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liquid laser in air

14.07.2015

Dye lasers are often referred to as "liquid" lasers because they use solutions of organic dyes as the laser material. This name smoothly migrated to the US Advanced Defense Research Projects Agency (DARPA) program High Energy Liquid Laser Area Defense System (HELLADS) - "High Energy Liquid Laser Protection System", and it remained there. This is despite the fact that the development of General Atomics was a combination of a solid-state laser with a high energy density and a dye laser that allows you to control the temperature.

The program began about ten years ago and set the goal of creating a 150 kW laser to destroy missiles and projectiles, which would weigh no more than 5 kg per kilowatt of energy and take up no more than 3 cubic meters in volume so that it could be placed in an aircraft. By 2007, a 15 kW laser had been built in the lab, and in April of this year, General Atomics conducted successful acceptance testing of the all-electric HELLADS system weighing less than 907 kg (i.e. about 6 kg per kilowatt) and with a volume of 1,3 x 0,4 x 0,5 m, powered by a lithium-ion battery. During the 30-second demonstration, the beam quality remained unchanged, thus confirming the possibility of maintaining the quality of the electric pump laser beam at a power of more than 50 kW.

Now the laser, or rather, its so far a demonstration sample for ground placement, will go for testing at the White Sands test site in New Mexico. The 8287 km test site is the largest area in the United States owned by the Department of Defense. General Atomics expects by 2018 to begin installing HELLADS lasers on its own Avenger-type drones, previously well known under the name Predator C.

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