A precise real-time wavemeter

Document Type

Article

Publication Date

11-1-1982

Abstract

A wavemeter has been built utilizing a coincidence start/stop fringe counting technique with a standard, simple division-of-amplitude type interferometer. We utilize a microprocessor to control the counting and to calculate and display, in real time, the unknown wavelength and to indicate when the result is outside of a preset tolerance (e.g. mode hop). This system, utilizing the coincidence technique, gives an enhancement in the precision of at least a factor of 15 over standard fringe counting techniques. © 1982.

Publication Source (Journal or Book title)

Nuclear Instruments and Methods In Physics Research

First Page

361

Last Page

364

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