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Deep Nulling of laser light in a rotational shearing interferometer

Show simple item record Martin, S. R. en_US Serabyn, E. en_US Hardy, G. J. en_US 2004-09-17T18:16:21Z 2004-09-17T18:16:21Z 2002-08-22 en_US
dc.identifier.citation Astronomical Telescopes and Instrumentation en_US
dc.identifier.citation Kona, HI, USA en_US
dc.identifier.clearanceno 02-2099 en_US
dc.description.abstract There is great interest in techniques that potentially enable the direct detection of light from planets orbiting nearby stars. In one technique, nulling interfer~metry, the light from two or more separate telescopes can be destructively interfered to cancel the light from the star, allowing detection of the faint off-axis light from an orbiting planet or circumstellar disc. At the Jet Propulsion Laboratory, broadband white light nulls limited by dispersion effects have been previously reported. In this paper, we investigate other limiting effects using a monochromatic laser source. We report transient laser nulls as deep as 1 part in 10^6 and stabilized nulls as deep as 1 part in 10^5 at a wavelength of 633 nm and discuss the techniques used to obtain these nulls and the residual sources of stray light. We compare the measured performance of the rotational shearing interferometer with a theoretical model. en_US
dc.format.extent 3961187 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject.other nulling interferometry telescopes rotational shearing en_US
dc.title Deep Nulling of laser light in a rotational shearing interferometer en_US

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