laser Archive

energyPrototype for two beam laser fusion system within a decade if no major hurdles arise

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Dramatic advances in laser technology are close to making the two-laser approach feasible, and a spate of recent experiments around the world indicate that an ‘avalanche’ fusion reaction could be triggered in the trillionth-of-a-second blast from a petawatt-scale laser pulse, …

economic impactBreakthroughs could make commercial laser nuclear fusion through billion times improvements in yield

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Two recent scientific breakthroughs have opened a new way to laser fusion reactions according to startup HB11 Energy. It involves the reaction between hydrogen H and the boron isotope 11 (HB11) as uncompressed solid state fuel within an extremely high …

futureLaser arrays for propelling spaceships can also be used like nuclear cannon weapons

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A powerful 70 gigawatt laser propulsion system that could accelerate an 100 kilogram object over 122 seconds to 2% of light speed (6000 kilometers per second) would also be able to fire kinetic projectiles at nuclear weapon power. The goal …

futureDirected Energy Propulsion has made a lot of experimental progress

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Philip Lubin, University of California, Santa Barbara, Directed Energy for Interstellar Study Starting at 26 minutes of this video. They are making progress with laser locking over kilometer distances. They are making 2 gram starchip prototypes. they are looking at …

futureBeaming laser power to ion drive is 300-400 times more thrust than just laser photonic sail

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A 100 meter to 150 meter solar array that is attuned to the lithium ion will be about 70% efficient. JPL is working on the gridded lithium ion arrays to achieve 60,000 ISP. There is work on 60 meter deployable …

laserUS Air Force will ground demo a 50-120kw laser for a gunship in 2018 then airborne in 2020

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The US Air force Special ops command will ground demo a combat laser intended for a AC130 gunship in 2018 and then go airborne with shooting the laser a couple of years after that. Webb’s predecessor, then-Lt. Gen. Bradley Heithold, …

futureProof of concept lightsail material suitable for interstellar mission

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Proposals using large light sails like the Starshot Breakthrough, require mirrors with lateral sizes of 4 × 4 m2, thicknesses of 0.05 lambda, reflectivities of 90 %, ppm level optical absorption and a total mass of only 1 gram. Photonics …

laserRoom temperature molecular layer nanolaser opens up a lot of applications

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Researchers have built a nanolaser that uses only a single molecular layer, placed on a thin silicon beam, which operates at room temperature. Key to the new development is use of materials that can be laid down in single layers …

energySailbeam and fusion runway designer Jordin Kare has died

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Centauri Dreams that Jordin Kare has died at the age of 60 due to aortic heart valve failure. He was involved in developing laser propulsion concepts. As a physicist and aerospace engineer, Kare focused primarily on laser propulsion, both from …

futureTechnical progress towards interstellar laser beamed nanocraft

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Breakthrough Starshot brings the Silicon Valley approach to space travel, capitalizing on exponential advances in key areas of technology since the beginning of the 21st century. The nanocraft concept, combining light beamer, lightsail and StarChip, is by far the most …