The design of a new far ultraviolet interferometer for ionospheric spectroscopy
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Authors
Nichols, James Warren
Subjects
Ionosphere
Ultraviolet Spectroscopy
Interferometer
Ultraviolet Spectroscopy
Interferometer
Advisors
Cleary, David D.
Davis, David Scott
Date of Issue
1990-12
Date
December 1990
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
A new far ultraviolet interferometer for ionospheric spectroscopy was designed and tested. The design uses a concave spherical grating in an off-plane Rowland circle configuration. Wave fronts are split into zero and negative first order diffractions, reflected by plane mirrors and recombined by the spherical grating to produce interference fringes. Use of a single concave grating reduces the total number of reflections to three for each path. The off-plane configuration was required to obtain equal path lengths. The ruling density was selected to eliminate other diffracted orders. The design was tested first by verifying the feasibility of recombining a divided wave front using two similar flat transmission gratings. Next a concave grating interferometer using a helium neon laser as the source. The design produced a high quality fringe pattern suitable for spectroscopic analysis.
Type
Thesis
Description
Series/Report No
Department
Department of Physics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
vii, 68 p. ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.