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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. Blue lasers can be produced by: direct, inorganic diode semiconductor lasers based on quantum wells of gallium(III) nitride at 380-417nm or indium gallium nitride at 450 nm
A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.
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.
Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations. Moderate and high-power lasers are potentially hazardous because they can burn the retina , or even the skin.
- Double-slit experiment - Wikipediawikipedia.org
This concept is similar to the fictional kyber crystals used in the Star Wars universe to power up laser weapons from smaller scale weapons (e.g. blasters, lightsabers) to super-scale intensity in the case of the Death Star.
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