Accession Number : AD0643230

Title :   NOISE PROPERTIES OF MICROWAVE MASER OSCILLATORS.

Descriptive Note : Technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS CRUFT LAB

Personal Author(s) : Dmitrevsky,Sergej

Report Date : JUL 1966

Pagination or Media Count : 98

Abstract : Rate equations describing transient behavior of the photon number of a maser oscillator exhibit damped sinusoidal solutions if longitudinal relaxation times are sufficiently long. The resonant nature of the transient is reflected in the shape of the noise power spectrum of the oscillator. The level of the noise can be described in terms of correlation functions satisfying differential equations. The form of the solutions of these equations allows one to interpret the oscillator noise in terms of a shot effect of the photon number and level populations. Experimental verification of the theoretical behavior has been carried out on a series of ruby microwave masers. The results obtained have been applied to establish limits of the sensitivity of ESR spectrometers utilizing maser oscillators. (Author)

Descriptors :   (*MASERS, *MICROWAVE OSCILLATORS), (*NOISE(RADIO), MASERS), RUBY, MATHEMATICAL ANALYSIS, EQUATIONS OF MOTION, SPECTRUM ANALYZERS

Subject Categories : Electrical and Electronic Equipment
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE