Research of interferometric multiple optical tweezers
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Received Date:
2008-02-18
Accepted Date:
2008-03-31
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Abstract
In order to measure the optical trap force, how two beams with optical off-axes in one plane generate an interference field was introduced, based on which a so-called interferometric optical tweezers was built up.Firstly how two coplanar laser beams at a certain angle interfered was analyzed,i.e.,the principle of two-dimension optical tweezers,then the principle of the three-dimension optical tweezers was presented.After analyzing the force acting on the polystyrene beads, the analytical and experimental data of the optical trap force were obtained.The result showed that interferometric optical tweezers could provide cross trap force about pico-Newton level and achieve optical trapping,the experiment data accorded with the theoretic results very well when only the optical power and the full width half maximum of the beam were considered.The result is very helpful to optical tweezers' application in biology, biomedicine and nano-technology.
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References
|
[1]
|
ASHKIN A,DZIEDZIC J M,BJORKHOLM J E.Observation of a single beam gradient force optical trap for dielectric particles[J].Opt Lett,1986,20(6):288-290. |
|
[2]
|
ARTHUR E,CHIOU A,WANG W.Interferometric optical tweezers[J].Opt Commun,1997,26(9):7-10. |
|
[3]
|
TAN A L,ZHAO Y,SHI J Sh.The analysis of the optical trap force in a single optical trap based on MATLAB[J].Laser Technology,2004,28(4):373-375(in Chinese). |
|
[4]
|
KRONER A,RINALDI F,KARDOSH I,et al.Towards ultra-compact optical tweezers without external optics[C]//Laser and Eleetro-Optics Europe,2005.Munich:CLEO,2005:633. |
|
[5]
|
GARY J,HENRY T,ALAN J,et al.Advanced optical tweezers for the study of cellular and molecular biomechanics[J].Transaction on Biomedical Engineering,2003,50(1):57-62. |
|
[6]
|
ASHKIN A.History of optical trapping and manipulation of small-neutral particles,atoms,and moleculars[J].Selected Topics in IEEE J Q E,2000,6(6):841-856. |
|
[7]
|
HANSEN P M,FLYVBJERG H.Tweezercalib 2.0:faster version of MATLAB package for precise calibration of optical tweezers[J].Computer Physics Communications,2006,47(11):518-520. |
|
[8]
|
TAGUCHI K,ATSUTA K,NAKATA T,et al.Levitation of a microscopic object using plural optical fibers[J].Opt Commun,2000,29(8):43-47. |
|
[9]
|
WRIGHT W H,SONEK G J,BERNS M W.Parametric study of the forces on microspheres held by optical tweezers[J].Appl Opt,1994,33(9):1735-1748. |
|
[10]
|
CHIOU A.Photorefractive phase-conjugate optics for optical image processing,trapping,and manipulation of microscopic objects[J].Devices and Applications,1999,87(1):2072-2074. |
|
[11]
|
ROHRBACH A,KRESS H.Three-dimensional tracking of small spheres in focused laser beams:influence of the detection angular aperture[J].Opt Lett,2003,37(5):411-413. |
|
[12]
|
BERG-SORENSEN K,FLYVBJERG H.Power spectrum analysis for optical tweezers[J].Science Instrument,2004,75(10):594-612. |
|
[13]
|
LUO Y Q,WANG W P,LI J F.Investigation of an optical limiting mechanism in carbon nanotube suspension[J].Laser Technology,2007,31(1):46-48(in Chinese). |
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