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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 2 — Feb. 1, 2012

Controlling the transverse momentum distribution of a light field via azimuth division of a hologram in holographic optical tweezers

Sheng-Yang Tseng and Long Hsu  »View Author Affiliations


Applied Optics, Vol. 50, Issue 34, pp. H62-H67 (2011)
http://dx.doi.org/10.1364/AO.50.000H62


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Abstract

This study proposes a method for creating a light field with controlled distribution of transverse momentum (TM) by displaying a hologram only in an azimuth region that centers at θ 0 and has a range of Δ θ of a spatial light modulator in holographic optical tweezers. This study utilized ray optics to analyze the TM of the resultant field, revealing that the direction of the TM is determined by the center angle of the azimuth region and that the magnitude of the TM is proportional to sin ( Δ θ / 2 ) , without regarding the intensity. The relationship was verified experimentally. In addition, this study demonstrated moving particles along a designed path and depleting particles by the fields.

© 2011 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(140.7010) Lasers and laser optics : Laser trapping
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Trapping

History
Original Manuscript: June 6, 2011
Revised Manuscript: September 3, 2011
Manuscript Accepted: September 9, 2011
Published: November 10, 2011

Virtual Issues
Vol. 7, Iss. 2 Virtual Journal for Biomedical Optics
Digital Holography and 3D Imaging 2011 (2011) Applied Optics

Citation
Sheng-Yang Tseng and Long Hsu, "Controlling the transverse momentum distribution of a light field via azimuth division of a hologram in holographic optical tweezers," Appl. Opt. 50, H62-H67 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-50-34-H62

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Supplementary Material


» Media 1: MOV (281 KB)     
» Media 2: MOV (3676 KB)     

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