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Title: Development of a Fabry-Perot Cavity Stabilization System
Authors: Tanya Das
Issue Date: Jul-2016
Publisher: Indian Institute of Astrophysics
Citation: M. Tech. Thesis, University of Calcutta, Calcutta
Abstract: High precision spectroscopy is bounded by two major challenges, first being instrument instability, mainly caused by temperature and pressure variations, and second is due to the limitations of traditional calibration methods. Spectrographs require suitable calibration sources for precise Radial velocity (RV) measurements. Emission lamps do not provide homogenous line distributions and intensities, giving limited wavelength coverage and spectrum contamination from different sources. A wavelength calibrator based on Fabry-Perot interferometer can provide stable transmission lines covering full wavelength range and can achieve 1-10 m/s RV precision. A vacuum enclosure has been designed and constructed for the Fabry-Perot to be mounted in to minimize pressure fluctuations effects. Enclosure temperature is being controlled using a Proportional-Integral (PI) controller to provide thermal stability.
Description: Thesis Supervisor Dr. Ravinder Kumar Banyal
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Appears in Collections:Integrated M.Tech-Ph.D (Tech.)

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