Advantages and disadvantages of YAG laser

YAG laser is a solid laser based upon a yttrium aluminium garnet. The chemical formula of yttrium aluminium garnet is Y3Al5O15. As with various other solid lasers, the fundamental components of the YAG laser are the laser functioning product as well as the pump resource unified resonance cavity.

Yet because of the activation of doping ions in the crystal, different sorts of pump sources are used, and the pump, differently adopted by the dental caries structure, is various. The other useful structure of the tool, the YAG laser, can be divided right into a variety of, for example, according to the output waveform, it can be divided into constant wave regularity YAG laser, YAG laser and also pulse laser, and so on; According to the working wavelength, it can be split into 1.06 μmYAG laser, frequency-doubled YAG laser, Raman regularity shift YAG laser and also tunable YAG laser, etc.

Various doping can be divided into Nd: YAG laser, doped Ho, Tm, Er and so forth YAG laser; According to the crystal form, it can be separated into a bar and also strip YAG laser. The different result power can be split into high power and small power YAG laser.

Here are some examples of YAG crystals

Er: YAG crystal

Er: YAG crystal belongs to the cubic crystal system, a promising solid laser product in the mid-infrared band, which can output laser of three wavelengths at room temperature: 1.64 μm, 1.78 μm and also 2.94 μm, among which 1.64 μm and also 1.78 μm are in the risk-free band of human eyes, 2.94 μm is in the hydroxyl absorption optimal as well as can be highly soaked up by biological cells, so it has an excellent application possibility in lasers medicine, laser interaction, laser distance measurement, and so on.

Nd: YAG crystal

Nd: YAG is just one of the laser crystals with outstanding thorough performance as well as vital applications. Due to its premium standard homes, it is commonly made used in commercial, medical, military and also clinical research areas.

Nd: YAG crystal Advantages:

• High optical quality, low loss
• High gain, low threshold, high performance
• Appropriate for high typical power solid state laser
• High mechanical toughness, outstanding thermal conductivity and also thermal shock resistance
• Appropriate for all laser functioning modes (continuous, pulse, Q button, setting securing, the frequency increasing, etc).

Tm: YAG Crystal

Tm: YAG crystal, thulium-doped yttrium aluminium garnet crystal. The self-quenching device of H4 and also F4 degrees of Tm: YAG crystals can produce two-photon excitation in the upper degree, potentially offering a reliable method for the lasers to get high quantum effectiveness.

Tm: YAG crystals are extensively utilized in LiDAR and various other climatic discovery fields as a result of their operating wavelength of 2013nm.

Tm: YAG has the following features:

• The fluorescence lifetime of Tm is 9.2ms@6 %.
• A Tm: YAG crystal is twice as long as a Tm: YAP crystal.
• Tm: YAG crystals give off a slightly lower cross-sectional area than Tm: YAP crystals.
• The optimal absorption band is 785nm.
• Better for the pump of the semiconductor diode.

Advantages

YAG laser beam quality is good as well as has the advantages of high performance, inexpensive, security, safety, accuracy, as well as high integrity. A straight port is tiny in details applications, making use of YAG lasers equipment and handling rate, high efficiency, and far better economic benefit. The cut surface is smooth and also can acquire a bigger depth-to-diameter ratio, as well as the warm contortion, deep and wide, can be hard, brittle, and also soft on various products such as handling.

There is no tool wear or replacement. No mechanical ends up being simple to automate. High processing pump effectiveness can be attained under unique problems, as much as around 20%. With the performance renovation, the laser medium's heat tons reduce. For this reason, it considerably enhances the top quality of the light beam's long life, high integrity, tiny dimension, lightweight, and also suitable for miniaturization applications.

Compared with other lasers, the YAG laser can work in 2 methods: pulse and also continual. Its pulse output can be gotten by Q-switching and mod-locking technology so that its handling variety is larger than that of a CO2 laser. The output wavelength of the YAG laser is 1.06 um, which is just one order of magnitude smaller than the wavelength of the carbon dioxide laser 10.06, so it has high combining performance with steel and also good processing efficiency. The most vital is that the YAG laser can be paired with fibre. With the help of the time and power departments, a multiplexing system can quickly send a laser beam of light to several stations or long-distance terminals, which is convenient for laser handling to accomplish flexibility.

Application

YAG laser is suitable for laser cutting, welding, as well as boring of steel materials: such as carbon steel, stainless steel, alloy steel, aluminium and alloy, copper and also an alloy, titanium as well as alloy, nickel-molybdenum alloy and also other materials. Commonly made use of in air travel, aerospace, tools, ships, petrochemical, clinical, instrumentation, microelectronics, auto and also various other industries, it improves processing top quality as well as working efficiency. In addition, the YAG lasers can additionally offer an accurate and fast study method for a scientific research study.

READ MORE