METHOD FOR INITIATING GAS-DYNAMIC LASER Russian patent published in 2006 - IPC H01S3/22 

FIELD: quantum electronics; large gas-dynamic laser units burning combustion products.

SUBSTANCE: in order to initiate gas-dynamic laser, working-medium components including fuel, oxidizer and ballast component are supplied to gas producer. Oxidizer and ballast component are preheated in regenerative heat exchangers. Components are mixed up and mixture is ignited. Combustion products are pumped through gas-dynamic channel wherein part of working-medium heat energy is converted by means of resonator into laser radiation energy. Spent working medium is exhausted into atmosphere and supply of components is ceased. In the process time taken to supply components and to pump combustion products exceeds that needed to fill up gas-dynamic channel. Working-medium flowrate and feed time are set to satisfy following condition V^1/3·Δρ/ρ > 10 (in meters), where V is volume of working medium used; Δρ is difference in atmosphere and exhausted working medium densities; ρ is atmosphere density. Upon ceasing fuel supply ballast component and oxidizer are pumped for time exceeding that required to fill up gas-dynamic channel.

EFFECT: improved environmental friendliness.

1 cl, 4 dwg