PJW Hands
Modal liquid crystal devices in optical tweezing: 3D control and oscillating potential wells
Hands, PJW; Tatarkova, SA; Kirby, AK; Love, GD
Authors
SA Tatarkova
AK Kirby
GD Love
Abstract
We investigate the use of liquid crystal (LC) adaptive optics elements to provide full 3 dimensional particle control in an optical tweezer. These devices are suitable for single controllable traps, and so are less versatile than many of the competing technologies which can be used to control multiple particles. However, they have the advantages of simplicity and light efficiency. Furthermore, compared to binary holographic optical traps they have increased positional accuracy. The transmissive LC devices could be retro-fitted to an existing microscope system. An adaptive modal LC lens is used to vary the z-focal position over a range of up to 100 μm and an adaptive LC beam-steering device is used to deflect the beam (and trapped particle) in the x-y plane within an available radius of 10 μm. Furthermore, by modifying the polarisation of the incident light, these LC components also offer the opportunity for the creation of dual optical traps of controllable depth and separation.
Citation
Hands, P., Tatarkova, S., Kirby, A., & Love, G. (2006). Modal liquid crystal devices in optical tweezing: 3D control and oscillating potential wells. Optics Express, 14(10), 4525-4537. https://doi.org/10.1364/oe.14.004525
Journal Article Type | Article |
---|---|
Publication Date | 2006-05 |
Deposit Date | Mar 15, 2007 |
Publicly Available Date | Nov 10, 2010 |
Journal | Optics Express |
Publisher | Optica |
Peer Reviewed | Peer Reviewed |
Volume | 14 |
Issue | 10 |
Pages | 4525-4537 |
DOI | https://doi.org/10.1364/oe.14.004525 |
Keywords | Lasers, Laser optics, Trapping, Liquid-crystal devices. |
Publisher URL | http://www.opticsexpress.org/abstract.cfm?id=89934 |
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Copyright Statement
© 2006 Optical Society of America.
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