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

Eduardo Peters, Marco Sepúlveda, Pablo Scherz, Leandro Nuñez, Darío G. Pérez

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

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.

Idioma originalInglés
Título de la publicación alojadaEnvironmental Effects on Light Propagation and Adaptive Systems V
EditoresKarin Stein, Szymon Gladysz
EditorialSPIE
ISBN (versión digital)9781510655355
DOI
EstadoPublicada - 2022
Publicado de forma externa
EventoEnvironmental Effects on Light Propagation and Adaptive Systems V 2022 - Berlin, Alemania
Duración: 6 sept. 2022 → …

Serie de la publicación

NombreProceedings of SPIE - The International Society for Optical Engineering
Volumen12266
ISSN (versión impresa)0277-786X
ISSN (versión digital)1996-756X

Conferencia

ConferenciaEnvironmental Effects on Light Propagation and Adaptive Systems V 2022
País/TerritorioAlemania
CiudadBerlin
Período6/09/22 → …

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