maser amplifier

maser amplifier

(may -zer) A type of negative-resistance amplifier in which amplification is achieved by stimulating excited molecules to release photons in phase with the passing radiation. Amplifiers of this type have extremely low noise figures, limited in practice by losses in the input and output circuits, and they therefore find application in radio telescopes at microwave frequencies.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

maser amplifier

[′mā·zər ′am·plə‚fīər]
(electronics)
A maser which is used to increase the power produced by another maser.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In 1983, it was estimated that it would cost $25 M to implement maser amplifiers in the VLA.