High-speed complex phase retrieval of a Gaussian beam propagating through controlled optical turbulence

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dc.coverageDOI: 10.1117/12.2636020
dc.creatorPeters, Eduardo
dc.creatorSepúlveda, Marco
dc.creatorScherz, Pablo
dc.creatorNuñez, Leandro
dc.creatorPérez, Darío G.
dc.date2022
dc.date.accessioned2025-11-18T19:48:56Z
dc.date.available2025-11-18T19:48:56Z
dc.description<p>Optical turbulence induces distortions in amplitude and phase in any beam propagating through it, resulting in beam spreading, beam wandering, and irradiance fluctuations among other effects. Due to the dynamic nature of these effects, the complex field reconstruction of a perturbed beam presents a great experimental challenge. Interferometric wavefront reconstruction techniques require very sophisticated assemblies prone to alignment errors due to their high sensitivity to environmental disturbances. This hinders its experimental implementation. New complex phase retrieval methods overcome most of the limitations of interferometric methods: they are suitable for amplitude or phase objects (or both) and their reconstruction algorithms—based on propagation equations—make unnecessary any a-priori knowledge of the beam to be reconstructed. We propose an experimental implementation of a complex phase retrieval technique for the characterization of Gaussian beams propagating through turbulence. This technique is based on binary amplitude modulation using a digital micro-mirror device (DMD) which has proven to be suitable for dynamic applications. To our knowledge, this is the first experimental high-speed complex wavefront reconstruction of optical beams—by binary amplitude modulation—through controlled real turbulence. This experiment represents the first step in our research focused on understanding optical turbulence from an experimental point of view.</p>eng
dc.descriptionOptical turbulence induces distortions in amplitude and phase in any beam propagating through it, resulting in beam spreading, beam wandering, and irradiance fluctuations among other effects. Due to the dynamic nature of these effects, the complex field reconstruction of a perturbed beam presents a great experimental challenge. Interferometric wavefront reconstruction techniques require very sophisticated assemblies prone to alignment errors due to their high sensitivity to environmental disturbances. This hinders its experimental implementation. New complex phase retrieval methods overcome most of the limitations of interferometric methods: they are suitable for amplitude or phase objects (or both) and their reconstruction algorithms—based on propagation equations—make unnecessary any a-priori knowledge of the beam to be reconstructed. We propose an experimental implementation of a complex phase retrieval technique for the characterization of Gaussian beams propagating through turbulence. This technique is based on binary amplitude modulation using a digital micro-mirror device (DMD) which has proven to be suitable for dynamic applications. To our knowledge, this is the first experimental high-speed complex wavefront reconstruction of optical beams—by binary amplitude modulation—through controlled real turbulence. This experiment represents the first step in our research focused on understanding optical turbulence from an experimental point of view.spa
dc.identifierhttps://investigadores.uandes.cl/en/publications/1d4a7f93-4b56-4d96-81e0-53d9266c0233
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/55811
dc.languageeng
dc.publisherSPIE
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceStein, Karin, Gladysz, Szymon (Ed.), Environmental Effects on Light Propagation and Adaptive Systems V, SPIE.
dc.subjectatmospheric turbulence
dc.subjectcomplex-phase reconstruction
dc.titleHigh-speed complex phase retrieval of a Gaussian beam propagating through controlled optical turbulenceeng
dc.typeConference contributioneng
dc.typeContribución a la conferenciaspa
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