Abstract
We demonstrate the use of a rotating off-axis optical phase singularity, generated through an intentional misalignment of a high optical efficiency spiral phase plate (SPP), to optically steer both high and low index microparticles trapped within the optical beam in a controlled manner. This intentional misalignment of the SPP creates an asymmetrical intensity beam pattern due to the optical vortex being displaced from the centre of the beam propagation axis. By using this optical beam pattern, we propose that a cell can be trapped by an optical beam of matching beam diameter while its internal structure can be manipulated by the off-axis optical vortex.
| Original language | English |
|---|---|
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Journal of Optics A: Pure and Applied Optics |
| Volume | 7 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2005 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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Optical steering of high and low index microparticles by manipulating an off-axis optical vortex. / Lee, W. M.; Ahluwalia, B. P.S.; Yuan, X. C.; Cheong, W. C.; Dholakia, K.
In: Journal of Optics A: Pure and Applied Optics, Vol. 7, No. 1, 01.01.2005, p. 1-6.Research output: Contribution to journal › Article
TY - JOUR
T1 - Optical steering of high and low index microparticles by manipulating an off-axis optical vortex
AU - Lee, W. M.
AU - Ahluwalia, B. P.S.
AU - Yuan, X. C.
AU - Cheong, W. C.
AU - Dholakia, K.
PY - 2005/1/1
Y1 - 2005/1/1
N2 - We demonstrate the use of a rotating off-axis optical phase singularity, generated through an intentional misalignment of a high optical efficiency spiral phase plate (SPP), to optically steer both high and low index microparticles trapped within the optical beam in a controlled manner. This intentional misalignment of the SPP creates an asymmetrical intensity beam pattern due to the optical vortex being displaced from the centre of the beam propagation axis. By using this optical beam pattern, we propose that a cell can be trapped by an optical beam of matching beam diameter while its internal structure can be manipulated by the off-axis optical vortex.
AB - We demonstrate the use of a rotating off-axis optical phase singularity, generated through an intentional misalignment of a high optical efficiency spiral phase plate (SPP), to optically steer both high and low index microparticles trapped within the optical beam in a controlled manner. This intentional misalignment of the SPP creates an asymmetrical intensity beam pattern due to the optical vortex being displaced from the centre of the beam propagation axis. By using this optical beam pattern, we propose that a cell can be trapped by an optical beam of matching beam diameter while its internal structure can be manipulated by the off-axis optical vortex.
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U2 - 10.1088/1464-4258/7/1/001
DO - 10.1088/1464-4258/7/1/001
M3 - Article
AN - SCOPUS:12344325581
VL - 7
SP - 1
EP - 6
JO - Journal of Optics
JF - Journal of Optics
SN - 2040-8978
IS - 1
ER -