Two-wavelength whole-field interferometry setup for thermal lens study
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1117/12.978186 http://hdl.handle.net/11449/73839 |
Resumo: | In this paper we present a new approach for thermal lens analysis using a two-wavelength DSPI (Digital Speckle Pattern Interferometry) setup for wavefront sensing. The employed geometry enables the sensor to detect wavefronts with small phase differences and inherent aberrations found in induced lenses. The wavefronts was reconstructed by four-stepping fringe evaluation and branch-cut unwrapping from fringes formed onto a diffusive glass. Real-time single-exposure contour interferograms could be obtained in order to get discernible and low-spacial frequency contour fringes and obtain low-noise measurements. In our experiments we studied the thermal lens effect in a 4% Er-doped CaO-Al2O3 glass sample. The diode lasers were tuned to have a contour interval of around 120 μm. The incident pump power was longitudinally and collinearly oriented with the probe beams. Each interferogram described a spherical-like wavefront. Using the ABCD matrix formalism we obtained the induced lens dioptric power from the thermal effect for different values of absorbed pump power. © 2012 Copyright SPIE. |
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Two-wavelength whole-field interferometry setup for thermal lens studylasermulti-wavelengthSpecklethermal lenswavefront sensingAbsorbed pump powerDigital speckle pattern interferometryIncident pump powerLow-noise measurementsMultiwavelengthThermal lensThermal lens effectsWave-front sensingGlassHolographyInterferometryLasersWavefrontsIn this paper we present a new approach for thermal lens analysis using a two-wavelength DSPI (Digital Speckle Pattern Interferometry) setup for wavefront sensing. The employed geometry enables the sensor to detect wavefronts with small phase differences and inherent aberrations found in induced lenses. The wavefronts was reconstructed by four-stepping fringe evaluation and branch-cut unwrapping from fringes formed onto a diffusive glass. Real-time single-exposure contour interferograms could be obtained in order to get discernible and low-spacial frequency contour fringes and obtain low-noise measurements. In our experiments we studied the thermal lens effect in a 4% Er-doped CaO-Al2O3 glass sample. The diode lasers were tuned to have a contour interval of around 120 μm. The incident pump power was longitudinally and collinearly oriented with the probe beams. Each interferogram described a spherical-like wavefront. Using the ABCD matrix formalism we obtained the induced lens dioptric power from the thermal effect for different values of absorbed pump power. © 2012 Copyright SPIE.Instituto de Pesquisas Energéticas e Nucleares (CNEN-IPEN/SP), CEP 005508-000 São PauloLaboratório de Óptica Aplicada Faculdade de Tecnologia de São Paulo CEETEPS-UNESP, Pça Cel Fernando Prestes, 30, CEP 01124 060, São PauloLaboratório de Óptica Aplicada Faculdade de Tecnologia de São Paulo CEETEPS-UNESP, Pça Cel Fernando Prestes, 30, CEP 01124 060, São PauloInstituto de Pesquisas Energéticas e Nucleares (IPEN)Universidade Estadual Paulista (Unesp)Silva, Danilo M.Barbosa, Eduardo A. [UNESP]Wetter, Niklaus U.2014-05-27T11:27:18Z2014-05-27T11:27:18Z2012-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://dx.doi.org/10.1117/12.978186Proceedings of SPIE - The International Society for Optical Engineering, v. 8413.0277-786X1996-756Xhttp://hdl.handle.net/11449/7383910.1117/12.9781862-s2.0-84880081849Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of SPIE - The International Society for Optical Engineeringinfo:eu-repo/semantics/openAccess2021-10-23T21:37:56Zoai:repositorio.unesp.br:11449/73839Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:42:53.683769Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Two-wavelength whole-field interferometry setup for thermal lens study |
title |
Two-wavelength whole-field interferometry setup for thermal lens study |
spellingShingle |
Two-wavelength whole-field interferometry setup for thermal lens study Silva, Danilo M. laser multi-wavelength Speckle thermal lens wavefront sensing Absorbed pump power Digital speckle pattern interferometry Incident pump power Low-noise measurements Multiwavelength Thermal lens Thermal lens effects Wave-front sensing Glass Holography Interferometry Lasers Wavefronts |
title_short |
Two-wavelength whole-field interferometry setup for thermal lens study |
title_full |
Two-wavelength whole-field interferometry setup for thermal lens study |
title_fullStr |
Two-wavelength whole-field interferometry setup for thermal lens study |
title_full_unstemmed |
Two-wavelength whole-field interferometry setup for thermal lens study |
title_sort |
Two-wavelength whole-field interferometry setup for thermal lens study |
author |
Silva, Danilo M. |
author_facet |
Silva, Danilo M. Barbosa, Eduardo A. [UNESP] Wetter, Niklaus U. |
author_role |
author |
author2 |
Barbosa, Eduardo A. [UNESP] Wetter, Niklaus U. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Instituto de Pesquisas Energéticas e Nucleares (IPEN) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva, Danilo M. Barbosa, Eduardo A. [UNESP] Wetter, Niklaus U. |
dc.subject.por.fl_str_mv |
laser multi-wavelength Speckle thermal lens wavefront sensing Absorbed pump power Digital speckle pattern interferometry Incident pump power Low-noise measurements Multiwavelength Thermal lens Thermal lens effects Wave-front sensing Glass Holography Interferometry Lasers Wavefronts |
topic |
laser multi-wavelength Speckle thermal lens wavefront sensing Absorbed pump power Digital speckle pattern interferometry Incident pump power Low-noise measurements Multiwavelength Thermal lens Thermal lens effects Wave-front sensing Glass Holography Interferometry Lasers Wavefronts |
description |
In this paper we present a new approach for thermal lens analysis using a two-wavelength DSPI (Digital Speckle Pattern Interferometry) setup for wavefront sensing. The employed geometry enables the sensor to detect wavefronts with small phase differences and inherent aberrations found in induced lenses. The wavefronts was reconstructed by four-stepping fringe evaluation and branch-cut unwrapping from fringes formed onto a diffusive glass. Real-time single-exposure contour interferograms could be obtained in order to get discernible and low-spacial frequency contour fringes and obtain low-noise measurements. In our experiments we studied the thermal lens effect in a 4% Er-doped CaO-Al2O3 glass sample. The diode lasers were tuned to have a contour interval of around 120 μm. The incident pump power was longitudinally and collinearly oriented with the probe beams. Each interferogram described a spherical-like wavefront. Using the ABCD matrix formalism we obtained the induced lens dioptric power from the thermal effect for different values of absorbed pump power. © 2012 Copyright SPIE. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-12-01 2014-05-27T11:27:18Z 2014-05-27T11:27:18Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1117/12.978186 Proceedings of SPIE - The International Society for Optical Engineering, v. 8413. 0277-786X 1996-756X http://hdl.handle.net/11449/73839 10.1117/12.978186 2-s2.0-84880081849 |
url |
http://dx.doi.org/10.1117/12.978186 http://hdl.handle.net/11449/73839 |
identifier_str_mv |
Proceedings of SPIE - The International Society for Optical Engineering, v. 8413. 0277-786X 1996-756X 10.1117/12.978186 2-s2.0-84880081849 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings of SPIE - The International Society for Optical Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128690861637632 |