Why is UV Laser diode module so important in industry and medical

The difference between laser and ordinary light:

While natural light is a mixture of many different wavelengths and phases of light, laser light is light with a single wavelength phase. Wavelength is the length between crests and crests or troughs and troughs. Since light has a specific color for each wavelength, a single wavelength of laser light becomes a single color. This is the secret to the bright colors of the laser. However, not all lasers are colored. With lasers of wavelengths other than visible light, shapes and colors cannot be seen.

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Phase refers to the displacement of the wave. In the phase, the crests and crests, the troughs and the troughs of the waves coincide, that is, they can be considered overlapping. For this reason, lasers are arguably a "clean wave" of light, which polishes very well compared to natural light. And the laser doesn't travel no matter how far it travels. Natural light diffuses in all directions, while laser light is emitted in a straight line. Lasers with this property are of interest in many fields, and their uses have expanded in the blink of an eye.

In addition to the original characteristics of light, using its powerful energy, from its birth to the fields of industry, medicine, nuclear fusion, measurement, information storage, optical communication, etc., it took only 35 years to get dazzling research. and development, its uses are well known. expand.

In industry, lasers are used to cut iron or metal or to engrave drawings or text on surfaces.

Due to the precisely defined monochromatic wavelengths, lasers are used in various fields of science, especially spectroscopy. In the case of pulsed lasers, it is used to observe phenomena that occur in a short period of time using short pulse widths.

The applications of lasers in the medical field are also dazzling.

The well-known laser scalpel is a laser beam focused by a lens, irradiated to a single point, and instantly vaporized with powerful energy to form an incision.

Tissue at the incision site instantly reaches 1500°C or higher and evaporates due to heat. When the output drops below 100°C, the tissue coagulates, and the amount of bleeding is less than that of traditional scalpels, which is suitable for surgery in areas with more bleeding.

In the medical field, the thermal effect represented by the laser scalpel is mainly used, but in recent years, it will be greatly advanced to the next step.

This is a cell-killing effect obtained through a photochemical reaction, which holds great promise for cancer therapy.

HpD in the body Only cancer cells react in a condition called a pigment The mechanism of why only cancer cells react has not been fully elucidated, but when this reaction occurs, irradiating a laser that is easily absorbed by this pigment prevents cancer. Cells grow and produce substances that have a killing effect, thereby curing cancer.

More recently, methods have been devised to stop toothaches or make the treatment painless by simply shining a laser on the teeth.

Another interesting finding is that when a certain laser is irradiated on it, the reactivity of the pulp undergoes secondary calcification, which has the potential to significantly change the treatment of dental caries in the future.

In the case of laser painless treatment, why patients feel no pain is still unknown.

In terms of lasers, only thermal effects are currently emphasized, but applications in other fields will be actively researched and developed in the future.

Lasers are beginning to be used for examinations other than therapeutic purposes, and innovative applications are also expected in this area.

Another area of ​​interest is laser metrology.

In the past, maps were created by measuring distances based on a pre-known angle between a line connecting two points and the point to be measured.

In the laser measurement method, a reflector is placed at the point being measured and it is trying to find the distance by returning the time. This approach is useful when creating maps that require precision.

Industrial, medical, telecommunications

Among the cutting-edge technologies that every country is focusing on today as a high-tech industry, the expectations for optical technology are very high.

Lasers and optical fibers are also the main force of optical communication, and finally began to enter the practical stage.

It transmits information to distant places through optical signals instead of electrical signals, and the amount of information that can be transmitted through it is much larger and faster than traditional methods. In just a few decades of development, the application range of lasers has been dazzling. As a result, the research and development of lasers with excellent practicability has added an epoch-making landmark to the history of science in the fields of industry, medical treatment, measurement, and communication. Page