Vortex beams feature a continuous helical phase gradient and carry orbital angular momentum (OAM), generating a phase gradient force that induces particle rotation. This technology is highly significant for trapping microparticles, measuring piconewton-scale forces, and fabricating micro-devices across biomedical science and micro/nano-fabrication.

This product constructs a complete vortex-beam-based optical tweezers setup. In this system, a circularly polarized beam passes through a q-plate/vortex waveplate to generate a vortex beam. Utilizing the optical trapping and optical torque of the vortex light, multiple particles can be manipulated simultaneously—allowing particle clusters to translate or rotate along defined circular trajectories. A CCD camera connected to a PC provides real-time visualization of particle dynamics, enabling convenient observation and data recording for students.