Accession Number:

AD0425083

Title:

TRANSMISSION LINE FORMULATION FOR OPTICAL MASER AMPLIFICATION,

Descriptive Note:

Corporate Author:

ARMY ELECTRONICS LABS FORT MONMOUTH N J

Report Date:

1963-11-01

Pagination or Media Count:

32.0

Abstract:

The optical maser amplifier is treated from the point of view of distributed lines. Transmission line analogs are set up generally for a system consisting of air, reflector, active medium, reflector and air again. It is postulated that in the active medium the growth of the wave can be looked upon as due to the presence of an effective negative conductivity. The problem is discussed for one medium active material three media, air, ruby, air, and the five-media case. Calculations are carried out showing that the five-layer case for special conditions can be reduced to a three-layer case. Equations for amplification and oscillation are developed which give the same results as Maimans criteria for oscillation and Smileys Fabry-Perot analysis for gain. The effective length of the line is estimated and one dimensional wave propagation is justified on the basis of the small spreading angle. Some of the more recent predictions of gain as a function of length and negative attenuation factor are explained in terms of the impedance matching of an electromagnetic wave in air to the impedance seen at the front surface of the crystal. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE