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  A phase-modulated interferometer for high-precision spectroscopy

Wicht, A., Müller, M., Rinkleff, R.-H., Rocco, A., Danzmann, K., & Quetschke, V. (2000). A phase-modulated interferometer for high-precision spectroscopy. Applied Physics B-Lasers and Optics, 70(6), 821-831. doi:10.1007/s003400050015.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-57DF-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-57E0-9
Genre: Journal Article

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 Creators:
Wicht, A., Author
Müller, M., Author
Rinkleff, Rolf-Hermann, Author
Rocco, A.1, 2, Author
Danzmann, Karsten2, Author              
Quetschke, Volker, Author
Affiliations:
1AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24009              
2Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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 Abstract: We present a novel spectroscopic method based on a phase-modulated interferometer which is suitable for the high-precision measurement of absorption and index of refraction profiles. A comparison with competing methods, that is with interferometry and mil spectroscopy, is given. The combination of these two methods, the phase-modulated interferometer, is shown to be best suited for experiments aiming at the realization of novel optical media, for example media exhibiting an ultra-large index of refraction or strong dispersion without absorption. The theory of operation and a theoretical and experimental signal-to-noise analysis are presented. Current detection limits for optical phase shift and relative absorption are 1.1 x 10(-5) rad/root Hz and 2x10(-5)/root Hz, respectively. We demonstrate the effectiveness of this novel technique by investigating the absorption and index of refraction profiles of the 4s(2) S-1(0) --> 4s4p P-1(1) resonance transition at 423 nm in calcium

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Language(s): eng - English
 Dates: 2000
 Publication Status: Published in print
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 Identifiers: eDoc: 3571
DOI: 10.1007/s003400050015
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Title: Applied Physics B-Lasers and Optics
Source Genre: Journal
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Pages: - Volume / Issue: 70 (6) Sequence Number: - Start / End Page: 821 - 831 Identifier: ISSN: 1432-0649