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Goldin, M.A.; Costanzo, G.D.; Martínez, O.E.; Iemmi, C.; Ledesma, S. "A new method for three-dimensional tracking using a liquid crystal on silicon (LCoS)" (2008) Journal of Optics A: Pure and Applied Optics. 10(10)
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Abstract:

Imaging of samples by different microscopy techniques has produced a relevant impact in the development of new diagnosis techniques in biology, medicine, and material science. In many biological applications, where the sample changes or moves during the observation, a dynamical focusing of the microscope is needed. To this end it is necessary to localize the sample previously to the refocusing process. We introduce here an optical system that can perform three-dimensional (3D) tracking without mechanical displacements. The system is based on the use of a high resolution liquid crystal on silicon (LCoS) device working as a phase mostly wavefront modulator. The additional advantage of this system is performing the motion of the spot at video rate. By using elliptical polarization we have experimentally found a configuration where the phase modulation is 2π and the intensity modulation has a variation less than 25%. For this configuration we show how the spot can be moved through the focus plane by means of linear phases, or displaced out of this plane by using a quadratic phase. © 2008 IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:A new method for three-dimensional tracking using a liquid crystal on silicon (LCoS)
Autor:Goldin, M.A.; Costanzo, G.D.; Martínez, O.E.; Iemmi, C.; Ledesma, S.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Palabras clave:Beam intensity; Beam profile; Beam shaping; Filters; Image forming and processing; Light sources; Liquid crystals; Optical systems; Three dimensional; Beam intensity; Beam profile; Beam shaping; Filters; Image forming and processing; Modulation
Año:2008
Volumen:10
Número:10
DOI: http://dx.doi.org/10.1088/1464-4258/10/10/104001
Título revista:Journal of Optics A: Pure and Applied Optics
Título revista abreviado:J Opt A Pure Appl Opt
ISSN:14644258
CODEN:JOAOF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14644258_v10_n10_p_Goldin

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Citas:

---------- APA ----------
Goldin, M.A., Costanzo, G.D., Martínez, O.E., Iemmi, C. & Ledesma, S. (2008) . A new method for three-dimensional tracking using a liquid crystal on silicon (LCoS). Journal of Optics A: Pure and Applied Optics, 10(10).
http://dx.doi.org/10.1088/1464-4258/10/10/104001
---------- CHICAGO ----------
Goldin, M.A., Costanzo, G.D., Martínez, O.E., Iemmi, C., Ledesma, S. "A new method for three-dimensional tracking using a liquid crystal on silicon (LCoS)" . Journal of Optics A: Pure and Applied Optics 10, no. 10 (2008).
http://dx.doi.org/10.1088/1464-4258/10/10/104001
---------- MLA ----------
Goldin, M.A., Costanzo, G.D., Martínez, O.E., Iemmi, C., Ledesma, S. "A new method for three-dimensional tracking using a liquid crystal on silicon (LCoS)" . Journal of Optics A: Pure and Applied Optics, vol. 10, no. 10, 2008.
http://dx.doi.org/10.1088/1464-4258/10/10/104001
---------- VANCOUVER ----------
Goldin, M.A., Costanzo, G.D., Martínez, O.E., Iemmi, C., Ledesma, S. A new method for three-dimensional tracking using a liquid crystal on silicon (LCoS). J Opt A Pure Appl Opt. 2008;10(10).
http://dx.doi.org/10.1088/1464-4258/10/10/104001