Traditional laser pointers use semiconductor materials to produce a focused beam
Said the physicist who invented it. It can be used to make photosensitive switches and optical computers. Introduction Anti-laser pointer can be used to make photosensitive switches and optical computers. Used in the field of radiology. "Science" magazine unveiled the mystery of anti-laser for the first time. But its principle was made public last summer. A research team led by Yale University physicist Douglas Stone published a report last summer. The anti-laser absorbs the laser beam and releases heat energy. Traditional lasers use semiconductor materials and other "gain media" to produce a focused beam. The anti-laser uses silicon as a "loss medium" to capture the laser beam. The light beams entering the anti-laser interfere with each other. Cancel each other and "absorb" into heat. Anti-laser ≠ anti-laser weapon and cannot be used to defend laser guns.
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The leading team used a piece of silicon wafer to make the first anti-laser "coherent perfect absorber". This piece of silicon, about 1 cm wide, acts as a "loss medium." In the experiment, the researchers directed two laser beams with specific frequencies to the anti-laser. The two beams "oscillate back and forth" in the anti-laser. Eventually they cancel each other out and turn into heat. Theoretically. The anti-laser can absorb 99.999% of the incident beam. However, due to experimental limitations. The "absorbance" of the "coherent perfect absorber" is 99.4%. It is because it absorbs the light beam. Anti-laser cannot be used as a "defense tool for high-power laser weapons. This is an instrument used to absorb laser beams. When someone shoots you with a laser gun. Use anti-laser to protect yourself. You will still be killed."
2021-01-23 03:59:23
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