Er: YAG laser

Er: YAG laser is a brand-new sort of laser in the 1980s. When the doping concentration is high, the laser can acquire an outcome of 2.94 μm. Since the laser has a wavelength of 2.94 um, right at the absorption top of the water, it can be strongly absorbed by water molecules. The mass portion of water in organic cells and also tissues is typically more than 70 percent. Therefore, a 2.94 μm laser is a suitable selection for laser biology applications.

Using this band of laser can additionally prevent the devastation of other molecular bonds in the cell and also does not have huge thermal damage like CO2 laser; In addition, the penetrating deepness of erbium laser in biological cells is really shallow, and its mechanical as well as thermal damages to the body is very small. As a result, the application as well as the development of Er: YAG laser have been paid much focus in medical circles in the house as well as abroad in the last few years.

Er: YAG crystal

The laser mechanism of Er: YAG is relatively complex however can understand under particular conditions due to numerous energy transfers 2.94 μm laser result. Its macro qualities are tiny one-way gain, high limit, as well as challenging to accomplish continual outcomes; Nonetheless, due to the high doping concentration, it is hard to create saturation to make sure that it can obtain the laser pulse with huge power.

Er: YAG crystal comes from the cubic crystal system, an appealing strong laser product in the mid-infrared band, which can output laser of three wavelengths at room temperature level: 1.64 μm, 1.78 μm and also 2.94 μm, amongst which 1.64 μm and 1.78 μm remain in the secure band of human eyes, 2.94 μm is in the hydroxyl absorption height and also can be highly absorbed by biological tissues, so it has a great application possibility in laser medicine, laser communication, laser range dimension, and so on the application.

Clinical

The output wavelength of Er: YAG laser is 2.94 μm, which is precisely consistent with the top of the water absorption range, and the absorption coefficient is 13000cm-1, which is the highest amongst existing medical lasers. It is a type of laser easily soaked up by water particles and also can accomplish a fantastic impact with tiny power.

The optical infiltration depth representing the absorption coefficient is 1μm; compared to various other clinical lasers, the penetration depth is very shallow. This advantage is matchless to various other wavelengths as well as can be utilized to perform precise cutting and soft cells excision surgical procedures. As a result, it is appropriate for accuracy in clinical areas such as ophthalmology and capillary.

Plastic

Er: YAG laser in cosmetic surgery, bone, and tooth cutting as well as various other applications have actually drawn in much focus.

On top of that, Er: YAG laser is a very risk-free and practical laser resource for clinical usage due to the fact that the damage to water-bearing cells is mechanical damage brought on by water dissipation, which does not leave melt marks, nor does it have the potential danger of gene mutation brought on by damage to cell DNA similar to the excimer laser.

In the last few years, the application of erbium-doped YAG laser in the medical area has actually been paid an increasing number of attention. With the maturity of Q-switching modern technology, the problem of Q-switching of Er: YAG laser has actually been overcome. As well as the modulated 2.94 μm Er: YAG laser, the pulse size is significantly shortened, the peak power is likewise increased. Which better minimizes the mechanical damage to the irradiated things surface, and the thermal damage is virtually no. The side of the pulse trauma factor is smooth, which is extremely appropriate for different accurate medical areas.

Oral

Among all types of wavelength lasers, Er: YAG laser in the mid-infrared band has a wavelength of 2940nm, which happens to be near the peak of the water absorption curve and also the second top of the hydroxyapatite absorption curve. It is simple to be taken in by water and also hydroxyapatite, and also particularly very easy to be taken in by water to create high power. As a result, it can act on soft and also hard cells with different water contents to create cutting, ablating as well as grinding effects and also kill all sorts of germs in the tissues at the same time. As a result, it is a multi-functional laser commonly used in different scientific subspecialties of the oral cavity.

In addition, Er: YAG laser has the shallowest tissue penetration deepness, just 2μm in soft tissue, 5μm in enamel, and also 7μm in dentin, which has the advantages of exact treatment as well as very little cells damages in scientific application. At the same time, the water cooling design makes the temperature surge brought on by Er: YAG laser irradiation of soft as well as tough cells surface no greater than 5 ℃, virtually no thermal damage, so the tissue reaction after therapy is minor, quick recovery, extremely suitable for dental minimally intrusive treatment.

Blood

The 2.94 μm laser emphasis communicates with water-saturated biological tissue. It amounts to instant heating of a finite volume in which the stress increases as well as material (such as blood) flows out of the cut without clotting, a fancy some operations. Yet it was this feature that brought about the growth of the laser blood sampler. The effect is good. The discomfort is smaller sized than in acupuncture blood collection. The injury location is smaller, the recovery is quick, no infection.