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Modeling the misalignment error in a solar system simulator for rotationally shearing interferometer

JUN
24
2019
24. JUN 2019

Invited Talk Hall ICM - Internationales Congress Center München SPIE Optical Metrology > Modeling Aspects in Optical Metrology VII > Interferometry I

14:00-14:30 h | ICM - Internationales Congress Center München ICM Room 12b

Subjects: Optical Measurement Systems / Optical Metrology

Chairman: Bernd Bodermann (, Physikalisch-Technische Bundesanstalt)

Type: Invited Talk

Speech: English

Abstract: Within the last 25 years a number of models were conceptualized that allow a credible assumption that a solar system might exist several light years away on the basis of the dependence of the detected radiation on space and time in the vicinity of the Earth. We proposed a novel optical technique of planet detection incorporating a rotating rotational shearing interferometer [1]. We are setting up a solar system simulator using two laser beams with a known degree of misalignment. Using rotationally shearing interferometry in laboratory we were able to detect and interpret fringes corresponding to a simulated solar system at 1 parsec. We are currently designing an improved detection instrumental layout with a limiting aperture larger than the earlier one of 2 cm. We are interested in seeing more distant stars to examine them for the presence of a potential invisible companion. To achieve this goal, we are performing system-level simulations to determine the degree of misalignment between two collimated laser beams that simulate radiation originating at the star and the planet, as point sources at infinity. This modeling will result in the identification of key parameters of the rotational shearing interferometer system, in particular the aperture of the dove prism, a critical component of a rotationally shearing interferometer. 1. M. S. Scholl, “Signal detection by an extra-solar-system planet detected by a rotating rotationally-shearing interferometer,” JOSA A 13(7), 1584 (1996). http://doi.org/10.1364/JOSAA.13.001584

Informations

Marija Strojnik Scholl

Location

Eingang
Nord-West
ICM
Eingang
Nord
Eingang
West
Atrium
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Ost
Conference
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Freigelände
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