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Electrical control of shape of laser beam using axially symmetric liquid crystal cells |
Applied Optics, Vol. 51, Issue 10, pp. 1540-1545 (2012)
http://dx.doi.org/10.1364/AO.51.001540
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Abstract
This work demonstrates the electrical tuning of laser beam shape using an axially symmetric dye-dope liquid crystal (ASDDLC) device that is fabricated using a photo-alignment method. Various beam shapes can be obtained by linearly polarized Gaussian laser beams through an ASDDLC device under various applied voltages. The far-field intensity patterns generated by laser beams of selected shapes under various applied voltages are simulated, and the results are consistent with experiment. A rotatable petal-shaped beam is obtained by controlling the polarization of the output donut-shaped beam. The tenability of beam shape of light with a wavelength of 1064 nm, which is commonly used in biomedical applications, is also demonstrated.
© 2012 Optical Society of America
OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(160.3710) Materials : Liquid crystals
(220.1140) Optical design and fabrication : Alignment
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: October 21, 2011
Revised Manuscript: December 23, 2011
Manuscript Accepted: December 30, 2011
Published: March 29, 2012
Citation
Shih-Wei Ko, Tsung-Hsien Lin, Yao-Han Huang, Hung-Chang Jau, Shu-Chun Chu, Yan-Yu Chen, and Andy Y.-G. Fuh, "Electrical control of shape of laser beam using axially symmetric liquid crystal cells," Appl. Opt. 51, 1540-1545 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-10-1540
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