| Títol: | Back Focal Plane Interferometry for Holographic Optical Traps |
| Autor: | Martínez Llinàs, Jade |
| Altres autors/autores: | Montes Usategui, Mario |
| Editorial: | Universitat Politècnica de Catalunya |
| Matèries: | Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Telecomunicació òptica::Fotònica
Holography
Interferometry
Optical trapping
Spatial light modulator
Digital holography
Acousto-optic-deflectors
Back focal plane interferometry
Holografia
Interferometria |
| Tipus de document: | Master thesis |
| Descripció: | Projecte final de màster fet en col.laboració amb Universitat Autònoma de Barcelona (UAB), Universitat de Barcelona (UB) i
Institut de Ciències Fotòniques (ICFO)
English: Since its invention in 1986, optical trapping as a tool to manipulate
microparticles non-invasively has found many applications in physics and biology.
Force measurement on biomaterials is a potential application of optical tweezers which
requires precise position detection. Back focal plane interferometry has become a
commonly precise method for position detection, but it is limited to single trap
calibration. However, the study of complex biological systems requires simultaneous
multiple trap manipulation. Time-sharing a trap at kHz by acousto-optic-deflectors
produces multiple independent tweezers, but limited to two dimensions. In this work,
we aim to combine the versatility of digital holography for simultaneous multiple
manipulation with the precision of back focal plane interferometry for force
measurement. A holographic optical system set-up has been built and used to generate
two traps with orthogonal polarizations: a fixed trap useful for measuring forces, and a
holographic tweezer which allows dynamic manipulation. This method represents a
step towards simultaneous manipulation with many holographic traps and precise
position detection with only one trap |
| Altres identificadors i accés: | http://hdl.handle.net/2099.1/13274 |
| Disponible al dipòsit: | Treballs acadèmics UPC
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