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A blue laser emits electromagnetic radiation with a wavelength between 400 and 500 nanometers, which the human eye sees in the visible spectrum as blue or violet. [1] Blue lasers can be produced by: Lasers emitting wavelengths below 445 nm appear violet, but are nonetheless also called blue lasers.
In mid-to-late 2011, 405 nm blue-violet laser diode modules with an optical power of 250 mW, based on GaN violet laser diodes made for Blu-ray disc readers, had reached the market from Chinese sources for prices of about US$60 including delivery.
A directed-energy weapon ( DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include weapons that target personnel, missiles, vehicles, and optical devices. [1] [2]
The name refers to the blue laser (actually a violet laser) used to read the disc, which allows information to be stored at a greater density than is possible with the longer-wavelength red laser used for DVDs. The polycarbonate disc is 12 centimetres (4 + 3 ⁄ 4 inches) in diameter and 1.2 millimetres (1 ⁄ 16 inch) thick, the same size as ...
Blue-violet lasers are preferable as higher powered ones, they are more available than red, and cheaper – due to them being used in the Blu-ray industry. The lethal laser is fired at the mosquito and is able to kill it mid-flight, possibly by overheating it.
In November 2022, Nakamura co-founded Blue Laser Fusion, a commercial fusion company, with Hiroaki Ohta, a former president of Tokyo-based drone maker ACSL. In July 2023, Blue Laser Fusion raised $25 million from venture capital firm JAFCO Group and the Mirai Creation Fund, which is backed by Toyota Motor and other investors and managed by the ...
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