Laser technology brings new changes

Laser and ordinary light are essentially the same, they are both electromagnetic waves, and their propagation speed is 300,000 km / s. However, the generation and emission behavior of laser light are different from ordinary light. Laser light is a non-divergent strong light generated when a substance is excited by the same energy as its molecular natural oscillation frequency.

Laser technology involves many disciplines such as light, electricity, materials, and detection. Although it was born from high-end scientific research, it has long since faded out of mysterious colors and quietly "broken into" our lives.

I. Medical Field

Lasers are increasingly used in the beauty industry, such as removing freckles, age spots, tattoo removal, eyeliner washing, eyebrow washing, scar treatment, etc .; laser surgery does not require hospitalization, small surgical incisions, no bleeding during the operation, and light trauma; For the treatment of vascular skin diseases, it is highly accurate and safe without affecting surrounding neighboring tissues.

2、Laser communication

Laser communication refers to a communication method for laser transmission in atmospheric space. First, the information is converted into an electrical signal, which is then modulated by a light modulator onto a laser beam generated by a laser, which is then transmitted through an optical antenna. Atmospheric laser communication has a large capacity and good confidentiality, and is not affected by electromagnetic interference.

3、 laser measuring distance

Laser rangefinder is an instrument that uses laser to accurately measure the distance of a target (also called laser rangefinder). The laser range finder emits a very thin laser beam to the target when it is working. The photoelectric beam receives the laser beam reflected from the target. The timer measures the time from the laser beam to the reception and calculates the distance from the observer to the target.