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Proceedings Paper

New modified Michelson's interferometer and its applications in metrology as new miniaturized absolute portable gravimeter
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Paper Abstract

We propose a modified Michelson's interferometer with some applications in dimensional metrology. The configuration of a Michelson's interferometer using corner cubes instead of pane mirrors is further modified in a rectangular parallelogram. A double prism is introduced in one of the branches of the device in order to obtain a precision of (lambda) /4 and an accuracy of +/- (lambda) /8. The same scheme can be applied to develop absolute portable gravimeters. We present an interferometer version enabling reducing the free fall dropping height less than 25 cm, which is half size of any available device of the same class. Another version of the same interferometer enables a theoretical doubling of the dropping rate and a reduced dropping length with an effective improvement of the measurement precision of g. This solution may lead to a portable absolute dynamic gravimeter. The paper discusses the mathematical model in terms of transfer function of 'g' and describes the modified Michelson's interferometer with a 'futuristic' solution for a dynamic portable absolute gravimeter.

Paper Details

Date Published: 22 October 2001
PDF: 11 pages
Proc. SPIE 4401, Recent Developments in Traceable Dimensional Measurements, (22 October 2001); doi: 10.1117/12.445639
Show Author Affiliations
Muhammad Muddassir Gualini, Pakistan Institute of Lasers and Optics (Pakistan)

Published in SPIE Proceedings Vol. 4401:
Recent Developments in Traceable Dimensional Measurements
Jennifer E. Decker; Nicholas Brown, Editor(s)

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