22 May 2002 International Space Station: state of the art and novel possibilities for onboard research by means of holography and speckle metrology
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Proceedings Volume 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2002) https://doi.org/10.1117/12.468148
Event: Fifth International Conference on Vibration Measurements by Laser Techniques, 2002, Ancona, Italy
Abstract
Review of current and emerging methods ofholography and speckle metrology is given. Advanced holographic rapid access system (RAS) is presented. It is very simple, compact, portable and user-friendly. Holographic RAS is elegantly devised and requires minimal hardware. Holographic RAS has several modifications and spin-offs. Ultra high resolution silver halide media are used in this RAS. The unique features of holographic RAS enable the possibility to avoid any liquid baths for photoprocessing ofthe medium and to work in real time in situ. For the first time it is possible to obtain holograms, holographic interferogams and specklegrams outdoors in any brightly lit natural environments, including sunlit ones. It means that even extremely strong polychromatic exposures can be tolerated during rapid production of a hologram. Onboard research by means of holography and speckle metrology is analysed. The innovative holographic RAS suits ideally for monitoring of various physical processes, studying of vibrations and static deformations, testing of microelectronics and MEMS in microgravity. A novel very small holographic device is presented. It is portable device with no lenses and no alignment problems. The hardware is so simple that it can be operated by an astronaut having practically no skill in optics. One of the early variants of holographic RAS invented by this author was used to obtain the first ever holograms and holographic interferograms ofdifferent physical phenomena aboard navigating spacecraft. Experimental data properly illustrating novel vast possibilities for onboard space research are presented. The photographs from holographic interferograms and holograms are shown. Holographic images obtained in extremely unpromising outdoor environments are given.
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Valery Petrov, "International Space Station: state of the art and novel possibilities for onboard research by means of holography and speckle metrology", Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); doi: 10.1117/12.468148; https://doi.org/10.1117/12.468148
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