DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
PUMPING POWER CONSIDERATIONS IN AN OPTICAL MASER
STANFORD UNIV CALIF MICROWAVE LAB
The theoretical efficiency of various pumping power systems that have been adopted in optical masers is studied. A thermodynamical method is used to calculate the power transferred from the flashtube to the maser material. A general expression is obtained which allows one to calculate the total power and the power per unit area of the flashtube needed, for a given power absorption by the active rod. When the rod is surrounded by a sheath with an index of refraction equal to or greater than that of the rod, the power per unit area of the flashtube is lowered at best by the factor n, where n is the index of refraction of the rod. The total power required from the flashtube is not affected by the sheath. The most efficient case occurs when the pumping power is allowed to enter the active rod from all directions. In this case the necessary power per unit area of the flashtube is reduced by a factor n squared with respect to the case of a simple rod. Author