Emerging Applications and Conclusions
摘要
OAM has found applications also outside the field of optical, radio, and acoustic communications. Thanks to the work of Nobel laureate Arthur Ashkin, light has since long been used to trap small particles in what we call optical tweezers. Optical tweezers use a single tightly focused beam with a large-enough gradient force around the focus to overcome the linear momentum of the light, attracting the particles toward the center.