The **Er:YAG laser crystal** is a remarkable innovation in the field of laser technology, specifically engineered with 50% erbium doping in Yttrium Aluminum Garnet (YAG). This sophisticated crystal is pivotal in generating a 2940 nm laser, a wavelength that is uniquely effective in medical and dental applications. The Er:YAG crystal combines various output wavelengths with the superior thermal and optical properties of YAG, making it an exceptional choice for precision laser operations. Its ability to emit at 2.94 µm is particularly noteworthy, as this wavelength is the most readily absorbed by water and hydroxylapatite, positioning it as a highly efficient surface-cutting laser.

The unique emission wavelength of 2940 nm achieved through 50% erbium doping is strategically aligned with the water absorption peak. This characteristic allows the laser to be strongly absorbed by water molecules, making it an ideal tool in fields such as plastic surgery and dentistry. The Er:YAG laser's capability to target water-rich tissues with precision has led to its widespread use in various medical procedures. Its application extends to laser blood collection instruments, where the structure involves both sides of Er:YAG rods being coated and xenon lamp end-pumped, showcasing its versatile utility.

In the realm of dermatology and aesthetic treatments, the Er:YAG laser is celebrated for its effectiveness in improving various skin conditions and signs of aging. Its wavelength is particularly beneficial for addressing issues such as dyschromia, actinic photodamage, solar elastosis, acne and traumatic scarring, fine lines, mild to moderate rhytidosis, coarse skin texture, and skin laxity. The ability to deliver precise, controlled energy makes the Er:YAG laser a preferred choice for practitioners aiming to achieve optimal results with minimal invasiveness.