hydrogen maser


Also found in: Acronyms.

hydrogen maser

[′hī·drə·jən ′mā·zər]
(physics)
A maser in which hydrogen gas is the basis for providing an output signal with a high degree of stability and spectral purity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
A 100 MHz signal from a hydrogen maser was used to modulate the injection current of a 1300 nm Fabry-Perot transmitter directly.
Long term performance is equal to UTC at 5x[10.sup.-14] offset over 3...33 days as measured against an ensemble of active hydrogen masers and NIST + NPL traceable by satellite time transfer techniques.