Accession Number : ADD008768

Title :   Laser Gas Temperature Control and Spacial Equalizer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Marcy,Robert D

Report Date : 21 Jul 1981

Pagination or Media Count : 4

Abstract : This invention relates to a system for substantially eliminating undesirable temperature transients and spacial gradients in the laser gas flow through a laser cavity having a large system heat exchanger positioned upstream of the cavity which provides an exit gas temperature T sub i + or - approximately 5 degrees above the desired cavity inlet temperature wherein the large heat exchanger has a time dependent tolerance of + or - 5 degrees. A trimmer heat exchanger is positioned between the large heat exchanger and the cavity. A flow of saturated liquid coolant through the trimmer heat exchanger from a tank is provided by a constant displacement pump, with the flow rate of the coolant set to remove a maximum heat load corresponding to a 10 degrees temperature drop in the gas flow through the trimmer heat exchanger. The saturated liquid temperature and pressure of the liquid in the tank is adjusted to the desired level by controlling the pressure in the tank with an absolute pressure regulator.

Descriptors :   *Patents, *Gas lasers, *Laser gases, *Heat exchangers, *Temperature control, Coolants, Laser cavities, Gas flow, Inlets, Inventions

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE