We demonstrate the use of the angular Doppler effect to obtain continuous motion of interference patterns. A small frequency shift between two beams can create such a moving pattern. By rotating a half wave plate in one arm of an interferometer, frequency shifts in the optical domain from less than 1 Hertz to kHz are achieved. We apply moving interference patterns in an optical tweezers set-up to enable controlled and continuous motion of optically trapped particles and structures.
|Number of pages||5|
|Journal||Proceedings of SPIE - The International Society for Optical Engineering|
|Publication status||Published - 1 Sep 2003|
|Event||PROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: International Conference on Lasers, Applications, and Technologies 2002 Laser Processing of Advanced Materials and Laser Microtechnologies - Moscow, Russian Federation|
Duration: 22 Jun 2002 → 27 Jun 2002
- Doppler effect