Multidirectional Holographic Interferometer (MHOI) With Fiber Optics For Study Of Crystal Growth In Microgravity

Filomena Solitro; Laura Gatti; Federico Bedarida; Gian Antonio Dall'Aglio; Leonardo Michetti

doi:10.1117/12.962732

25 April 1990 Multidirectional Holographic Interferometer (MHOI) With Fiber Optics For Study Of Crystal Growth In Microgravity

Filomena Solitro, Laura Gatti, Federico Bedarida, Gian Antonio Dall'Aglio, Leonardo Michetti

Author Affiliations +

Proceedings Volume 1162, Laser Interferometry: Quantitative Analysis of Interferograms: Third in a Series; (1990) https://doi.org/10.1117/12.962732
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

This paper describes a technologically advanced version of a multidirectional holographic interferometer (MHOI). A new MHOI set-up with fiber optics is under development in order to decrease the size of the experimental apparatus while maintaining a good optical output. The use of fibers has several advantages such as: more flexible arrangements less optical equipment needed a wide total angle of view same intensities for all object rays. The first step in creating a fiber optics MHOI set-up is to build a monodirectional holographic interferometer. Some tests have already been performed using this innovative optical fiber device providing one-directional holographic interferometry. A new MHOI set-up scheme and expected performances are'presented. In this new scheme six object rays are used to illuminate the sample, and six reference rays record the image on the holographic plate. The spacing between object rays is 30°, and the total view angle is 150° . The aim of this work is the development of a multi-user facility for space experiments. MHOI could be used not only for crystal growth experiments, but also for any experiment involving transparent media in a quasi-equilibrium state.

Citation Download Citation

Filomena Solitro, Laura Gatti, Federico Bedarida, Gian Antonio Dall'Aglio, and Leonardo Michetti "Multidirectional Holographic Interferometer (MHOI) With Fiber Optics For Study Of Crystal Growth In Microgravity", Proc. SPIE 1162, Laser Interferometry: Quantitative Analysis of Interferograms: Third in a Series, (25 April 1990); https://doi.org/10.1117/12.962732

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