Abstract
Optical trapping and manipulation are based on three types of the force and momentum, in the range of pN, to grab, lift and rotate microparticles due to the light intensity or phase distribution. In the first type, particles are trapped in the highest intensity region of the beam due to optical gradient force for high refractive index particles with respective to its surrounding medium. Secondly, orbital angular momentum (OAM) of a beam can be transferred to a particle due to phase singularity within a beam. Thirdly, spin angular momentum (SAM) can be transferred to the particles due to the circular polarization of the beam. In recent years, microfabricated optical elements have been used to modulate the amplitude and phase of the optical beam to create new generation of optical tweezers with additional manipulation dimensions. In this paper, a review of our recent discoveries of optical trapping and manipulation using micro-beam shaping and micro-optical elements will be presented.
| Original language | English |
|---|---|
| Article number | 05 |
| Pages (from-to) | 27-33 |
| Number of pages | 7 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5636 |
| Issue number | PART 1 |
| DOIs | |
| Publication status | Published - 2005 |
| Externally published | Yes |
| Event | Holography, Diffractive Optics, and Applications II - Beijing, China Duration: 8 Nov 2004 → 11 Nov 2004 |