Abstract: A sealed exhaust chemical oxygen-iodine laser (SECOIL) employing a sealed exhaust system (SES) is described. The SES is capable of selectively condensing and cryosorbing various chemical species contained in the laser-exhaust gas. Additionally, a condensable diluent is employed. The SES is configured so that the diluent and other condensables can be removed in a first stage with a high temperature condensing bed, while the oxygen can then be removed in a second stage in a low temperature sorbing bed. The result is a reduction in the weight, volume, and power consumption of the SECOIL system, especially the SES component thereof.

Abstract: A laser resonator and an associated method are provided which produce a laser beam having a relatively uniform intensity profile following a single pass through a single laser cavity. The laser resonator includes a laser cavity through which a chemical medium flows from an upstream end to a downstream end. The laser resonator also includes a first optical element, typically termed a secondary mirror, for directing an expanding laser beam across the cavity. The laser resonator also includes a second optical element disposed opposite the first optical element relative to the laser cavity. Typically, the second optical element is a set of primary mirrors and, more particularly, a pair of primary mirrors for both collimating and spatially inverting the laser beam relative to the predetermined flow direction of the chemical medium through the laser cavity. Once the expanded laser beam has been collimated and spatially inverted, the laser beam is redirected across the laser cavity.

Abstract: A nozzle for mixing of two reacting fluids wherein the first reactant, flowing across the nozzle, exhibits a variation in reactivity towards the second fluid, introduced through the nozzle and mixing and reacting with the first fluid within the nozzle, and wherein the nozzle is configured to permit this second fluid to be introduced in a way as to compensate for the variation in reactivity and to produce uniform reactant mixture from the two fluids.