Application of LCoS to dynamical focusing in an optical system
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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2008
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v992_n_p146_Goldin http://hdl.handle.net/20.500.12110/paper_0094243X_v992_n_p146_Goldin |
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paper:paper_0094243X_v992_n_p146_Goldin2023-06-08T15:09:26Z Application of LCoS to dynamical focusing in an optical system Martínez, Oscar Eduardo Iemmi, Claudio César Ledesma, Silvia Adriana Beam Beam intensity Beam shaping Filters Image forming and processing Profile 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. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v992_n_p146_Goldin http://hdl.handle.net/20.500.12110/paper_0094243X_v992_n_p146_Goldin |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (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 Martínez, Oscar Eduardo Iemmi, Claudio César Ledesma, Silvia Adriana 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. |
| author |
Martínez, Oscar Eduardo Iemmi, Claudio César Ledesma, Silvia Adriana |
| author_facet |
Martínez, Oscar Eduardo Iemmi, Claudio César Ledesma, Silvia Adriana |
| author_sort |
Martínez, Oscar Eduardo |
| 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 |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v992_n_p146_Goldin http://hdl.handle.net/20.500.12110/paper_0094243X_v992_n_p146_Goldin |
| work_keys_str_mv |
AT martinezoscareduardo applicationoflcostodynamicalfocusinginanopticalsystem AT iemmiclaudiocesar applicationoflcostodynamicalfocusinginanopticalsystem AT ledesmasilviaadriana applicationoflcostodynamicalfocusinginanopticalsystem |
| _version_ |
1768545367450714112 |