Application of LCoS to dynamical focusing in an optical system

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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 moving spot to track an identif...

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Autores principales:	Goldin, M., Díaz Costanzo, G., Martínez, O.E., Iemmi, C., Ledesma, S.
Formato:	Documento de conferencia publishedVersion
Publicado:	2008
Materias:	Beam Beam intensity Beam shaping Filters Image forming and processing Profile
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0094243X_v992_n_p146_Goldin https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_0094243X_v992_n_p146_Goldin_oai
Aporte de:	Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires

id	I28-R145-paper_0094243X_v992_n_p146_Goldin_oai
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spelling	I28-R145-paper_0094243X_v992_n_p146_Goldin_oai2024-08-16 Goldin, M. Díaz Costanzo, G. Martínez, O.E. Iemmi, C. Ledesma, S. 2008 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 moving spot to track an identified sample is required. We introduce here an optical system that can perform, this tracking without mechanical components. The system, is based on the use of a high resolution liquid crystal on silicon (LCoS) device working as a mostly phase wave front modulator. The additional advantage of this system is performing the motion of the spot at video rate. In general, these devices produce coupled phase and amplitude modulation responses as a function of the applied voltage. This coupling effect deteriorates the response of those ideal optical elements designed as phase only or amplitude only functions. By means of an elliptical polarization light we can reduce the amplitude modulation and improve the phase modulation. We have experimentally found a configuration where the amplitude is almost constant while the phase reaches a high modulation. For this configuration we show how the spot can be moved through, focus plane by means of linear phases, or displaced out of this plane by using a quadratic phase. © 2008 American Institute of Physics. Fil:Martínez, O.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Iemmi, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ledesma, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_0094243X_v992_n_p146_Goldin info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar AIP Conf. Proc. 2008;992:146-151 Beam Beam intensity Beam shaping Filters Image forming and processing Profile Application of LCoS to dynamical focusing in an optical system info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_0094243X_v992_n_p146_Goldin_oai
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-145
collection	Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic	Beam Beam intensity Beam shaping Filters Image forming and processing Profile
spellingShingle	Beam Beam intensity Beam shaping Filters Image forming and processing Profile Goldin, M. Díaz Costanzo, G. Martínez, O.E. Iemmi, C. Ledesma, S. Application of LCoS to dynamical focusing in an optical system
topic_facet	Beam Beam intensity Beam shaping Filters Image forming and processing Profile
description	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 moving spot to track an identified sample is required. We introduce here an optical system that can perform, this tracking without mechanical components. The system, is based on the use of a high resolution liquid crystal on silicon (LCoS) device working as a mostly phase wave front modulator. The additional advantage of this system is performing the motion of the spot at video rate. In general, these devices produce coupled phase and amplitude modulation responses as a function of the applied voltage. This coupling effect deteriorates the response of those ideal optical elements designed as phase only or amplitude only functions. By means of an elliptical polarization light we can reduce the amplitude modulation and improve the phase modulation. We have experimentally found a configuration where the amplitude is almost constant while the phase reaches a high modulation. For this configuration we show how the spot can be moved through, focus plane by means of linear phases, or displaced out of this plane by using a quadratic phase. © 2008 American Institute of Physics.
format	Documento de conferencia Documento de conferencia publishedVersion
author	Goldin, M. Díaz Costanzo, G. Martínez, O.E. Iemmi, C. Ledesma, S.
author_facet	Goldin, M. Díaz Costanzo, G. Martínez, O.E. Iemmi, C. Ledesma, S.
author_sort	Goldin, M.
title	Application of LCoS to dynamical focusing in an optical system
title_short	Application of LCoS to dynamical focusing in an optical system
title_full	Application of LCoS to dynamical focusing in an optical system
title_fullStr	Application of LCoS to dynamical focusing in an optical system
title_full_unstemmed	Application of LCoS to dynamical focusing in an optical system
title_sort	application of lcos to dynamical focusing in an optical system
publishDate	2008
url	http://hdl.handle.net/20.500.12110/paper_0094243X_v992_n_p146_Goldin https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_0094243X_v992_n_p146_Goldin_oai
work_keys_str_mv	AT goldinm applicationoflcostodynamicalfocusinginanopticalsystem AT diazcostanzog applicationoflcostodynamicalfocusinginanopticalsystem AT martinezoe applicationoflcostodynamicalfocusinginanopticalsystem AT iemmic applicationoflcostodynamicalfocusinginanopticalsystem AT ledesmas applicationoflcostodynamicalfocusinginanopticalsystem
_version_	1809356805395972096

Application of LCoS to dynamical focusing in an optical system

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