Dynamic axial-position control of a laser-trapped particle by wave-front modification.
The axial position of a laser-trapped particle has been controlled by modification of the wave front by means of a membrane deformable mirror. The mirror gives wave-front modulation in terms of Zernike polynomials. By modulation of the Zernike defocus term we can modulate the particle position under...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2003
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| _version_ | 1826258180544397312 |
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| author | Ota, T Kawata, S Sugiura, T Booth, M Neil, M Juskaitis, R Wilson, T |
| author_facet | Ota, T Kawata, S Sugiura, T Booth, M Neil, M Juskaitis, R Wilson, T |
| author_sort | Ota, T |
| collection | OXFORD |
| description | The axial position of a laser-trapped particle has been controlled by modification of the wave front by means of a membrane deformable mirror. The mirror gives wave-front modulation in terms of Zernike polynomials. By modulation of the Zernike defocus term we can modulate the particle position under conditions of laser trapping. A polystyrene particle of 1-microm diameter was moved along the optical axis direction for a distance of 2370 nm in minimum steps of 55.4 nm. We also demonstrated particle oscillation along the optical axis by changing the focal position in a sinusoidal manner. From the frequency dependency of the amplitude of particle oscillation we determined the spring constant as 91.7 nN/m. |
| first_indexed | 2024-03-06T18:29:56Z |
| format | Journal article |
| id | oxford-uuid:0949e979-3c25-43c3-a7d8-a84249173195 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:29:56Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:0949e979-3c25-43c3-a7d8-a842491731952022-03-26T09:17:33ZDynamic axial-position control of a laser-trapped particle by wave-front modification.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0949e979-3c25-43c3-a7d8-a84249173195EnglishSymplectic Elements at Oxford2003Ota, TKawata, SSugiura, TBooth, MNeil, MJuskaitis, RWilson, TThe axial position of a laser-trapped particle has been controlled by modification of the wave front by means of a membrane deformable mirror. The mirror gives wave-front modulation in terms of Zernike polynomials. By modulation of the Zernike defocus term we can modulate the particle position under conditions of laser trapping. A polystyrene particle of 1-microm diameter was moved along the optical axis direction for a distance of 2370 nm in minimum steps of 55.4 nm. We also demonstrated particle oscillation along the optical axis by changing the focal position in a sinusoidal manner. From the frequency dependency of the amplitude of particle oscillation we determined the spring constant as 91.7 nN/m. |
| spellingShingle | Ota, T Kawata, S Sugiura, T Booth, M Neil, M Juskaitis, R Wilson, T Dynamic axial-position control of a laser-trapped particle by wave-front modification. |
| title | Dynamic axial-position control of a laser-trapped particle by wave-front modification. |
| title_full | Dynamic axial-position control of a laser-trapped particle by wave-front modification. |
| title_fullStr | Dynamic axial-position control of a laser-trapped particle by wave-front modification. |
| title_full_unstemmed | Dynamic axial-position control of a laser-trapped particle by wave-front modification. |
| title_short | Dynamic axial-position control of a laser-trapped particle by wave-front modification. |
| title_sort | dynamic axial position control of a laser trapped particle by wave front modification |
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