and spin-rotational movement of optically trapped airborne micro-particles
Abstract
We present a novel method for actively controlling circular and/or spin-rotational motion of an optically trapped airborne micro-particle. A 532-nm Gaussian laser beam is shaped into an elliptical ring by a pair of axicons and a cylindrical lens. The shaped beam is then focused into an elliptic cone that produces an optical trap. As the cylindrical lens is rotated, a torque is exerted on the trapped particle, resulting in circular or spin-rotational motion. We show examples of the circular-rotational movement as a function of laser power and the rotation rate of the cylindrical lens.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 20, 2021
- Source ID
- 10.1364/ol.443506
Entities
People
- Aimable Kalume
- Chuji Wang
- Gorden Videen
- Jessica A. Arnold
- Yong-Le Pan
Organizations
- Defense Threat Reduction Agency
- Kyung Hee University
- Mississippi State University
- Space Science Institute
- Texas A&M University