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Scientists at Yale University developed the first “Anti laser”

Scientists at Yale University developed the first “Anti laser”

“Anti laser” is a device that absorbs and counteracts a laser beam. It traps a laser beam with a hole and bounces it inside it until it is absorbed.Sounds like a science fiction movie, or The Pentagon invented new weapons, but in fact, it may be more applied in optical computing and radiation technology in the future, especially for the research and development to improve the next generation of computer running speed.

Conventional lasers use gallium arsenide or other “growth mediums” such as semiconductors to produce light waves of the same frequency and amplitude, and because of the same frequency and amplitude, these light waves form a focused beam.The “reverse laser” uses silicon wafers as a lossy medium”.When the two laser beam into the wafer including hole, to and fro, “ricochet” will offset each other, into heat.

The official name for this device is CPA (coherent perfect absorber).In theory, 99.999% of the light can be “killed”, however, Professor Douglas Stone, a physicist at Yale University, says the real success rate is about 99.4% because of the limitations of lasers and silicon itself.But Professor Stone says the upgraded version of the device will absorb almost all of the injected lasers.The current CPA is limited to the kinds of light that can be absorbed, such as not being able to absorb near infrared rays.But Professor Stone says that by changing “lossy media”, future CPA can absorb and neutralize all visible and infrared light.

But anti – Laser still can not stop the damage caused by laser weapons, because “anti – Laser” only transforms the laser energy into heat energy.Professor Stone says these energies dissipate in the form of heat.So if someone wants to burn you with a powerful laser, you can’t help it even if you have an anti – laser.

CPA can be used in the development of optical computers, because the next generation of computers is the development of optical components rather than electronic components.It can also be used in radio technology, especially in the field of electromagnetic radiation for medical treatment.

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